2011-2015 Chevrolet GMC: Exhaust Fluid Low Message

In this video I preform a DEF Level reset on this 2011 GMC. This is a fairly common issue on these trucks and a pretty easy fix. -Enjoy!
Search for GM PIP4864P to read. Applies to:
2010 - 2015 Chevrolet Express
2010 - 2015 GMC Savana
2011 - 2015 Chevrolet Silverado
2011 - 2015 GMC Sierra
Equipped with 6.6L Diesel Engine RPO codes LML and LGH
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Disclaimer:
Due to factors beyond the control of South Main Auto Repair, it cannot guarantee against unauthorized modifications of this information, or improper use of this information. South Main Auto Repair assumes no liability for property damage or injury incurred as a result of any of the information contained in this video. South Main Auto Repair recommends safe practices when working with power tools, automotive lifts, lifting tools, jack stands, electrical equipment, blunt instruments, chemicals, lubricants, or any other tools or equipment seen or implied in this video. Due to factors beyond the control of South Main Auto Repair, no information contained in this video shall create any express or implied warranty or guarantee of any particular result. Any injury, damage or loss that may result from improper use of these tools, equipment, or the information contained

[@chrisfreemesser5707]

When I saw the thumbnail for "exhaust fluid low" I thought this was a late April Fools joke, lol.

[@Billy_Darley]

Nope. Newer diesel engines really do run on piss.

[@forresttucker168]

Me too

[@vivillager]

Thank the EPA for that. Also 2007+ diesels also have exhaust filters to filter out any solid particulates. I don't know when, but in America, gasoline engines will soon be equipped with exhaust filters similar to the diesels. They're already in Europe.

[@researchandbuild1751]

Sadly no, the EPA strikes again

[@Anonymous-it5jw]

Research and Build I thought the Tr(I)ump(h) Administration had abolished the EPA?

[@seanjnl1]

Wow. When I saw the title of this video, I thought he was joking.

[@HighestRank]

seanjnl1 right up there with muffler bearings and that other mystic fluid.

[@yellowbusguy]

My 2017 Cummins powered school bus is in the shop getting a fault fixed in the Selective Catalytist Reduction system, (SCR). It only has 21000 mile on it. Stupidly complex emissions systems. EGR, SCR, and DPF. What could go wrong?

[@HighestRank]

yellowbusguy how about degenerative catalyst substrate? Fit the bill for ‘what’?

[@wallingj68]

So this Chevy owner had a DEF Jam?

[@pgtmr2713]

I GET IT!

[@GhettoWagon]

They had problems with the pee Flow in the Mornin.

[@mrkttrdr2919]

didnt know this was a thing, thought u were putting out a delayed april fools joke, sounded like a muffler bearing fix!

[@Freedomquest08]

I am not so sure there is a single big three diesel pickup over 5 years old left in Idaho that hasn't had the DEF system hacked and removed.

[@0778drz110]

Probably wont pass inspection in NY for removing emissions equipment though.

[@Freedomquest08]

@@0778drz110 I know they wouldn't pass. Same for several western states, California being the most stringent about emission delete rigs. If I'm not mistaken, all of the DEF emissions garbage is EPA mandated. Pretty costly to have it all put back in someday when laws become more stringent and circumstances force them to.

[@boostedmaniac]

Freedomquest08 we just need VW to make a diesel truck 😜

[@HighestRank]

Freedomquest08 if they last that long without DEF equipment anyway, it’ll be a fashion statement: sell the truck for a compliant one when needed and turn a profit or break even.

[@stonestreaker]

Exhaust fluid? Surely regulated by a piss-take valve?

[@HighestRank]

stonestreaker more blinker fluid, Thomas?

[@helltanner3722]

its a urea solution so yes

[@horsey8516]

Blinker fluid and muffler bearing mandates are soon to follow. What a world we live in today. :)

[@thecritic3710]

just had my muffler bearings recapped....rotated the stamyngas also.

[@jayusher576]

@Lako it is..just more bull💩 emissions trash

[@weldingjunkie]

Jim Alley he doesn’t drive a diesel so he doesn’t care lol

[@thecritic3710]

al gore?! lol! @@Spelter

[@danhealy7341]

Do Europeans have nothing better to do than criticize Americans? If you think we are stupid do not then follow us so closely.

[@sprocket226]

Nice short SMA video to watch while I'm on my lunch break. Thanks Eric!

[@15743_Hertz]

Diesel Exhaust Fluid (DEF) is 37% urea. In a pinch couldn't you just...?

[@stephanieluigon5192]

Yes

[@HighestRank]

Use a hundred bottles of Murine eye drops, of course you could.

[@HighestRank]

Stephanie Luigon we know you were thinking of Chamber Lye, but it’s not pure after about a month of sitting in an open pot.

[@stanpatterson5033]

I've poured clean water in there just to raise the level. I've done it when the tank level was above half though, and run it down again to about half, then filled up with fuel and def. It's pretty flexible. Mind you, I'm talking about a heavy duty truck, Freighshaker, K-whopper. I've never messed around with a pickup-sized system. Water is the carrier fluid which suspends the urea. The water merely gets evaporated (as does the urea). The urea does its magic to achieve the lowered NOx levels, and the water vapor just blows out the pipe and back to the environment. I don't recommend anyone try filling half the capacity of your DEF system with water, but pouring a gallon into a system that holds 10-15 gallons shouldn't hurt. Thin it out too much and you'll be getting messages and de-rates.

[@Garth2011]

There's a sensor inside the tank that will read urea levels so if it's all water, this message will also appear on the dash.

[@MrFakit]

Just another reason not to get rid of my '93 Cummins 5.9 lol

[@NoName-tz5ji]

Definitely

[@fredkuhn165]

We do the same with our fleet of semis. The 1998 kenworth is way more reliable than a brand new one, plus we can work on it. We can rebuild it for 10 grand Vs 130 grand and getting towed every week with a new one

[@Jesse_Caulk]

Bad part is that you can tow more with a recent half ton than your old Cummins. Not knocking it at all, but if you need big capacity the old stuff just doesn't cut it.

[@NoName-tz5ji]

Jesse Caulk oh really? You know the new ones just climb the hill faster and eat more fuel and cost more to buy,maintain and repair.My 99 regularly grossed 38k with minor suspension modifications. Keep your new breed unreliable expensive carpeted preppie junk.

[@robertsides5808]

one of the many reasons I keep my 1988 f-250 7.3 idi easy to work on no scan tool needed

[@pyralux01]

"If I can do it, you can do it"......not without a quarter million in tools and computers I can't....

[@blitz8619]

Better than timmys "if i cant fix it, no one can." Or "Can you dig it" or "yeaaaa boy".

[@kens97sto171]

I think he mentioned that any standard scan tool could also do this. You can pick one of those up pretty cheap, you can also buy an OBD2 Bluetooth connector and use your smartphone an app called torque on Android at least I'm sure there is an equivalent app for iOS

[@blitz8619]

@Gabe's Garage the bad thing is Timmy a blocked my comments because I suggested he smoke the EVAP first before disconnecting hoses because disconnecting I reconnect the hoses cud fix leaks The worst part is after he disconnected and reconnected hoses he smokes it He'll block you if you don't agree with them or kiss his ass

[@ahill007ny]

@@kens97sto171 I believe it would have to have bidirectional controls, Launch Diagun, Autel MS906, OTC Encore/Evolve, Etc...

[@kens97sto171]

@@ahill007ny Some apps that use Bluetooth dongles do have that ability..

[@SmittySmithsonite]

Wonder if GM put the "stupid" in the computer on that to generate a little extra revenue for themselves? Sure looks that way! DEF ... of all the emission bandaids, that one takes the cake! Buy an '09, and the system is fixed! 😁

[@SmittySmithsonite]

@Charles Ball - Yep, that'll work too. 👍

[@bigman55434]

Should have kept my 2006 LBZ. Last year before all this crap started. Best truck I ever had.

[@HighestRank]

bigman55434 yep 2006 LBZ had your deleted kit installed standard equipment from LBZ themselves.

[@bigman55434]

@@HighestRank Plus on the LBZ, you could run a tuner on it and then flash it back to stock for warranty work, and the dealer would never know. After that, they started putting serial numbers on each flash, and kept a record of them. I guess too many guys were cranking up the boost a bit much and breaking parts, with GM paying the warranty cost.

[@dylankeen2203]

The DEF tank on the LGH and LML Duramax is a 5 gal tank. To complete a regen of the DPF it requires 2 gal of def. the level sensor will register full with only 2 gal in the tank. even though it is truly less than half full. So you really never know that its full until it over flows. Also is does not use a conventional level float. the DEF would eat it away. it uses the Def as a conductor to complete a circuit, giving you the level of the tank. FUN STUFF.

[@63256325N]

What's the reason it doesn't reset after a fill up? You mentioned service bulletin Thanks and thanks for the video.

[@blockbertus]

Imagine having to do that for the normal gas as well... It is ridiculous that a scantool is required. I mean, the level indicator already figured out that it is at 100%....

[@HighestRank]

blocki it probably wouldn’t de rate unless the volumetric calculation didn’t show any abatements at 99%, a sure sign of a bypassed hack.

[@SK-qt1rm]

Update: Just replaced DEF HEATER because low warning kept popping up. It would read correctly on the laptop but still give warning. Dealer and other shop quoted $1400+. Did self for $350. Only problem was rusted bolts on tank mount. Had friend extract. No problems so far. Old post: Appreciate your vid. Had this problem last year, looked up service bulletin, had work performed. BUT!!!!!!! it’s back again. Reset in July, now it’s March. Traveled about 5k+ miles. Got the 1k warning, filled 2.5g about 200m later. Next day, LOW. Filled 2g to 100% and am getting it reset, again. BUT WHY???? Why count off?

[@orville58]

Awesome thank you for sharing your knowledge with regular people 🤓

[@smokeskull]

Too much exhaust fluid can seize the muffler bearings

[@berczigabor]

But only if you don't top up your blinker fluid regularly

[@crimsonixi]

And check the spark plug gaps

[@HighestRank]

Just one brake check too many can seize the rear strut bolts in a Honda Civic.

[@dennisoconnor2563]

Looking forward to getting South Main Auto t-shirt swag! I will wear it around my shop with honor!

[@HighestRank]

Dennis O'Connor okay you might want to begin by, you know, putting up some earnest doh-Rey-mi

[@f.k.burnham8491]

I am thankful my '81 T925 A M General 6X6 does not have such nonsense. Gotta love Mil. Surp.

[@Eremon1]

Give me an analogue diesel any day. Everybody can keep their computerized nonsense!

[@shimes424]

GFY we gotta share the air NO2 is not nonsense

[@shimes424]

Back in the day, people complained about lead being taken out of gasoline. Sure, it meant engines needed to be machined to tighter tolerances, better materials used for the moving parts, and substitutes for tetraethyl lead. but should we switch back to leaded gasoline? Lotta money sittin on the table... I hope you see where I'm going with this. Ahh, f it. As long as it pisses off them libtards! Amirite?!

[@dukeman7595]

Damn right, screw the computer bullshit. I'm still looking for a good old pkup. that can be restored. I'm sick of this crap.

[@bairfamilyfarm1336]

@@shimes424 I thought NO2 wasn't the problem with diesels, rather the soot was the issue.

[@shimes424]

@@bairfamilyfarm1336 at higher combustion temperatures, nitrogen from the tailpipe bonds with the oxygen in the atmosphere, creating NO2 (nitrous oxide) which is a gas with near perfect mass which allows it to hang around in our atmosphere meters above the ground. AKA "smog"

[@Cragified]

Shame this wasn't timed with April 1st :)

[@lunchboxproductions1183]

Can you imagine being a time traveler from the 90s that hops in a new truck and sees that the exhaust fluid level is low?! EXHAUST FLUID!!

[@jeremyperkins7559]

Then your customer comes back few days later with quality def warning and restricted mph and you keep going down the book/codes until successful regen....lost my truck for almost 3 weeks going through the process. tank heater, nox, cat, 9th injector, and finally the actual DEF filter. If the 10yr/120k warranty was not extended I would be deleting it all. Customers shouldnt get hammered by these extra systems on vehicles.

[@scowell]

Yeah, I like not smelling my diesel exhaust... had enough of that in my youth. DEF for the win!

[@wills.5762]

If youre okay with smelling piss instead, then yeah I guess so

[@scowell]

@@wills.5762 It smells like nothin'... best smell there is. No smoke, no soot, no stink.

[@spelunkerd]

Any way to do this without a scan tool having bidirectional control? Would it reset by removing the battery neg pole?

[@SouthMainAuto]

No sir :(

[@kwils6685]

I think people should be able to buy software for our cars from the manufacturer so we can work on our own cars if we choose. I wouldn't need software for every type of car on the planet just mine so it shouldn't have to cost a fortune.

[@jfinnall]

@@kwils6685 - Exactly, like the scan tool functions should be built-in to the vehicle! Nothing special required. They offer you 5 year financing on the vehicle and then 3 year financing on the scan tool for it.

[@badandyg]

Are you sure you checked the muffler bearings too?

[@HighestRank]

Andrew Gengler what’s the code for those? Didn’t know any scan tool had PIDs for MBs.

[@arthurlucas8271]

If you have a duramax, I had the entire pump sensor init replaced by GM at no charge. I was sure I would be on the hook. I have a 2012 with 74,000 mi. I was very suprised they extended the warranty to an 8 year old truck. Thanks GM.

[@MySparkle888]

The proper fix would be to do a def delete.

[@29auto30]

Not in the peoples republic of NY.

[@travisd7992]

Unless you want to fail your inspection. Most modern diesel trucks are required to have them because of epa regulations unless your state has no inspection at all on vehicles then you can do a def delete but then you would probably have to reprogram the computer

[@gokartbuyer]

Scott H Still smog in LA

[@b52tricopter]

@@shimes424 Calm yourself. You're commenting on a guy's channel that heats his house with coal.

[@weldingjunkie]

Yeah right in RI they would fail me for a delete on my 328D then suspend my registration I need to move to where you live. Or Mexico

[@dpomeroy1]

2012 LML...received warning to service DEF although tank was full. Dealership replaced tank and associated electronics under GMC recal, no problems since. Memory serving correct it was a 10yr warranty on the DEF tank and components. It sucked driving home in limp mode...waving people by me with 4 ways on ;-(

[@PrimoLandscaping]

Glad I have a pre emission Duramax in our dump truck. Any chance I can bring it by your shop for some work Mr O? I know how much you like diesels :-)

[@u1richh]

This is why DEF deletes are popular.

[@kellykonoske91]

Diesel truck sales have not slowed out here in the West buddy! I guess alot of people are willing to put up with it. I'll keep my 22 yr old Ford thanks

[@HighestRank]

If I’m not mistaken, Ford was the first to market with DEF. You might want to check the factory bulletins again for post-sale added/non-optional free ‘extras’ installed during the dealer maintenance intervals for the location of your fill tube, then have it deleted.

[@Paul1958R]

Eric, Im not a pickup truck guy, Im not a diesel guy, Im not a GMC/GM guy, and Im not a DEF guy. But I still love all your videos! SMA#1 God bless Paul

[@HighestRank]

Paul1958R if you’re not a T-shirt guy, tho.

[@sabergermd]

The Tech 2 screen is not conducive to good video quality. Why do the OEM tools come with displays reminiscent of old computer terminals?

[@picoboo5048]

Because the tech 2 was designed in the early 90s.

[@sabergermd]

@@picoboo5048 Well there you go!

[@stoneblue1795]

I don't often get that on the Prius..... except when towing the 5th wheel.

[@davidnielson5252]

BAHAHAHAHAHAHAHA

[@Hellpoolhall]

LOL @ "ready to roll coal".... that would require a DPF delete.

[@HighestRank]

JJ Hupf just add mercury/Hg to the tank for the authentic coal output.

[@weldingjunkie]

It’s funny so many people thought exhaust fluid was a joke. Well the jokes on us as diesel owners having to refill def fluid every oil change

[@HighestRank]

Welding Junkie it is a joke, at almost 30% piss.

[@weldingjunkie]

Yup just pure crap and not needed at all. My bmw won’t at all run once I get down so low it locks out. Dumb

[@dcsmitty50]

New subscriber here and I must say you have one of the best repair channels by far. I've been binge watching your channel and you sir are the real deal. Excellent work and diagnostics!

[@mskudlarek]

I picked up a tech2 scan tool from the pawn shop the other day for $150. Full kit. Buddy brought his 2016 Hd2500 over today with this issue. autel wouldn’t touch it - used your vid and my tech2 and it worked perfectly. Thank you!

[@bigmurph1447]

Easy way to fix it is buy efi live and get rid of that junk problem solved

[@tatersalad6872]

wow! what an opportunity for a dealership to screw over the unsuspecting on something like that!

[@phprofYT]

Well, just another GM bug. Get the warning, refill the tank, but GM software engineers can't reset their own system.

[@tiredoldmechanic1791]

At least they aren't like the Ford diesels where you have to spend $4,000 to replace the high pressure pump every 60,000 miles.

[@jamesbaechle8180]

have a 2012 GMC 3500HD w/6.6. it takes 40 run cycles to clear that message on it own.

[@tinytim9453]

I'm confused about the gear selector display PRNDM, blank space, 1 ??

[@JackdeDuCoeur]

If you told someone their exhaust fluid was low 30 years ago, they'd just smile and wait for you to try to sell them a muffler bearing or a framis.

[@McShiree03]

What scanner did you use for to clear the tank low level ?? Bosch tech 2 but what model ?

[@dougchambliss3836]

As always very informative Thanks.

[@CoolAirVw]

Thumbs up for this video. Thumbs down for Chevrolet forcing truck owners to have it reset, rather than just filling it.

[@hugglescake]

I really need to change my blinker and horn fluids.

[@williamsquires3070]

You forgot the tire oil. 😆

[@HighestRank]

William Squires reup card’s available at any Stuckey’s truck stop.

[@TimDorton]

Hey Eric, great job making those GM guys look look silly. I was the Smog Tech for 6 family owned dealerships, just me. I go by Smogdawg. 20 yrs L1. 30 yrs in smog. Def is part of the federal emissions warranty 7/70,000. I had to retire due to Parkinson ( too much CO2). You work just as I did. I worked at Nissan for the last 10 yrs. BTW, do you know what def fluid is made from?

[@fastrthanuz]

I have a 2011, same issue, the tank is full,yet the message says empty, speed restricted! Mechanic verified sensors were operating correctly, did the reset as you did. Went for a test drive, message came back! The tank heater was replaced because of a code something like " reductant circuit high". 2 separate issues. Replacing the tank fixed that, but still left with the " DEF tank empty, speed restricted to 55mph" please help

[@munboy216]

What do you charge for that? Like your time is money and you should always charge your diag fee, but on the other hand I wouldn't feel good charging 1 hr for 4 min with a scan tool and I didn't even pull it in to a bay

[@arthurfricchione8119]

Good info video Eric O. Have a pleasant day looking forward to the next one ❤️

[@supervitz7178]

Surprised to see so many Americans unfamiliar with this, we call it AdBlue fluid in the UK, you can pump it at the "gas station" lol.

[@kellykonoske91]

Gonna keep my 96 Ford 7.3 thanks were good to go!

[@halleffect1]

Blinker Fluid reset in ridiculous expensive truck with ridiculous expensive scan tool, continue rusting away.

[@anthonyramirez6151]

I love the info you provide! Question where can I find a Bosch tech 2 scan tool. I can’t find a Bosch scanner labeled “tech 2.” Sorry if that’s a dumb question.

[@charliemagoo7943]

The level should reset itself by driving above 45mph for 5 miles. I have done the resets to many of them then they are right back in. Same message. The sensors are in an alkaline environment and will give up the ghost if the temp sensor or heater doesnt give up first. Its metal inside ammonia. It will fail.

[@unclemarksdiyauto]

Glad I don’t own a diesel. DEF has been a problem since the beginning. On the flip side, Particulate filters on the way for gasoline vehicles soon. Sure to be another pain in the butt. Guess are everyone should go electric? Thanks again Eric!

[@johnbranca611]

I have a 2014 gmc sierra 3500 hd duramax.... I've read that the tech 2 doesn't work on. Model year?. Would you happen to know if that's true?

[@christophersustayta5974]

Good evening I have an engine light on my 2012 diesel durimax and my def fuel level shoes 26% on a full tank of def fuel what’s your opinion is it the same procedure? Thank you.

[@Backyardmech1]

DEF problems. Anybody else want to say another government subsidized problem? Only you the customer are paying for it by the tank full?

[@BillCarrIpswich]

Not one, not two, but THREE DEF level sensors, on a US built car? Is that for redundancy or are they just trying to make trouble?

[@BOBHANNA01]

You'd think they would switch vendors or demand a revised pump heater, level sensor combo, these all seem to do this and that thanks in such a bad place, just asking to be punctured.

[@HighestRank]

david price Then your new truck gets the piss poked out of it.

[@daytona1445]

Emissions testing and Def are the two main reasons I got away and stayed away from diesel years ago.

[@joshpesto4608]

Fords are the same way run them too low and they require a reset just like this

[@adamtrombino106]

Thx Dr. O my friend has a 14 with the warning lite still on after he topped off the tank. Now to see if my scanner will reset the monitor.. I've never looked for it before in the menus, so I guess I'll find out!

[@fascistpedant758]

Which scanner do you have? Can you report back here once you've tried it?

[@raydornbush]

Can't believe you want to drive around the newer diesels and have to deal with all the emissions crap personally... I'll be driving my older diesel for life... no question.

[@GrandPrix46]

LB7 owner here, just watching the struggles of these guys with emissions equipment for the lulz.

[@HighestRank]

Jeff Smith cleanest lulz in town, rest assured.

[@sakitlikod1]

Youre so good at your work ,you should be a master mechanic instructor

[@jackgreen412]

What a bunch of crap to spend the money on an expensive truck and have little stuff like that to be an aggravation. Makes no sense. OK, I'm old and hard headed.

[@jonarmedpiandsecurityoffic9051]

Suggest to the customer that an EGR/DPF delete is in their best interest, forcing the engine to suck it's own exhaust is the most retarded idea anyone has ever thought of

[@JasonHalversonjaydog]

when i saw 'exhaust fluid" i thought you were joking, maybe it was the same as blinker fluuid! though i wish you would've explained what exhaust fluid is

[@frankogden2317]

I continued to get a message with a 100 mile countdown on message center to add def when tank is full. Doesn’t make sense

[@researchandbuild1751]

So now not only does this guy have to buy DEF fluid , he has to pay a mechanic to troubleshoot problems with it

[@farmark457]

So it won’t actually Derate? Just a glitch the computer would ignore? Thx

[@bigman55434]

Oh yes, it will derate, after a certain number of ignition cycles and distance. I had this crap happen at the start of a 275 mile trip on my 2011 Duramax. DEF tank was full. I was down to the last warning that said I would be speed limited on the next restart. The truck didn't get shut off until I got home. Next restart, limp mode to the dealer. Traded that POS in for a gasser. All this emissions crap on diesels is BS.

[@stephenlutz123]

Will the truck actually go into limp home mode, or is this a spurious message the driver can ignore?

[@timgraham7851]

This crap is why I won't buy a new diesel.

[@agger838]

New diesels r great with these unnecessary parts removed

[@rjhornsby]

Just curious, why would a low/no DEF condition impose a vehicle speed restriction / limp mode(?) such that the owner would end up stranded? Is there a mechanical reason or is it just an emissions law?

[@superjoe83]

It is usually a speed restriction, 5 or 10 mph, they do this so you don't just keep driving. Yes it is because of emissions, without DEF the truck may put out too much NOX emissions

[@davidlangdon9956]

Because the fucking morons in Congress think they know more.

[@donnierobertson3088]

Great job again like always A+

[@mhking136]

the tank-heater video was the first sma video I ever saw, pretty glad mine failed and I found the channel. learned a lot over the past x-amount of months watching you, keep up the the great work 💪🏼🔧🔨🇺🇸

[@HighestRank]

Mike King A hot motor needs a heater for the pee bottle. Classic.

[@timramich]

One question. What industry is out there that has urea as a waste product? I'd be willing to bet there is one, and that they lobbied for this to be mandated. Same as with the phosphate mining industry and how "fluoride" is now everywhere.

[@doccjohnson]

What happens is that bullshit def fluid has an expiration date and when goes out of date then truck shuts down. The gayest system ever invented. It cost me alot of cash to fix. So i installed def delete kit. And now no problems

[@scottm7878]

just air pollution to the air we all need !

[@GoatzombieBubba]

Should of left the DEF systems in tractor trailer rigs...

[@brucel.6078]

Exhaust fluid?!?!?!! I figured this was going to be a late April Fool's video!! Lol. Tf is exhaust fluid?!?! Nice job!

[@HighestRank]

Happy ‘late’ April’s-a-Fool day.

[@wills.5762]

The joke aint over yet. Exhaust fluid is basically a mixture of piss and water thats meant to make your diesel's exhaust cleaner.

[@BY504A]

That GM would use such a piss poor system like that is shocking.

[@j.cooper2246]

Just 1 more way gm gets u to take it in and have this done..$$$$...my buddys 97 ford dosent have this problem...lol....yes simle repair. But average person dosent have a $2000 scan tool to reset this feature .so they take it somewhere for repair and bamn!!!!.$100...()..poor engineering. Simple reset button in cab..or upgrade software fix 2 owners for free. Damn they dont build them 2 last or so u can fixem yourself..dont think my $100 reader will do this .. Don't get me wrong if a technician has to work on your vehicle they should be paid for their time period ...gm's revolving door ...

[@pyro323]

People are killin it with the jokes in the comment section. They alredy stole all my good ones....wait I got one, don't let that exhaust fluid get too low otherwise you'll spin your muffler bearings!

[@vollickplaysgames]

P R N D ....M ? whats the m on the gear select stand for , ive never seen it before.

[@damondhorner1602]

Can you do a manual regen on these?

[@mikeberry304]

Diagnostic equipment must be really cheap and good availability in the US , here in the UK, stuff costs a packet , dealers charge £80-150 for a diagnostic check , a proper tech 2 scanner costs about £2500 , snap on scanner average £3000 plus £800 per year updates , us small garages charge about £35 for a scan and about £35 per hour to repair , Joe public thinks we are all loaded , what they don't see is all the bills we have to pay before we walk out of our front doors at home , my costs are about £500 per week , what's it like in the US ?

[@wmichaels362]

He's low on urea !??? OMG. He should just p into the tank. LOL Diesel exhaust fluid (DEF) is an aqueous urea solution made with 32.5% urea and 67.5% deionized water.

[@roscoesomeone9764]

For the DEF haters, I remember being at the Los Angeles airport back in the early 1970's it was afternoon and you could not see the sun due to the pollution. We've added 100 million more to the country since then. We've all seen the pollution in China. DEF is one of the ways to deal with an air quality problem. More people on the planet means more rules if we expect a decent quality of life.

[@stephanieluigon5192]

That simply sounds like another excellent reason not to visit Los Angeles. I don't live in Los Angeles, and I can see the sun just fine, unless it is cloudy. Then I can't see the sun. But, alas, with the threat of climate change so real, perhaps it would be better if we did not see the sun so often. Additionally, since diesel pickup trucks were not really all that common in the 1970's, I don't see where making them more complex in the 21st Century solves the problem you reference. Still, those guys in Washington, DC are really smart, and I am certain they have thought of all this. They did a great job of making 50 cent light bulbs into 3 dollar light bulbs, and toilets you used to flush once into toilets you have to flush twice so we can "save" water. Excuse me, I have to go start my 2 cycle chain saw and cut some firewood for my wood stove. The wood stove supplements my oil fired furnace (no DEF required). My gas pickup (no DEF required) is warming up so I don't freeze on the way to the lot where I cut firewood. Boy, I hope those 100 million extra folks are driving electric cars.

[@taylorl5794]

Is there a way to clear this message without a fancy tool like yours?

[@rickgaine3476]

How many different scan tools do you own, and how much money do you have invested in all of them? A necessity for working on modern vehicles. Just expensive for the average DIY guy.

[@chrisland169]

without the the tool (scanner) you are f...k! money light ya.

[@graymodeler]

My wife rented a VW diesel to drive up north and back. The agency failed to top off the def fluid. Half way back she called me with that shutdown warning. I had never heard of this but learned quickly. I thought she was going to have to go to the AutoZone and get some to get home. Luckily she just made it back OK.

[@dunebasher1971]

When I saw "exhaust fluid" I figured this video had been posted on April 1 but then I checked the date, and a quick Google confirmed that exhaust fluid is an actual thing :)