1995 Chevy Truck and Tahoe Speedometer Calibration for Perfect Accuracy

[@AutoEdits]

Howdy everyone, thanks for watching! Leave a note here in the comments...

[@pistolpete007]

how did you figure out the gear ratio?

[@Lambrocio217]

Ah

[@pistolpete007]

Ok so I finally got back around to this and figured out the gear ratio for my truck from the RPO Codes. Mines was GU6 which is 3:42. Calibrated mine today. The part came in yesterday. Can't believe I've been riding around in my truck for almost 20yrs thinking I'm doing 50 mph for example when I was really doing 38 mph. Go figure that.

[@williamandrews8273]

I have the same problem with my truck, a 95 C-1500 Silverado SWB, Extended Cab. When the Speedometer reads from 20 to 50 mph, the gps on my iPhone reads 7 mph less. When I go 75 mph by gps the speedometer reads 89-90. Since it is OBD-1, no codes were recorded. Thank you for showing me what and where the problem resides, and how to fix it.

[@johngabriele6532]

On my 99 Escalade/tahoe even my scanner didn’t fix my speedometer

[@AGPullen]

Do I have one of these trucks? No. Will I own one of these trucks? Probably not. Did I watch the entire thing because I found it interesting? Absolutely! Great content man!

[@AutoEdits]

I absolutely love to hear this and truly appreciate you! Only thing keeping me going at this point.

[@ArtDaBarber619]

​@AutoEdits Did you have to disconnect the negative every time you reset the VSSB?

[@Realricketycricket]

Another non Tahoe owner that just digs your content man. Love the commitment to making things right. Keep up the good work. See ya on the trails

[@AutoEdits]

I appreciate that!

[@TVCColin]

Love the videos with this truck. It’s hard to find good content on these rigs

[@AutoEdits]

Thanks!

[@rockymtnredneck4888]

It’s not that hard. There’s still a heathy following with OBS Chevies.

[@ArtDaBarber619]

I just received my VSSB for my 95 2 door Yukon today. So excited to install it and see what these 4.10 gears are like with 33 tires. Thanks for the very detailed instructional video!!!

[@AutoEdits]

You betcha! Good luck on the install.

[@ArtDaBarber619]

​@AutoEdits Do I have to disconnect the battery every time I adjust the codes, or will turning of the truck, make the adjustments and starting it back up work?

[@cleveldjay]

Dude nice, now I can see how fast I'm driving home after you sell me your Tahoe.

[@AutoEdits]

😂

[@jeremiahwoody4966]

Love the tahoe videos. My 97 2 door is getting 90% of the mods due to you. Thank you sir.

[@AutoEdits]

Love to hear this!

[@jasonheinrichs8200]

Thanks for the awesome video, I got a 93 project c1500 and the dash was obliterated from Texas heat so I did a dash swap. The original cluster didn't have a tach so I got one from another truck but now the speedometer is off by 10mph, I have been trying to figure out how to calibrate it but hadn't found anything on these older trucks. Now I will be able to calibrate it for the size tires I have and have a very accurate speedometer and trip meter/ odometer (I as well have a gas book and keep track of my mileage) (my ocd has been going crazy cuz I know the numbers aren't right lol) Thanks for a great video

[@AutoEdits]

Glad it could help!

[@baldeaglegarage]

Great video! I have a few gmt400s and always skipped the 95s because they are on OBD 1.5 and have quite a few specific 95 year only parts. I definitely need to calibrate my speedo on my 97 with 33s.

[@AutoEdits]

Thanks for the info! I'm just starting to learn the many little things unique to each of these years.

[@kevinmartin1679]

97 won't calibrate the same way

[@tyhustle54]

​@kevinmartin1679 please explain I need it😂😂

[@osrr6422]

95 is a crossover year (96+ interior but, with OBD 1.5 and a TBI motor). 96-00 is OBDII. 96-97 "Black Box" PCMs are a bit limited on what software can tune them, 98+ are much better and if you want to get really involved you can repin the harness to use a programmed "0411" pcm.

[@calvinkatelynnhardage8576]

I love the videos on this truck! I love your channel because of the diverse vehicles. Ram Johnson was my absolute favorite and now the Tahoe. It’s different. Everyone is doing Jeeps, almost no one is doing these. Keep up the great work and please continue the videos on this truck. P.s. where’s the corvette?

[@AutoEdits]

Really wonderful to hear this from ya! Thank you for the support! The Corvette is just sitting on the side yard for now being stored. I take it out every once in a while but that's a bout it.

[@TrokaRC]

Thanks just installed a stage 1 chip, now time to order this from haris tuning webaite. Thanks!! 👍

[@Gilliatt83]

Love the fact the gearbox works better now.

[@AutoEdits]

I was very happy about that!

[@11aggiefootball]

Loving this channel and especially the Tahoe!!!

[@bubbie3533]

Happy Sunday Jason. 👍

[@AutoEdits]

Howdy... Same to you!

[@EricErnst]

My speedo reads a little bit faster than I'm actually going on my 92 c1500. I may check this out. And I'm getting ready to put 285/75R16s on my 90 k2500. I'll have to check these guys out.

[@AutoEdits]

For sure, especially if you up size a little bit!

[@julianmdeleon323]

Looking forward to the gas consumption calcs! I have a 95 suburban 2500 and want to go big tires but would like to see what the mpg hit would be first

[@AutoEdits]

I’ll check it out!

[@griffinleblanc8260]

Need more of this truck!!!!

[@AutoEdits]

I agree... let me get back from my Jeep trip and I'll dig in on this thing!

[@mikeytryingtofixthings9355]

It should have changed your shift points in the transmission. That is what mine did back in 1998 when i installed it. I need a new 1 like you got so i can calibrate mine since i put 39.5 swampers on it.

[@AutoEdits]

It did... makes a much improved feel while driving.

[@franciscovasquez4555]

Super cool, thanks for the shared info

[@matthewklapheke9816]

Great job, great video. Very helpful. Thank you.

[@AutoEdits]

Glad it was helpful!

[@Skitter302]

Kinda nice you can "chip tune" your speedo. I have to crawl under mine and swap the gear to correct the speed.

[@AutoEdits]

Yes, especially since it took so much "tweaking" to get right... lol

[@TheSamuraiRonin]

Just got my own obs chevy yesterday 😁. 98 2door tahoe with heap of issues & I feel the buyer's remorse a lil bit on this one 😅. Ticking sound engine for starters 🤦🏻‍♂️. Windows wont go down or up due to regulators fault. Previous owner had gtwheels 275 on it & the popo yesterday gave me a warning already 😤 on my 1st day smh... But all is good. Childhood dream came true finally at my 40s 😂

[@AutoEdits]

Good luck on that thing! Just take one task at a time and it will work out!

[@rcairforceone]

Makes me glad I have an OBDII rig!

[@AutoEdits]

Would be much easier.

[@SILVERHORSEGARAGE]

My 94 Dodge 2500 had the same issue I put 4.30s in it but went 35s over the stock 31s and didn't have to play with speedo, just dumb luck on my part.

[@AutoEdits]

I love it when a plan comes together! 🤣

[@PaulKaiser42]

That’s a cool solution…my Speedo is not hooked up right now due to the engine swap. I was going to get a gps speedo as a solution 🤷🤷

[@AutoEdits]

I had one of those in the Mustang and liked the ease of installation for sure! Kind of interesting if you live in a city and go in parking structures and downtown... sometimes it would lose a signal for a bit.

[@PaulKaiser42]

@@AutoEdits that’s good to know!!! I did not even think that would be an issue.

[@Roberto68n]

Excellent work! What program did you use on your phone to measure your mph as you were driving?

[@AutoEdits]

Thanks! That's just Waze

[@MoloneLabe]

I need this done bad in my 05 suburban. It’s like 5 mph off at higher speeds like 70.

[@AutoEdits]

I think 2005 you can actually use a superchips style tuner since that's an OBD2 system!

[@byrd4mgt]

Thank you. So, you're basically saying the calibration numbers do not match your setup, and you are manually adjusting to find what works on the road. Is your setup correct on the truck as you entered it? Maybe the tires are worn/over-or-under-inflated? I'm assuming the table is supposed to represent existing gear ratios with new tires, properly inflated, cold.

[@jeffk5386]

How does one go about removing the speed limiter on the 98 Tahoe? Shuts down at 100 mph

[@AutoEdits]

🤷‍♂️

[@TrokaRC]

Same website haristuning offers a chip for tbi & vortec models. Mine was 285 shipped.

[@ArtDaBarber619]

What were the symptoms before tuning? My 95 2 door Yukon is not shifting from 1st to 2nd. Changed to 4.10:1 & 33 tires. Did you have issues with your rig not shifting gears?

[@RALPHD099]

heck yeah, i need this BADLY…!!! thanx..

[@PonysGarage]

YEAH! A Tahoe video!! Thank you🙏!!

[@AutoEdits]

I do really like that truck... Just need to get a bunch of jeep stuff done and then back to the Tahoe for more love!

[@thomasexeter97]

This video helped me a ton!

[@AutoEdits]

Really glad to hear this!

[@bobbysimmons1744]

HELLO JASON I GOT A ASK. I GOT RAM 1500 2016 AND I WAS WONDERING COULD I PUT SOME HEADER ON. I JUST WANT TO HEAR FROM YOU ABOUT IT

[@AutoEdits]

Sure. If you live in a state like CA it would be impossible to legally smog the vehicle but most places that might be easier. I didn't want to rebuild the whole exhaust system for the very slight gain in performance headers would provide... plus those engines sound amazing just like they are... I ran the flowmaster outlaw system and it was fantastic.

[@bobbysimmons1744]

@@AutoEdits.THAT WHAT I GOT FLOW MASTER . I WAS TOLD IF I PUT THEM ON WITHIN A YEAR I WOULD HAVE TO TAKE THEM OFF. PLUS I DIDN'T WANT TO MESS UP THE COMPUTER IN IT.. THANK YOU FOR GETTING BACK WITH ME. TAKE CARE 👋

[@bobbysimmons1744]

I LIVE IN FLORIDA

[@BernardManansala]

1:50 That's soo cute!!! Astronaut Pinto

[@AutoEdits]

I love that photo!

[@squirrelkilla7371]

All you need to do is find a flat, straight mile or more road and for 1 mile at 60mph you'll get 60 seconds in that mile. Plus or minus tells you how off it is. Then do the test again after you make the adjustments

[@AmwayXS]

How would you calibrate a 99 burb?

[@AutoEdits]

On a 99 you can use a tuner and flash the computer.

[@AmwayXS]

@@AutoEdits any you recommend?

[@presqueisle69]

I have the same problem with my 97 chevy c1500 i swapped from 4.3 vortec to a 5.7 vortec . And i put didn't tires . My speedometer is off and my tachometer is any advice from anybody please ??????

[@AutoEdits]

Dude, there's a link in the description to the company I bought the part from.

[@jorgeub27]

Great video thanks for the info

[@AutoEdits]

Any time! Thanks for being here! 🤘

[@rockymtnredneck4888]

SO much more complex than my 98 K2500. This is why I traded my 93 for a 98.

[@AutoEdits]

Does the 98 have the same TBI engine or did they upgrade that as well?

[@rockymtnredneck4888]

@@AutoEdits I have the L29 454, so it’s a bit more complex than that, but my tuner was able to correct everything with his software when he finished up the Procharger install. Before that I was running a Jet programmer that allowed me to go up to 37” tires.

[@DanMcD80]

Wont work on 96+ with black box pcm under the hood as this module is no longer used

[@AutoEdits]

Is 96 OBD2? You could actually use a tuner for that... right?

[@EricErnst]

@@AutoEdits every vehicle built in 96+ is obd2. And 95 corvettes. They were the first obd2 vehicle ever.

[@DanMcD80]

@@AutoEdits good luck finding a tuner to work with the black box pcm under the hood. They were kinda the black sheep lol

[@TVCColin]

Step 1. Have GM gauges that actually move to behind with. I have failed step 1 on my Yukon.

[@AutoEdits]

Is the whole cluster bad? Maybe a used one would be a good option.

[@TVCColin]

@@AutoEdits it probably is. My CEL does not work, fuel gauge and some other lights don’t work. It’s got 250k on it and I only drive it a few times a year. It gets about 10mpg with my lift tires and tuned ecu. It’s a 2000 Yukon Denali with the 5.7. It’s my baby.

[@DanMcD80]

@@TVCColin do a 411 pcm swap and tuning software like hp tuners or efi live. In 96+ trks gm went to the black box pcm under the hood and the module in this video became obsolete

[@TVCColin]

@@DanMcD80 yes I know. I was just joking about mine. I have a tuned ecu in it already. Thank you though that info could help someone else in here 👍

[@klumsytone]

More Tahoe!

[@AutoEdits]

I have some fun upgrades planned after a Jeep trip!

[@capnchip]

I have a '95 Silverado. The speedo is about 9-10 mph off! SO.......I just watch my GPS ( If I care ).End of problem!

[@Dinotamer-5000]

Same except mine shows almost consistently 7 over at all speeds

[@rockroosterfootwearmarketi5378]

Hi, this is Rock Rooster Footwear. We sent you a collaboration invitation email. Please check if it’s in the spam. Thanks!

[@AutoEdits]

I will check it out

[@michaelpark4120]

010011000101001!!!

[@AutoEdits]

HA! Speaking the language of our people!