Chevy Impala No AC Diagnosis + FIX

[@sv5799]

Same issue on my 2012 Impala.. No modulating ground signal from the HVAC dash controller.. Pink wire corroded.. Looks like it was probed yet it was still all taped up in the conduit.. Damn GM harness.. Great video helped big time.. Thanks

[@fluffy_grape7852]

I couldn’t believe it but it was the control panel thanks for the direction.

[@Visitour72]

Excellent information! Thanks! The variable disp. Compressors are more complex systems to diagnose. May I add that I believe the PW modulation signal to the compressor control valve is governed by the evaporator temperature sensor?

[@TronyMusic]

Thanks for the info.. It helps me to added knowledge by troubles & diagnostic.

[@JasonfromMinnesota]

Great video!!

[@king_Charles501]

Good video man you just saved me more money

[@alexandermilanes869]

WOW. 😮 thank you so much for the Video.

[@jlsims1276]

My ac in 07 impala also keeps clicking on/off meaning going from recirculation to fresh causing it to get hot but then switches back to cold. What could that be? Thx.

[@tamiamiracle382]

My ac was working fine yesterday in my 2011 impala and was super cold. Today no air is blowing out at all, cold or hot. I switched the dial from feet vents to defrost vents and a noise that sounded like an automatic paper towel dispenser was coming from inside the dash.

[@djquiq]

If you have no air blowing at all I would check your fuses first then your blower motor. This is a video of how to get to yours kzbin.info/www/bejne/nIq1nKmchMaVbrs

[@natashacobbett9737]

Sounds like the actuator went bad. I believe it'ss three of them one on the driver side add two on the passenger side having the same problem.

[@Tyvictoria2020]

Mine sounded like a loud roaring sound then stop when I turn the AC off my actuators are bad

[@ericrountree9091]

Where is the cold side at. To put my ac pro. Because it's not going at the port by the brake booster. Not sure if its because it's striped and no way for it to grab. Or if that's the wrong hot side

[@reddhedds]

My car still gets cold air when I’m driving through the fresh air vent so I think my compressor works fine but the fan won’t turn on. Is that a wire found in the same place? Similar problem or different?

[@djquiq]

I'd check any fuses first of course. Then I'd go under the glove box remove the "hush panel", it has maybe 4 plastic clips holding it on and you'll see the blower motor. You could do a tap test on it like I do on the heater panel in this video and also check your blower motor resistor. If all wiring checks out intact, and if you're doing the work yourself, I would just replace the blower motor and resistor.

[@DarthMasiah]

the blower stopped working in my 2012. changed the resistor and my blower turned back on. hello ac!

[@fecklarjenkins2549]

Is there a way to bypass the pink wire in some way if it’s not activating the compressor valve? And I do currently have 12v on tan

[@levaroustaylor343]

My AC blows warm air and I change out my blower motor and my resistor and all my actuators and put a vaccum and tried to recharge it only hold a half of pound what can be wrong

[@jorgenvonstrangle000]

So my ac is not working, the snowflake on the ac button flashes 3 times, i don’t hear the ac compressor coming on either. The heat comes out when i put it on hot but obviously no ac, should I just get the ac compressor checked. I hate wasting money on a new compressor and it seemed to been working yesterday

[@djquiq]

Yep, when the ac button flashes its telling you the system has a problem. So definitely have someone check out your ac system.

[@Loudpackshawtyyy]

Man can somebody show me the cords underneath the glove box?? It’s like a short there but I don’t know what is what

[@treygarcia8595]

I'm curious as to what the psi readings were before the repair. My ac is not working as it should but the low and high side readinging are really high

[@djquiq]

I can't remember what the readings were beforehand unfortunately. But in your case if the compressor is engaging and both high and low side psi readings are high, first thoughts are either an overcharge or a condenser that is very dirty. Could also be other things as well, but make sure it is properly charged first.

[@esco361]

@@djquiq I figured it out. I have a Chevy impala 2010. It has 2 radiator fans. Only 1 was engaging which was enough to keep the engine at slightly higher then normal temp but the second is really for cooling off the ac condenser coils. Both fans have high and low but my fuse box was bad. I replaced fuse box now both fans work as they should AC BLOWING COLD. thanks for responding!!

[@juliorubio6]

So my ac was running warm on my 2013 Impala so I used the A/C Pro with uv dye to see any leaks and I found one coming from a hose from the compressor but I’m not sure when it runs to. It sits right between the cooling fans and the engine. Would it be compressor to condenser lines?

[@djquiq]

I'm not positive but I believe you are right. Take a look at the parts on here bit.ly/3l6vS6a

[@juliorubio6]

@@djquiq appreciate your response thank you. Those were them and I actually swapped them out today, recharged ac, ran cold to breakfast then on the way home, I noticed it took awhile to cool and here in arizona I could tell the delay it was having with the heat outside. I then felt the cold air trying to come through and then all of sudden boom warm air. I’m thinking I’m in the same boat as the video you posted above

[@jorgenvonstrangle000]

My car cooling fans blow hard, they work still too. But would the AC Compressor be the case? My air gets cool cold but it’s not as ice cold like it probably should be. could it be that?

[@djquiq]

I'd get it recharged first and check from there. Hopefully you're just slightly low on refrigerant, because when the panel goes bad its normally just the AC works or it does not.

[@ahmedalmidani2719]

I have similar scenario. The air is cold but not cold enough to take the car in a hot day. What was the fix for yours? I checked the pressure in the refrigerant and it’s in its limit.

[@rwieber79]

Could this be the same problem on an 06 Monte Carlo with the clutch not engaging and I have no voltage at the relay or the 10 amp fuse under the hood. Every couple days it will work perfectly then out of nowhere it quits again for a day or a few and then boom it works again?

[@djquiq]

Yes it could be but I don't have a diagram for a 06. I have one for a 07 and I could email it to you if you want.

[@rwieber79]

@@djquiq I'd appreciate it if you would please. Its working again today and another weird thing is when I use my test light connected to the positive on the battery it still doesn't light up when I check the fuse while the ac is working. But when I connect it to the ground on the battery and check both sides of the fuse it lights up. Is this normal or am I right think it should be coming on when connected to the positive side of the battery? My email is [e-mail]. Thanks again

[@djquiq]

@@rwieber79 No its right to check fuses with the test light connected to battery negative because there should be power on both sides of the fuse.

[@rwieber79]

Ok thanks, its still worked today so well see what happens when it stops again. I'm thinking it's the low pressure switch but I cant find the damn thing on this car for nothing. I found the high pressure one on the line with the high pressure fitting under the factory air box but I cant find the other one anywhere nor is there anything I've found online to help.

[@williamlauff9937]

Blowing hot air light won't stay on

[@nicholearabie8198]

Mine too...helppp😢

[@j.a.r.family2576]

That snap on Voltage tool is prolly more expensive than that car lol

[@buickparkave-oi7ki]

No it's not lmao stoopid

[@shooshoo448]

My car ( 2014 impala) just started doing this yesterday. The ac is blowing warm and my temperature gauge doesn't move from cold yet my blower fans are now blowing everytime I step out of the car.

[@goodwillhunter21]

Mine was doing the same i replace temp guage sensor. Also try unplugging the battery for 10 min. The temp guage might start working again.

[@shooshoo448]

@@goodwillhunter21 miraculously my air started blowing colder than ever the last few days 3 days later and my temperature guage started moving regularly again until day b4 yesterday after I parked my car for a day. Now it's back to blowing warm and the guage isn't moving. I'm thinking it's a glitch somewhere

[@goodwillhunter21]

@@shooshoo448 i have to use my code reader to clear the code to get rid of the gauge propblem if you have one try it. I have to same glitch one in awhile.

[@shooshoo448]

@@goodwillhunter21 I don't have one but I'll get one . Thanks.

[@RiverRatAdventures]

U from Boston? Lol

[@djquiq]

Lol no, Pittsburgh actually

[@johnhenry3820]

Anybodys high pressure hose ever blew off?

[@djquiq]

Make sure your fan works and your condenser is clean of debris and free of obstructions.

[@johnhenry3820]

@@djquiq Yes everything is good. I think it might be a clogged orifice tube

[@indiaknox9555]

i phone 4 dafuq