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Questions tagged [gmc]

A division of General Motors which produces trucks, buses, vans, and other large vehicles.

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New LED 3rd brake light stops working

Swapped out LED taillights and third brake light on my '05 Sierra. Tail lights work fine but the third brake light will work when first plugged in but after a short while the cab lights don't work.
scott's user avatar
  • 41
3 votes
1 answer
549 views

2008 GMC Yukon 5.3L engine vibration at low speeds with cylinder deactivation

I have a 2008 gmc yukon 5.3L that has developed an engine vibration at low speeds with cylinder deactivation like when coming to a stop. Does not vibrate while normal low speed cruising but when ...
JEFF MCEADDY's user avatar
3 votes
0 answers
25 views

No start on 2002 GMC Savanna 1500

When I try to start it it will not start I was told to push the gas and it doesn't do anything at all. I replaced the alternator and got a new battery. We have been having this problem for over a ...
Danielle Serna's user avatar
3 votes
0 answers
106 views

1987 GMC Sierra - Can't connect to OBD diagnostic connector

I own a 1987 GMC Sierra and it has an ECU, I took it to a workshop to see if I've any issues, when they tried to connect a diagnostic reader to the connector (underneath the steering wheel) they ...
user15878's user avatar
2 votes
0 answers
34 views

Car steering issues

I have a 2011 GMC Acadia SLE. I can move the steering wheel easily even though the car is off. I can even move the front tires with relative ease side to side. What could be the problem, if any? I ...
user132109's user avatar
2 votes
0 answers
321 views

No crank no start 03 gmc yukon

I have an 03 yukon(5.3L) it wasnt starting a while ago and it just needed a new ignition fuse. After a week of driving it, it didnt want to start again. It has a brand new battery on it and the ...
Tbc's user avatar
  • 21
2 votes
1 answer
3k views

How do you disable Hill Start Assist in Chevrolet Suburban?

I have a 2016 Chevrolet Suburban (Z71). How do I disable HSA? After $6,000 in transmission and brake repairs due to HSA, I would really like to turn it off. Here is the problem: I stop on a hill. ...
DarkerIvy's user avatar
  • 121
2 votes
0 answers
53 views

2010 GMC Terrain misfires & leans codes

My 2010 GMC Terrain while maintaining a speed of around 60 - 70 mph starts to hesitate and if I don't release my foot from the pedal I will get flashing check egine. I've noticed it likes to happen ...
Nick Speten's user avatar
2 votes
0 answers
90 views

2000 Sierra 1500 4.8L Engine not revving properly for several minutes after start

For the past couple weeks I've been consistently having a weird issue with my 2000 Sierra 1500 4.8L when I first start it up. The engine will start and idle fine, but when I give it gas the engine ...
Matt's user avatar
  • 21
2 votes
2 answers
775 views

Airbag light blinking after ignition switch replacement

I am looking for some troubleshooting guidance on a 96 GMC Sierra C1500. I had to replace the ignition switch and now the airbag light on the dash blinks 7 times and stays on constantly. I checked ...
Brian Jarvis's user avatar
2 votes
0 answers
634 views

Speedometer doesn't work and transmission won't shift

I have a 95 GMC Sierra with a 4.3 V6 and automatic transmission. The speedometer doesn't work and will not shift on it's own. I have replaced trans fluid and filter(no shavings or anything abnormal ...
Chris's user avatar
  • 21
2 votes
0 answers
152 views

1998 GMC Sierra: swap in V6 + 5spd manual into one with factory V8/auto

How much work and how many headaches would it be to pull a 4.3L V6 and 5spd manual trans from one 98 Sierra and swap it into a 2wd 1998 Sierra with a factory V8/auto? I've done my own repairs all my ...
Franky's user avatar
  • 51
2 votes
0 answers
77 views

Electrical Issues 2001 GMC Sierra 5.3L

Vehicle is a 2001 GMC Sierra 1500 5.3L Automatic 2 wheel drive. The 10A fuse in position IGN0 keeps blowing when turning the key before engine cranks. When the fuse is blown, oil pressure and ...
user22498's user avatar
2 votes
0 answers
143 views

Possible engine knock in 1995 GMC Jimmy

Hello I have a 1995 GMC Jimmy (Automatic & 4x4)and I have been working on it on and off for about a year and a half, i have fixed many things with it but there are couple things that I have not ...
Dylan Wisdom's user avatar
1 vote
0 answers
24 views

PCM blew while on fwy. Now blows 1 second after starting

2004 gmc envoy XUV 4.2 Running perfect with NO CODES then PCM-1 fuse blew at 70mph. I replaced fuse, started vehicle, it runs for ONE SECOND and blows the PCM-1 fuse again.
shane's user avatar
  • 11
1 vote
1 answer
24 views

GMC transmission compatability

I have a2012 GMC SIRRA 5.3, 6-SPEED TRANSMISSION. Will a 2005 Yukon 5.3, 6-speed transmission interchange or fit?
James Abrigo's user avatar
1 vote
0 answers
53 views

GMC c5500 TopKick

There is a transmission problem and a code on this truck but my scanners cannot read the PCM codes. What scanner should I use to read PCM codes on a GMC c5500 TopKick?
Henry's user avatar
  • 111
1 vote
0 answers
24 views

What wiring issues am I looking at for engine swap?

Thinking of putting 2003 Chevrolet Trailblazer 4.2 L engine in 1981 GMC Sierra. Complete 2003 Trailblazer donor vehicle. 1981 GMC has a small block 305 and 3.42 rear-end. What wiring issues will I ...
Godzillasrevenge's user avatar
1 vote
0 answers
41 views

New alternator and 2 new batteries but still get bad battery light

Have a dual battery setup in my 2000 gmc Sierra with an auxiliary battery for my sub isolated through a relay to the other for charging had some issues with the lights dimming so I replaced the ...
Lildeath's user avatar
1 vote
0 answers
118 views

Coolant bubbling on 82 K1500 6.2 diesel

Vehicle is a 1982 GMC K1500 6.2 diesel. It's got a 1987 6.2 diesel engine in it swapped by some previous owner (there were many). The truck has sat for a while since I didn't really have time to work ...
Dan K's user avatar
  • 11
1 vote
0 answers
77 views

08 GMC Canyon automatic 4l60e won't engage when shifted from park into drive, but will engage if shifted from park to 1st

I have a 08 GMC Canyon 4x4 automatic transmission 4l60e that when shifted from Park into Drive it won't Engage but if shifted from park to 1st it will engage. The transmission won't go when shifted ...
Scott's user avatar
  • 11
1 vote
0 answers
39 views

What is causing my brake calipers to stick?

I sit at a job site with my 2009 GMC Sierra idling for heat, or aircon. After 20 minutes of idling, I go to drive off and the brake calipers are locked up. Already replaced pads, discs, short lines, ...
RayGMC's user avatar
  • 11
1 vote
1 answer
73 views

5L vortec won’t start

Ok, so I hope this doesn’t seem like a stupid question. Take away all logical scenarios and just answer in theory. If a timing chain could jump exactly 180’ would the intake and exhaust valves reverse ...
Chris's user avatar
  • 11
1 vote
0 answers
198 views

GMC VLOM replacement necesssary

I replaced the head on a 2012 gmc 5.3 vortec. Now getting codes of 3401,3425,3443 & 3449. Being told it is always necessary to replace VLOM when doing this kind of work. Is that true?
Pete's user avatar
  • 11
1 vote
0 answers
36 views

What engine do I have, based on my casting number?

I have a 1965 GMC TRUCK 3 speed short bed stepside. The casting number is TI1I3CZM. How can I figure out what engine I have? My truck is a step side short bed Chevy.
user50835's user avatar
1 vote
0 answers
29 views

EPS and GMC steering wheel vibrations

I recently went and got a recall done for my EPS on my 2015 GMC Sierra 1500. When i got it back from the deal I had vibrations in my steering wheel. This recall was a flash update on the software for ...
James's user avatar
  • 11
1 vote
0 answers
86 views

Transmisson problems 2009 sierra 1500

I have a '09 GMC Sierra 5.3 rwd it has just under 80k miles. I was driving home and my truck felt like transmission wasnt accelerating pulled over and shut it off. Looking around trans fluid was all ...
Matthew M's user avatar
1 vote
0 answers
342 views

Accessory coming on randomly and killing battery. GMC Canyon 2007

My 2007 GMC Canyon has had this problem for a couple months. All of the accessories turn on by itself after I have left the truck off and locked. I thought it was the ignition, because when I took the ...
Kati's user avatar
  • 11
1 vote
0 answers
36 views

No air-conditioning

If the AC was leaking and someone unhooked the AC unit, would that be causing the belt to squeak now? If so, what would you suggest?
Peggy Drury's user avatar
1 vote
0 answers
824 views

Clutch pedal won't go to the floor to engage neutral safety switch

This is a 1993 K1500 Sierra 4x4. I just replaced the clutch master and slave cylinders and bled the line. The clutch has pressure but it won't go all the way down to engage the neutral safety switch....
Missy Duncan's user avatar
1 vote
0 answers
31 views

Rear brake problem

On my 1999 Savana GMC 2500: While on jacks, my rear wheels did no stop when I applied the brake. Chevy told me my ABS needed to be replaced. I went to the Junk yard, got a $100 module and installed it....
jerry's user avatar
  • 11
1 vote
0 answers
30 views

Truck only miss fires when it gets up to temp

07 GMC Sierra 1500 5.3 engine - it radom misfires after it warms up. I have changed 1 coil pack, map sensor, plugs, and wires. It only does it after warming up to temperature. What might be the issue.
Tim Hanson's user avatar
0 votes
0 answers
18 views

ECM Acadia SLT with Enclave engine

I have a 2007 Acadia SLT with a 2008 Enclave engine . I have a couple of codes that keep coming back . P0036 P0024 they will not clear . Can I reprogram the ECM or do I have to get an ECM for that ...
Dennis Randall's user avatar
0 votes
0 answers
21 views

Fuse for reverse light

I have a 2010 GMC Terrain that both reverse lights don’t work. I can’t seem to find what fuse to look for.
Joan Rivas-Suazo's user avatar
0 votes
0 answers
31 views

Adding coolant into reservoir it comes out overflow on radiator

I changed water pump 02 gmc sierra 1500 and of course I had to drain the coolant system to do that . As I am adding coolant back into the system through the reservoir it is coming out radiator ...
jeremy dorman's user avatar
0 votes
0 answers
40 views

03 yukon electrical

Its an 03 yukon with a brand new battery in it. In the past 3 months it has went in for a no crank no start issue twice . Both times it was just an ignition fuse. Something is causing this fuse to be ...
Tbc's user avatar
  • 21
0 votes
0 answers
92 views

Change single caliper to dual

I currently have single calipers on the rear axle. Am I able to replace these with dual calipers on each side of the rear axle or will there be issues?
David's user avatar
  • 1
0 votes
0 answers
188 views

2002 GMC Sierra Brakes spongy

I have a 2002 Gmc sierra SLT that I just picked up a few months ago. The issue is that the brakes are awful, and they appear to be an issue the previous owners were chasing down too, all calipers, ...
Rapsicurio's user avatar
0 votes
2 answers
2k views

Increase volts at OBD port

My fixd scanner only says low voltage. How can I increase the volts at OBD connection my check engine light is on trying to get code. 1999 GMC Sierra 2500 with a 5.3 litre Vortec engine Scanner ...
Jim's user avatar
  • 1
0 votes
1 answer
233 views

94 Suburban 4x4 4l60e no reverse/ overdrive

94 Suburban 1500. Has no reverse or any other gear with the TCC plugged in. Unplugged the TCC and I can manually shift through the 4 gears and do 90 plus mph. So it's an electronic issue. Any guess??? ...
user54016's user avatar
0 votes
0 answers
354 views

1997 gmc jimmy Car cranks but wont start

So we have a 1997 jimmy GMC that has been running very well for quite a while. One day suddenly the car would not start. We had a couple of friends look at it and they said it might be the fuel pump ...
Cameron Frakes's user avatar
0 votes
2 answers
99 views

I have a 2000 GMC Sierra 5.3L that won't start/run as of today

My truck has died on me 3 times today. When I put it in park and turn it off the doors don't unlock themselves. Then when I tried to start it up again nothing! No sounds, no lights. Then when I do get ...
Danielle's user avatar
0 votes
1 answer
730 views

2011 GMC Sierra 1500 low beams not working

The low beams on my 2011 GMC Sierra 1500 are not working. My high beams work in both switch positions. What is the simplest and cheapest way to fix this problem?
Ryan's user avatar
  • 1
-1 votes
2 answers
5k views

Truck will not reach operating temperature

My 2005 GMC SIERRA 1500 runs at about 180/190 degrees, and won't heat up beyond that. The thermostat and coolant temp sensor have been replaced, and I've been trying to burp the system with hit and ...
Ben Hopson's user avatar