Questions tagged [gmc]

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

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1answer
432 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?
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1answer
45 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??? ...
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1answer
53 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. ...
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2answers
50 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 ...
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1answer
194 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 ...
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2answers
29 views

Power steering leak in 82 GMC truck

I have a 1982 GMC K1500. This junction where the steering column connects to this other part is moist and occasionally drips a reddish fluid. What is this other part called and what is involved in ...
2
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1answer
601 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 ...
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2answers
14k views

What does this symbol on my dash mean? GMC W4500

The light can be switched on or off by operation of the stem on the right of the steering wheel, the same control that operates the windshield wipers. I can't detect any difference whether it is on ...
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2answers
31k views

Driving in 3rd gear what will it do to the transmission

My daughter drove her pickup in 3rd gear on the highway. Will it damage the transmission?
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1answer
103 views

Transmission is slow to engage

I have a 1988 GMC Sierra 4x4 truck, and I recently bought a rebuilt NV3500 transmission from a 1995 chevy truck (I picked this year, because from 1993 onward, this particular transmission used a ...
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0answers
137 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 ...
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0answers
31 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?
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1answer
164 views

instrument symbols for a 2008 GMC w5500

Just bought this truck but have no manual for it. Just wondering if anyone knows where I can get one, or information for a website where I could go to get information on symbol meanings for the ...
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1answer
50 views

Tire pressure and new tires

I bought new tires in September. I have returned to the place I purchased them many times due to malfunctions. I feel like I am putting air in my tires all of the time. I know with temperature change ...
4
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1answer
5k views

2004 GMC Yukon Denali, intermittent no crank/no start/no noise

OK, it started doing this a few months back with no rhyme or reason. Before this happened, sometimes would start beeping after engine start. A long 18 beep procession. Don't know if related. When ...
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0answers
11 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 ...
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1answer
120 views

Why does my van battery have three terminals, and how can I replace it?

The battery in our (converted) 1991 GMC G2500 Vandura has a battery with three terminals, which I believe is now dead (reads half a volt with multimeter). I'm guessing the second positive terminal is ...
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0answers
23 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.
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1answer
34 views

2012 Yukon Trailer Brake Controller not working

I have a 2012 GMC Yukon with a trailer brake controller that has worked fine for the past 5 years. Now all of a sudden, my trailer brakes won't operate. I tested the voltage between ground and the ...
2
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1answer
95 views

Tire popped and shredded inside, Should I attempt an at home repair or buy wheels and drive it to a mechanic?

So my bearings were messed up and as I was coming home one night the right tire popped on me and I freaked and kept driving home. Once I got home I had realized the tire fell off the rim and shredded ...
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0answers
31 views

Acrid eye burning smell from our airconditioning

We own a 2016 Yukon Denali. The air conditioning works but it give off a very acrid eye and throat burning. We took it to a dealer but they did not fix it. The cabin filter is new, it was deodorized ...
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0answers
27 views

Envoy 2004 sputtering while driving and idling

GMC 2004 Envoy sputtering while driving and sputters while setting at a light or something
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1answer
1k views

No pressure in clutch after bleeding the system

I have a 1992 GMC C2500. When I got it there was no pressure at all in the clutch. I bleed it from the bleed valve for about 20 minutes to make sure there was no more air bubbles coming out. After all ...
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2answers
99 views

Oil change done wrong

So I recently took my 2011 GMC Terrain to get an oil change. My truck takes synthetic oil so oil changes are pretty pricey! It’s only been about 2 1/2 weeks since I gotten this oil change and since ...
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2answers
2k views

Van won't start and no lights come on; battery good

I have a 1992 GMC Vandura 2500 5.7L. A few weeks ago, I tried to start it. All lights and radio came on but it wouldn't start. I tried again a week after that to show my dad but it still wouldn't ...
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1answer
144 views

2015 GMC truck check engine light no longer on

Had my check engine light on. Put a code reader on it to see what it was. It went off on its own a few days later. Went to dealership and told them what the code reader said it was before it went ...
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0answers
676 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....
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2answers
14k views

Why do you have to replace brake pads on both rear wheels at same time?

I have a 2002 GMC Yukon 1500XL. The right rear brake caliper went bad because of a torn rubber boot, which caused the brake pads on that wheel to wear out really quickly. I replaced the caliper, rotor ...
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1answer
3k views

Sputtering and hesitation upon acceleration and intermittently

I have 98 GMC Sierra 1500 RWD with 4.3 L engine and automatic transmission. Have replaced the following within this year: distributor cap spark plugs and wires valve cover gaskets catalytic ...
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0answers
12 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 ...
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1answer
123 views

High Mileage GMC Yukon hybrid

What is considered high mileage on used Hybrid GMC Yukon? I am considering the purchase of a used Hybrid GMC Yukon or Chevrolet Tahoe. Is 125,000 high mileage for a Hybrid, like a standard gasoline ...
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1answer
78k views

My rpms are going high and my mph take a minute to go higher on my GMC Yukon

When I put my truck in drive and step on the gas the RPM's go up to 3,000 but my MPH will stay at 10-15 When I let go of the gas a little bit I can feel the truck kind of pull and the RPM's will go ...
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0answers
51 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 ...
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2answers
4k views

Trouble rewiring O2 sensor harness after dogs ate it

This is a 2005 GMC Yukon 4x4 4.8 L. Ok, dogs actually ate my harness going to Bank 2 Sensor 1 O2 sensor. The connector from the body side of the wiring is completely gone. I found a connector I can ...
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1answer
199 views

Broken bolt in intake

I have a "2005" Canyon with a 3.5 I5,the other day I was putting the intake back on and broke a bolt in the intake,I think I have access to the broken bolt thru my wheel well. i have a good idea on ...
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1answer
95 views

Repair oil leak in gmc truck

What do you recommend to stop oil leak on intake manifold in GMC 350 gasoline truck? Have used red forma gasket?
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0answers
202 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 ...
2
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0answers
59 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 ...
5
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5answers
108k views

Random RPM jump when accelerating hard

I should state first off that I'm not much of a car guy when it comes to the actual mechanics behind them. I just wanted to check if there's anything going wrong with my transmission. I drive a 03 ...
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1answer
21 views

Leaking at top of rear door

2006 GMC Siera Ext cab. I have a leak. water leaks in around the top of the left rear door. It appears to come down the rear door post. I have replaced the weather stripping and that didn't help. Any ...
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1answer
130 views

What would cause the Reduced Power Warning Light to come on when engine is under stress, but then reset upon turning ignition off and back on?

We test drove our 2011 GMC Sierra Dually Diesel Crew Cab with 117,224 miles on it and immediately got a check engine light. Upon inspection, it was determined that the catalytic converter was bad. ...
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3answers
79 views

Part numbers for older GMC truck

I recently bought a 1982 GMC K1500 4x4 that I'm looking to restore. The truck body is in great shape but some of the mechanicals need work. I want to make it a daily driver, not a show truck. I'm ...
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0answers
33 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?
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2answers
1k views

Tire rotation, and wheel alignment led to broken tire pressure sensor

I had my 2012 GMC Terrain serviced: Tire Rotation Brake System Flush Wheel Alignment Before taking the vehicle in, there were no outward signs (alerts, false-positives or otherwise) of any problems ...
3
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1answer
2k views

Positive cable smoking…

I have a question. My truck has the battery next to the frame. Positive is almost impossible to get to. There is a positive red box in the engine to connect the positive jumper cable to. I had a dead ...
2
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3answers
234 views

12V power disappears, inexplicably comes back when measuring voltage across battery terminals

Lately, my car has ocasionally had an issue where it completely goes black, no lights, no power windows, no cigarette lighter, and obviously no ability to start the engine; cant even get the solenoid ...
2
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2answers
121 views

GMC Yukon leaking coolant. Wondering where to look

Loosing coolant. When I crank car it leaks a lot of coolant, but stops when driving. If I fill the reserve up I can't see it leaking anywhere. As soon as I put it in drive it leaks like a faucet for a ...
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2answers
58 views

1995 gmc Sierra 1500 [closed]

Since it snowed the water in my 95 gmc Sierra 1500 froze and cracked the block at the top and I went to fill the radiator up and everything just poured out on the side of the motor but you have to ...
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0answers
28 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....
3
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1answer
195 views

6L90 Transmission swap

I'm swapping out a worn out 6L90 transmission that has over 220k on it in a 2011 GMC 2500 HD with one that has 89k on it from an identical truck. Will it have to be reflashed or reprogrammed to work?