Motor Vehicle Maintenance & Repair Stack Exchange
Motor Vehicle Maintenance & Repair Stack Exchange

Questions tagged [gmc]

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

151 questions
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Is an exhaust pipe broken at engine connection fixable by a DIYer?

I took my 1999 GMC Sierra 1500 w/5.3l to a transmission shop to have it replaced. The process requires disconnecting the exhaust pipes going into the engine to get access to the transmission. When the shop put it back, the driver's side pipe…
Stay-at-home-dad
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semi loud growling noise at all speeds

I have a 1998 GMC Sonoma SLS with a 4.3 l V6 Vortec. It used to purr, now it growls, sounds like a small diesel engine. Vibration can be felt (mostly in the dead pedal) and also vibrates/growls in park and neutral. Just came back from usual oil…
Thor
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Torque convertor shudder?

I drive a 2011 GMC Sierra 2500HD ex-cab 2wheel drive with a 6.0 gas engine and a six speed 6L90 automatic transmission. I have started noticing what I believe is called "shudder" from my tranny under fairly heavy acceleration or going uphill. Its…
user13279
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04 GMC Savanna G2500 4.8 V8 No Power

First time I looked at this the A/C compressor clutch wasn't engaging. Long story short: the high side pressure switch on the back of the compressor was unplugged. Noted that the engine was shaking (like it was misfiring) as I was watching them add…
Ben
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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 back to 1000 -2000 and my MPH will start going up.…
Erik
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Coolant pouring out from under 1998 GMC Yukon as fast as i put in

I filled my radiator with water and it is pouring right back out of the rear of engine as fast as i fill. It seems to be near or behind the transmission. https://youtu.be/27qV-ufMsQc How can I find the source of the leak?
Rhonda Deamon Richmond
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How do I fix my Heater & A/C in my car, suspect vacuum problem?

I didn't see this question asked after a search so I thought why not. I have a 97 GMC Sonoma with 90k miles that I barely drive. Since the hot summer is coming fast I went to use the AC and I am only blowing warm air from the defrost and floor…
Hᴇʀʙɪᴇ
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My car will not start after being driven fine

I have a 2003 gmc envoy xl it has been running fine..drove it all day. Went home 4 hrs later it will not start.. It acts like it is dead but everything from the lights to the heat works fine..I mean it doesn't make a noise no nothing..it has a new…
Angela
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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 or off.
djsunkid
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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?
lynda
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What is causing this slight vibration?

I have a 2004 GMC Envoy 4WD with a clean title, 54k miles. Very good condition. I recently purchased my second set of tires, Pirelli Scorpion ATRs. They are solid and quiet, but after changing them I noticed a shimmy in the steering wheel. Turns…
Aleksei
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Are automakers required to maintain spare parts infrastructure for 15 years?

Are (U.S.) automakers required to maintain an infrastructure of spare parts for 15-years (in the U.S. or in California)? Reading about the GM EV-1: The EV1's discontinuation ... to avoid potential losses in spare parts sales (sales forced by…
Ian Boyd
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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 and pads on that wheel. The left rear wheel is…
Karl
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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 GMC Envoy(Equivalent of a trailblazer) with a Vortec…
Alec
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Block Test: Can't suck any more air, is this normal? (1999 Suburban)

I performed a block test recently to diagnose a problem I'm having. The liquid stayed blue, but I want to clarify I have done this right. The purpose of the test was to see if I could prove a head gasket failure. After removing some of the coolant…
musicwithoutpaper
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