Tag Archives: GMC

GMC truck repair questions and answers. Expert mechanics offer free help, information and advice.


2007 GMC Sierra Burns Oil and Idle Problems

2007 GMC Sierra with 50k miles has started to use oil, could this be a PCV problem? There have been problems with oil consumption on those engines. Mainly a piston ring problem, but there is a service bulletin to attempt a correction before replacing pistons and rings, which is a big job. Do you have…

Continue reading


Chevy, Buick and GMC Fuel Gauge Problem

How much does it cost to fix a gas gauge for a Buick Century 2001 model?? ProTech: Are we talking the gauge itself, or the fuel level sensor that controls the gauge? The gauge itself. To replace the gauge you have to replace the entire instrument cluster assembly. That can only be done at a…

Continue reading


2003 GMC Yukon Dash Gauges Not Working- Recall

My 2003 Yukon XL (Suburban) with 5.3 motor and 70k miles has no power to any of dash gauges. The truck runs and operates fine, but the radio, heater controls and dash lights work fine. No gauge activity at all. All gauges are at the zero mark. I believe I have checked all fuses at left…

Continue reading


1994 Ford F-250 Engine Light and Idle Problem

My 1994 Ford F-250 with a 5.8 Gas engine refuses to idle below 1500rpm. Is this a common problem in older engines and what might be causing the problem? I have a 15gpm hydraulic pump attached on a clutch pump, but the over revving is a fairly recent problem. ProTech: I’d first check for any…

Continue reading


2002 Chevy Trailblazer Dies Out

My 2002 Chevrolet Trailblazer stalls when sitting at a red light but not all the time,rpms go up then drop to 200 and car cuts off,already cleaned throttle body,changed fuel filter,changed map sensor,changed exhaust cam actuator solenoid and still stalls,any ideas would be greatly appreciated! ProTech: Is the check engine light on at all when…

Continue reading


1996 GMC Sierra Air Compressor Clicking

Why does my air conditioner compressor engage and click loudly when heater is on. ProTech: The A/C compressor will run when you have the heater on defrost to take the moisture out of the air in your car. If it did not run, you would have water running down the inside of your windshield. This…

Continue reading


2001 Chevy Blazer 4WD Won’t Disengage

I have a 2001 Chevy blazer my 4 wheel drive wont disengage unless i put it in reverse and turn the wheel then back up. I’ve replaced the vacuum switch on the transfer case, replaced the in dash switch and just today put a new encoder motor on the transfer case. what happens is i try…

Continue reading


2000 GMC Yukon Stuck In 4 Wheel High

2000 GMC Yukon-4×4 is stuck in 4hi. service 4wd light on dash is on. i changed the dash switch, same problem. i pull off the transfer case actuator and hit switch, it makes a noise and the front diff act makes noise too. the transfer case actuator does not turn though. is it supposed to?…

Continue reading


Lift Kit and Dodge Durango ABS Brake Problems

I just replaced the front drive shaft on my 2001 Dodge Durango, now my ABS light and brake light keep coming on. Does this have anything to do with the drive shaft. ProTech: Is this the shaft between the transfer case and the front differential, or one of the front wheel drive axles? Yes, between…

Continue reading


2005 GMC Envoy Check Engine Light Code P0410

Hi , i have a 2005 GMC Envoy with the code P0410 Straight six Cylinder with a check engine light. Mechanic_JK First be sure to check all the fuses. If OK, a common problem is a valve on the passenger side of the engine. If fuse is blow for A.I.R.pump, have had the pump fill…

Continue reading


Where is The Thermostat on Chevrolet Trailblazer

This article comes about by the seemingly mass confusion of where the thermostat is located on 2002 and up Chevrolet Trailblazer, GMC Envoy and similar body styles with the 4.2 liter inline six cylinder engine. I’ve seen many times, in person and online, people claiming the thermostat is on the right (passenger) side of the…

Continue reading