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GMC Yukon Denali Questions

Get answers to questions about your GMC Yukon Denali at RepairPal. Find solutions, diagnose problems and get back on the road.

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468
questions

hi pressure switch melted on back of compressor. replaced switch compressor not engaging put scanner on truck showing a/c request but not engaging can ground one leg of relay and a/c engages .at PCM #43 green wire a/c compressor relay control has 12v with power probe can supply ground and engage compressor.getting 12v at low pressure switch and ground.What am I missing

the plug to the bulb is melting

this has happen twice and the last time I soldered the connection but still melted plug

Does anyone know if this can be repaired or replaced?

Cannot lock locks with either the remote or using the lock button on the control area. Also, started truck and shut off. Motor stopped but all dash lights and radio remained on. Running boards and mirrors do not work either.

i tried to swich off and reswich it on again but still nothing change, tried to check oils also every thing is fine. i dont know why gear not shifting to down to R or N ..ect. be noted that the gear's arm is moving but not stuck in the any level.

i have tried to change key switch door button wiring harness door switches nothing has worked so far

It always works at first but then stops once it gets warm.

All of sudden while driving yesterday I heard a loud grinding noise and thought maybe the driver wheel had popped off...after stopping the wheel was still on but when I put the truck back in gear to drive it makes a very loud grinding noise.

Terrible shaking when brakes are applied. Front left caliper and rotor replaced. Both back rotors replaced, but not pads. Still shaking. If pads in back are replaced will this stop the shaking?

When opened manually it closes prematurely. What's likely happening?

I've replaced Vavle cover and I'm worried about a Rear main seal leak vs Oil Pan Gasket vs. Crankpressure vs. Timing Cover issue.

Any advice on how to investigate and fix this in a cost effective manner would be greatly appreciated.

I plugged in a computer charger, worked briefly but then stopped... Other sockets in dash and back work fine. How to fix?

The speedometer or other instrument panel gauge may begin to work erratically at times

Recently my '99 Denali has been makeing a lound ticking/rattleing noise when in reverse. It appears to be mid-vehicle and only while in 2 wheel drive. The noise arrests when the Denali is in forward drive. I have not tried to conduct an external inspection on my own outside of the vehicle when it is in reverse, or place it in 4 Hi/Low to determine if the noise still occurs. The Denali has 170,000 miles with 10 percent of those hauling modest/heavy loads. I replaced the engine at 155,000 with a Jasper engine due to a radiator failure causing the original engine to overheat and take in coolant. I have an appointment with a shop in a week, but more input is often helpful to me. I appreciate any guidance on this matter.

When I'm driving the brake start locking up and the steering wheel pushes me into on going traffic. What could this be

Guage stays on 80 lbs.pressure

We already instal update from acdelco sps section new instal programming of HVAC module,Body control module, and Engine control module. Still the same problem