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GMC Yukon XL 2500 Questions

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It will only go into auto 4wd or 4wd hi. When I push the 2wd button it blinks then goes back into 4wd auto
It will go in gear but takes a lot of power to back up. It will not back up a hill. What do you all think is wring with it.
I have dried out fuse boxes, electrical plugs and checked the ECU. The water also filled the floorboards inside, just in the front. I purged the water from the cylinders and drained the oil. Vehicle will start but will only run for a couple seconds and then shut off. I need help to figure this out.
Switch has been replaced, transfer case motor has been replaced. When 4 wheel Auto selected, at slow speed (5-10mph) truck drives and makes noises like it was in 4 wheel drive. As I understand the "Auto" position, the NP8 transfer case doesn't apply power(torque) to the front axle unless it senses rear wheel slip. No DTC codes are stored.
I REPLACED THE AUTO RIDE ELECTRIC SHOCKS WITH REGULAR H.D. TRUCK SHOCKS.THANKS
The bulbs aren't blown. I checked the fuse in the fuse box under the hood.The problem occured when I hooked up the wiring in the trailer plug to operate the trailer back-up lights.The trailer lights work now but I LOST THE VEHICLE BACK-UP LIGHTS.
I replaced the axle shift motor,switch and shift motor. Where can I find a schematic ? Is there any relays, fuses etc. Shift motor is in neutral and won't engage any gears. Help!
My 2001 yukon danali xl is having brake troubles. When I actually push the brake its fine. When I hit the gas it sticks. A burning smell is coming out of the front passenget side tire. Whats really scary is when I parked today I looked at the btire and the brake was glowing red. Whats the problem?
The dealer here in Mexico says I need to replace the module. I want to take the vehicle to the US to get it fixed. Is it safe to drive about 1000 miles to get it there? The vehicle is performing good with no problems at all, just the light stays on.
i have 200,000 over on my yukon i bought it used and the owner said it might need a new cluster cause everything jumps up and down like somthing is lose i replaced cluster and checked for lose wires whats wrong with it
i replaced my fuel pump cause i thought that was the problem i can hear it much better now but not getting gas i took lose filter to check gas flow t=and there is none even when turning the switch
I have two key fobs that suddenly neither will work the remote lock/unlock feature. I havent noticed other things not working.
LOST POWER STEREING AND BRAKES AT THE SAME TIME ON 2003 GMC YUKON FLUIDS ARE FINE AND THE PROBLEM IS CONSTANT
My reduce engine power warning came on and the throttle was disabled. The engine was not overheating but I did replace the water pump and changed the oil. The warning light is still on and and throttle is still disengaged. I cant find any other problems with the engine. It idles fine with no leaking any where. Is there a reset for that warning indicator?
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