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GMC Sierra 1500 Questions

Get answers to questions about your GMC Sierra 1500 at RepairPal. Find solutions, diagnose problems and get back on the road.

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623
questions

every time i try and put it in 4x4 it just keeps jumping out of it

wont go back to 2 hi,any suggestions.

The truck has 33289km. I've had it since new. Always taken really good care of. This would be the first engine trouble I've had. Please help.

Dimmer switch . Sorry my spelling not good

i have a GMC sierra 1500 I've change the switch twice an change the actuator three time an am still getting the service 4wd message i check online to find the answer an it's the the same thing change the actuator

and the actuator three time an it still not responceing when am drive an the service 4wd message is coming up

02 GMC Sierra, 5.3
The dash button for 4x4 shows blinking in the 4x4 hi position. When I press the 2 wd button, the actuator arm on the front diff. retracts, extends, retracts and then extends again where it then stays causing the front end to be and stay engaged. (I took the actuator off and plugged it back in to watch it do this) Had my daughter hit the button so I could unplug it when the are retracted so I can at least drive to work on dry roads in 2 wd. With the snow we've had recently, really need to get this figured out and fixed.
I replaced the switch assembly on the dash with no improvement. 4 wd high light blinks and the dash warning says service 4 wd. Any help as to what would cause the actuator motor to extend and retract repeatedly?

Thanks in advance for any help.

installing a jvc radio with navigation and there is a wir to connect to the speed sensor.

At times my speedometer is stuck between 10 and 40 mph when I haven't started moving and when driving moves slowly. other time it's fine or at least I think. It is starting to get worse. I was cited for doing 80 mph when my speedometer was reading 70 on cruise control. My oil pressure gauge is stuck on the high side all of the time.

Every time I go to put down the windows in my truck there is a grinding noise. Could this be a simple fix or is it more complicated?

My truck was in shop to repair exhaust manifold leak and battery went dead. They left key in ignition. They recharged it but now the trans shifts hard 1st to 2nd.

This started after trying to determine why the battery would sometimes go down overnight. Had pulled the fuses and relays one at a time and replaced looking for a short. After this it now only turns over but doesn't start up. I did notice that the steering column doesn't lock any longer. Also by accident inserted the key for my 2006 Silverado and it turned the ignition switch. Could this be a problem with the Passlock? The fuel pump comes on when the ignition is turned on for about 3 seconds and goes off.

had the truck pluged into computer and is not reading any codes or 4wd at all what could be the problem checked grounds and im at a loss now of what to do

bruning oil

when I was driving I got a message that the door was open when it was not. after that everything on the drivers door controls stopped working.

Everything was going normal, I drove to a store. Came out of the store and tried to start up my truck but it wouldn't start up (never had this issue before) and I just kept trying, it eventually started. I tried to move my truck, but all the lights on the instrument panel started to flash and sometimes stay on. The gauges would start off at their normal spots but then quickly all drop down to 0. The engine kept stalling, no matter what speed I was going. The truck would only run for a maximum of 1.5min. I was uncomfortable with getting it on the road (severely freaked out actually) so I parked it and got a different ride home. It was like everything just completely stopped immediately. I tried about 30-40 times to get my truck working, but I couldn't even make it halfway around a very small parking lot before it died again.

air only comes out main vents, no defrost or floor when selected. 2003 1500 SLT.

Does the windshield washer resivor need to be removed?

My 4x4 is stuck in 4lo, replaced everything , what should I do next?

when its in 4wd the front wheels do not spin at all but when i put it in 4wd and jacked it up the wheels were all locked in 4wd

how to remove ac condenser

Changed sensors, engine light still on! computer printout mentioned a "FUSE" plus the O2 sensors to be changed. Is there a fuse in this system? Codes:P0161,P0141.P0060, P0056, P0054, P0036

The truck is making a squeak noise like a rubber toy when I hit the gas. Here's a link to a video.

http://youtu.be/u2HQbKr5MBQ

Anyone have any idea what is causing it?

we can get fluid out of the front breaks but not the rear

i use it to work and travel with out a problem but the speedometer arrow won't move from 0, i use my cellphone speedometer app to know how fast i am going, what can be wrong?

my a/c clutch is engage all the time like when i have the HVAC it there off or i on plug the high or low pressure switch the clutch it still engage but it just turn off when i unplug the a/c relay switch or shut off the truck

OBD-II Scanner throws a code P0309 (misfire cylinder#6)..
My truck feels like its stuttering when i put it under load..

It does it usually when I first start it. Started out just doing it every 3 months, now it does something crazy every time I start it. I have read similar posts and they recommend replacing the Encoder Motor Sensor. Is this an expensive fix? Sometimes it starts and says it is in Neutral, sometimes Auto only, sometimes no lights are working. Sure is scary to pull out and realize it is in 4 Low.

the recharge only held for 6 mos. Is it possible a tube if the have them is cracked or a blet is causing the problem

I have the "Service 4wd" light on, selector switch will not change from 2hi to neutral, 4hi, 4lo or Auto 4wd. Tried a new selector switch with no luck. Trying to decide what next to check?