GMC Cars & Trucks - Page 4 - Recent Questions, Troubleshooting & Support

I wouldn't be so sure it's a bad motor. There are several limit switches in the tailgate that have to show made before the roof will be allowed to move. You really need a GM computer to work on one to be able to see in real time what switch is and which one isn't made causing the fault.

It may be that the Vandura is the chassis it uses. Motorhomes go onto a stock chassis. You could try motorhome RV forums https://www.google.com/search?q=1984+gmc+motorhome+G3500+fuse+box+diagram It says Vandura 1 Ton Motorhome https://www.google.com/search?q=1984+GMC+motorhome+G3500 ..

Question edited for clarity. Question moved to model category. In the link https://www.google.com/search?q=1998+gmc+sonoma+2.2+firing+order ..

How to install a seatbelt in a 2007 GMC envoy in the passenger side

When you replace the ECM or disconnect the battery, you have to reset the Security System and Engine Immobilizer. https://www.google.com/search?q=2001+gmc+yukon+security+system+reset .

Not according to Hollander interchange. Late 1998 to 2002 interchange. 2003 is all by itself. And 2004 to 2006 interchange. It doesn't tell what the differences are, but I would have to guess the electronic controlls.

That depends upon what the code is.

The 95 GMC 1500 V6 automatic transmission may not be compatible with the 89 K1500 V8 4x4 due to differences in engine size and drivetrain. It's recommended to use a transmission that matches the engine and drivetrain specifications of your 89 K1500.

i have same issue here 2003 yukon

How exactly is it 'jammed'? Is it wide open? Locked closed? stuck half way? Please use the Comment button below if you would like more help. Go back to the basics. Check the fuse for the motor and you that you can here the motor trying move it. With the ignition OFF and safely using step ladders access the sunroof from above. Using a stiff toothbrush, cotton buds, (cue tips), and a clean rag, clean out the channels the sunroof sits in. if you are in any doubt go to a good mechanic or a good auto-electrician and get them to look at the problem.

Question edited for clarity. Question moved to model category. Jeff is our professional technician, and has given a great rundown of the workings. Here is a physical diagram. https://www.google.com/search?q=2002+GMC+Sierra+1500HD+headlight+wiring+diagram ..

How to Deactivate OnStar: 12 Steps (with Pictures)

wikiHow https://www.wikihow.com > ... > Car Electronics Jun 6, 2023 - The only way to completely eliminate OnStar is to physically disconnect the module from your vehicle. Other than the OnStar system and its ...

How can i disconnect my onstar gps system on 2004 gmc ...

JustAnswer https://www.justanswer.com > GM Repair Jan 28, 2011 - Hi. You can disable the On Star system by pulling the fuse labeled INFO which is a 15 amp fuse located in the under hood fuse box. 1 answer · Top answer: O.k. The On star control unit (VCIM) is the only unit that receives the GPS

Try disconnecting the starter solenoid control lead and see if it still blows the fuse when no engine crank while switch in start position. Try disconnecting the alternator and see if symptoms change. You might also try using a 12V test lamp (or better, a headlamp) in place of the fuse. It may not crank but it allows you to low power circuits without blowing fuses. Observe lamp brightness as you go from run to start. Brightness is relative to current flow. Comment for further assistance.

Which airbag is this nearest to? Steering wheel? Passenger side dashboard? Seat? If it's under the seat there is often some wiring that goes to the seat belt buckle as part of that restraint system.

Visit the following page, it may help 1996-1997 Gmc Yukon Vehicle Wiring Chart and Diagram (commandocaralarms.com)

The little black box under the hood, near the wiper motor box is the chip board that controls them...wack it...sometimes it's just a broken weld and the connection to the wiper motor control doesn't work.

Im assuming that it's an automatic...Depress the brake pedal, turn the key to the run position, and shift it into"N."

Hi, Try moving the shift lever in and out of gear and back to Park then try it. Have you tried starting the truck with the shifter in Neutral? If it turns over and starts, I would check the Neutral Safety Start Switch and it's connection down under on the side of the transmission? If you are experiencing lights and dashboard indicators coming on when inserting the key in the ignition but zero response from the solenoid on the starter or the starter turning over when turning the key switch to the start position, I would definitely check the Neutral Safety Start Switch. This switch is the one that allows you to start the vehicle by making sure you are in Park or Neutral. It's in a location on the side of the transmission where salt, sand and corrosive road debris can get trapped that eats away at wires and connections.

Are you sure the injectors are metering? Just because you have pressure to the rail doen't mean that it's making it into the engine

Which O2 sensors came out of the vehicle an which did you put back in ? Two different types for that vehicle. DTC P0134 or P0154 (w/LR4 and LM7 w/ Delphi HO2S) DTC P0134 or P0154 (w/LR4 and LM7 w/ Denso HO2S) DTC P0134 or P0154 (w/LQ4 w/Denso HO2S)