Dash lights and gauges not working...

SOURCE: 2000 GMC Jimmy will not start

The oil presure switch does have some bearing on the problem but my suggestion is to change the coil. I had a the same problem with an astro van. I changed everything that you have described and it fixed the problem just for a little while and then all of a sudden did it again. I changed the coild and the cold start swithch and never had the problem again.

SOURCE: fuel gauge stuck on half full

I can tell you almost for certain your fuel level sending unit is bad, I have been able to fix them though. It requires removing the gas tank and then the fuel pump. You can if your inclined, bend the brushes on the small circuit board over more so they will make better contact on to it. Other wise its a new fuel pump assembly, check all plugs and wiring by unpluging and repluging them to insure no bad connect. It is possible it could be the guage itself, but in thirty years of fixing cars never had a bad guage

Dale Farr

• 78 Answers
• Posted on Mar 18, 2009

SOURCE: wiring diagram or fuse box diagram-2007 GMC Envoy Denali

Hi there;

Here is the wiring diagram for the trailer wiring for your truck.

Hope this helps
Farrout!

Harvey N Tawatao

• 3854 Answers
• Posted on May 13, 2009

SOURCE: stereo wiring for my 1997 jimmy

Car Radio Constant 12v+ Wire: Orange
Car Radio Switched 12v+ Wire: Ignition Switch (The radio harness does not provide a switched power source. Run a wire from the Ignition Switch.)
Car Radio Ground Wire: Black
Car Radio Illumination Wire: Gray
Car Stereo Dimmer Wire: N/A
Car Stereo Antenna Trigger: Pink
Car Stereo Amp Trigger Wire: N/A
Car Stereo Amplifier Location: N/A
Front Speakers Size: N/A
Front Speakers Location: N/A
Left Front Speaker Positive Wire (+): Tan
Left Front Speaker Negative Wire (-): Gray
Right Front Speaker Positive Wire (+): Light Green
Right Front Speaker Negative Wire (-): Dark Green
Rear Speakers Size: N/A
Rear Speakers Location: N/A
Left Rear Speaker Positive Wire (+): Brown
Left Rear Speaker Negative Wire (-): Yellow
Right Rear Speaker Positive Wire (+): Dark Blue
Right Rear Speaker Negative Wire (-): Light Blue
Good luck and hope this helps.

SOURCE: 1996 jimmy gmc fuse box

Look on the driver's side fender well under the hood. Should be a long black rectangular box there. That is the power center or fuse block. The relays and fuses are inside. The top is not hard to remove. Hope this helped and best wishes.