Gauge cluster diagram

1999 GMC YUKON
70,000 MILES
Avatar
JOE DENALI
  • MEMBER
  • 13 POSTS
I’m looking for a diagram all of the colors on the plug that goes into the cluster the color wiring with the names of the colors and what the colors do.
Oct 16, 2019 at 9:31 AM
Advertisement
Avatar
ASEMASTER6371
  • ✓ASE Certified Mechanic
  • 52,796 POSTS
  • ASE Certified Mechanic
Good afternoon,

I attached the connector with a pin out and function of each wire.

Roy
Image (Click to enlarge)
Professional Diagram for 2CarPros Members
Click here to log in and view diagram.
Oct 16, 2019 at 1:59 PM
Avatar
JOE DENALI
  • MEMBER
  • 13 POSTS
Thanks Roy. I’m hooking up aftermarket gauges from auto meter and in going to use the speedometer wire off the factory cluster and also the fuel wire.
Oct 16, 2019 at 3:11 PM
Avatar
ASEMASTER6371
  • ✓ASE Certified Mechanic
  • 52,796 POSTS
  • ASE Certified Mechanic
The speedometer may not work. That changes a signal inside the cluster to show mileage.

Roy
Oct 16, 2019 at 3:17 PM
Avatar
JOE DENALI
  • MEMBER
  • 13 POSTS
Okay, but will the fuel work and how can I get the speedometer to work?
Image (Click to enlarge)
Attached Media
Oct 16, 2019 at 3:24 PM
Avatar
ASEMASTER6371
  • ✓ASE Certified Mechanic
  • 52,796 POSTS
  • ASE Certified Mechanic
Not sure with an aftermarket unit. I would have to see the unit and how it needs to be wired.

The signal from the transmission is sent to the PCM and then off to the speedometer head but it is not a voltage. It is serial data.

Roy
Oct 16, 2019 at 3:33 PM
Avatar
JOE DENALI
  • MEMBER
  • 13 POSTS
Fuel gauge and speedometer.
Images (Click to enlarge)
Attached Media
Attached Media
Oct 16, 2019 at 4:16 PM
Avatar
ASEMASTER6371
  • ✓ASE Certified Mechanic
  • 52,796 POSTS
  • ASE Certified Mechanic
You can try the last one on the speedometer and see if it works.

Roy
Oct 16, 2019 at 4:21 PM
Avatar
JOE DENALI
  • MEMBER
  • 13 POSTS
Thanks for all the help. I will keep in touch.
Oct 16, 2019 at 4:26 PM
Avatar
ASEMASTER6371
  • ✓ASE Certified Mechanic
  • 52,796 POSTS
  • ASE Certified Mechanic
You are welcome.

Always glad to help.

Roy
Oct 16, 2019 at 5:44 PM
Join 2CarPros for free, one of the most advanced car repair communities on the internet. From first-time drivers to seasoned mechanics, everyone is welcome to reply, share details, and get better answers. You can add a temporary image or video first; uploads are limited to 20 MB.
Ask a Free Question
Repair Safety Notice: This information is for general instructional purposes only. Vehicle repair can be dangerous. Verify all information, follow manufacturer service procedures, use proper tools and safety equipment, and consult a qualified repair shop when needed.