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sprinkles08, ASE Certified Technician
Category: GMC
Satisfied Customers: 22272
Experience:  ASE Master and Advanced level certified. Factory trained with 15 years dealership experience
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My 20want work03 yukon has a ground issue sometime my

Customer Question

my 20want work03 yukon has a ground issue sometime my instrument gags
Submitted: 1 year ago.
Category: GMC
Customer: replied 1 year ago.
2003 gmc yukon instrument gags sometime don't work think its a grounding issue diagram of ground wires will help
Expert:  sprinkles08 replied 1 year ago.

Hello and welcome to JustAnswer!

It appears you haven't actually confirmed that there is a ground missing, correct? If the instrument cluster is going down completely then the first step in diagnosing the issue would be to test it's power and ground feeds using a test light at the time it won't work. Has this been done?

Customer: replied 1 year ago.
I have done that using a power prob that showing a good power supply and ground. my problem is there are so many ground wires i have been checking as i find them can't get my hands on a wiring diagram for ground wires and what they control
Expert:  sprinkles08 replied 1 year ago.

An incandescent test light should be used for accurate results.

What wires have you found power and ground on?