Instrument and system failure

2000 GMC YUKON

350,000 MILES • 5.3L • V8 • 4WD • AUTOMATIC

BAL4

MEMBER
3 POSTS

The battery light in the message center is on permanently. Several gauges have stopped working as well as some lights. My air conditioner has failed, won't turn on. Cruise control has stopped working and rear window defroster has stopped. All are associated with the battery light in the message center. I was told it was in my ignition switch. I have replaced it and all associated wiring. Did not work! Can you help me?

Jun 12, 2019 at 1:18 PM

JACOBANDNICKOLAS

✓ASE Certified Mechanic
110,194 POSTS

Welcome to 2CarPros.

I need to start simple with this. The first things I need checked are the power supply to the cluster (ignition 1 fuse) and the ground. This fuse powers the inst cluster and the body control module. Take a look at the picture I attached. I circled both things in the schematic and pictures 2 and 3 show fuse location. Check to make sure both are good.

Here are a few links that may help:

https://www.2carpros.com/articles/how-a-car-fuse-works

https://www.2carpros.com/articles/how-to-check-a-car-fuse

https://www.2carpros.com/articles/how-to-use-a-test-light-circuit-tester

https://www.2carpros.com/articles/how-to-use-a-voltmeter

https://www.2carpros.com/articles/how-to-check-wiring

Let me know your findings.

Joe

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Jun 13, 2019 at 8:39 PM

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