Mechanics

CHEVY NOT WORKING: SPEEDOMETER, RADIO, DOME LI

2002 Chevrolet Express

Electrical problem
2002 Chevy Express V8 Two Wheel Drive Automatic 95000 miles

We have a 2002 Chevy Express work van w/ 5.7 auto trans. Came in from the airport on Friday night and noticed and burning electrical smell. Looked down and noticed the speedometer and the odoemeter were not working but the rest of the cluster was fine. Later noticed that the brake lights, dome light and radio also quit working. Van runs fine though. All fused in kick panel are ok. Checked 50amp BAT fuse under hood and it was blown. Replaced it and blew immediately. Checked under dash and can't find and burnt wires. Where do I look? Is this a common problem? Please help because I cannot go to work without this van. Thanks, Dustin.
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Dhouse
April 28, 2008.



Unless you know what your doing I would suggest taking it to a local shop the is good at electrical system in vehicles. This can be a really hairy process. You can do a visual inspection and see if there is any shorted wires like under the dash on the drivers side. But if you dont see any, I would take it somewhere

Tiny
Rhall77
Apr 28, 2008.
I just need to know if this appears to be a problem with these vans. I am very experienced with auto mechanics and am willing to do the work. I noticed that there appears to be a lot speedometer issues with the GM line and I didn't know if this may be one of them. Do you have any ideas where to start? Is is most likely a harness plug that includes the speed sensor, brake lights, dome light and radio? Are they on the same circuit somewhere down the line? The only fuse blowing is the 50amp BAT under the hood. What is it's function? There is no owners manual with this van, so I cannot trace the fuse.

Tiny
Dhouse
Apr 28, 2008.
It's likley to be the cluster, they do go bad frequently, but to know for sure, this is the test equiptment needed, and the test steps...or take a shot!


http://www.2carpros.com/forum/automotive_pictures/62217_Clustera_1.jpg



http://www.2carpros.com/forum/automotive_pictures/62217_Clusterb_1.jpg



http://www.2carpros.com/forum/automotive_pictures/62217_Clusterc_1.jpg


If you do swap it out, plug the new one in, turn key on for ten minutes to initialize it, then remove key, should now be good to go.

Merlin2021
Apr 28, 2008.