2002 Chevy Express Not working: speedometer, radio, dome li

DHOUSE

MEMBER
2002 CHEVROLET EXPRESS
V8
2WD
AUTOMATIC
95,000 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.

Monday, April 28th, 2008 AT 11:18 AM

3 Replies

RHALL77

MECHANIC
3,361 POSTS

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

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Monday, April 28th, 2008 AT 11:45 AM

DHOUSE

MEMBER
2 POSTS

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.

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Monday, April 28th, 2008 AT 11:57 AM

MERLIN2021

MECHANIC
17,250 POSTS

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!