Having problems with your 2003 GMC Envoy ?
I lost most of my electrical on my 2003 Envoy. The windows, radio, seats, heat a/c, interior lights, back wipers. I know this can not be a fuse--where else can I look?
Crusty battery terminals or a ground cable that has developed resistance due to corrosion can let low current loads operate but nothing more.\015\012\015\012I'd suggest buying a battery terminal brush (auto parts store) which has wire bristles for the inside of the clamp and the battery terminals too.\015\012\015\012If that doesn't restore things, remove the negative cable from the battery (this one always first), trace the path of the negative cable to where it attaches to the block or chassis, clean \015\012that end then the cable connecting the block and chassis together (you may have to look for it) and finally, before reconnecting the battery, remove the positive cable from the starter terminal and clean this too.\015\012As an aid to corrosion prevention, I use either dielectric grease or at least petroleum jelly on anything before it is reconnected.
Repair Help & Product Troubleshooting for 2003 GMC Envoy
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