My new battery I bought for 2003 Avalanche is dead in the mo rning. Something is on 2003 Chevrolet Avalanche 1500

pulling down the power to my battery at night. Were do I start troubleshooting. The alternator seems to be O.K.

by in Saint Louis, MO on January 16, 2012
Get Your Car Fixed at a RepairPal Certified Shop.
We certify shops based on expertise, quality work, and verified customer reviews
1 answer
ANSWER by , January 16, 2012
This is a common problem. One of the computer modules is not going to sleep. Not knowing your level of knowledge it will take an experienced tech to find out which module is causing the problem. Probably the BCM (Body Control Module).