How to stop drain on battery with key & all accessories turned off?

1999 CHEVROLET SUBURBAN
130,000 MILES
Avatar
ERNIE KALER
  • MEMBER
  • 1 POST
with ground cable disconnected from battery & a test light put between the ground cable & negative battery post the test light stays dim & blinks about every 2 seconds consequetively. I have pulled out each individual fuse & no one fuse stopped the test light from blinking. Inside cab by steering column I disconnected several small electrical boxes that are as small as a pack of cigerettes. Disconnecting these made no difference with the test light. One of the small plastic boxes on the fire wall in the cab makes a faint beeping noise a little like a car alarm. Im at a loss as to what to do next.
Nov 29, 2011 at 9:39 PM
Advertisement
Avatar
BMRFIXIT
  • CAR REPAIR CONTRIBUTOR
  • 19,053 POSTS
make sure doors closed at all time and wait few min before starting to pull fuses
disconnect battery ground 1st ,place a wire between ground and battery wait few min. connect test light between battery and ground ,disconnect wire ,retest

also disconnect red wire on the alternator
Nov 29, 2011 at 9:49 PM
Repair Safety Notice: This information is for general instructional purposes only. Vehicle repair can be dangerous. Verify all information, follow manufacturer service procedures, use proper tools and safety equipment, and consult a qualified repair shop when needed.