1 more problem battery draining
Team Owner
Joined: Mar 2001
Posts: 54,124
Likes: 30
From: Cincinnati, Oh USA
At night, check for the underhood lights, vanity mirror lights, door panel map lights, center console light. Don't leave the key in the ignition because this keeps the theft alarm circuit on. Do you have a radar detector, aftermarket alarm or radio or audio amplifier? Check em!
Feel the motors in your adjustable seat. Are they warm? Several posters had defective seat adjust switches. Remove the negative cable from the battery and place an ammeter between the cable and the neg batt terminal. When the courtesy lights time out, measure the current flowing out of the battery with the ammeter. GM says it should be less than 50 milliamps. My 87 draws 27 ma. Pull the courtesy light fuse so you can keep the passenger door open and remove fuses one at a time and observe if the leakage current suddenly drops. That circuit then needs more investigation. Remove the nut on the jump start terminal behind the battery and remove one at a time, the 8 red wires from that terminal to further look for leakage current. Let us know what you find.
Feel the motors in your adjustable seat. Are they warm? Several posters had defective seat adjust switches. Remove the negative cable from the battery and place an ammeter between the cable and the neg batt terminal. When the courtesy lights time out, measure the current flowing out of the battery with the ammeter. GM says it should be less than 50 milliamps. My 87 draws 27 ma. Pull the courtesy light fuse so you can keep the passenger door open and remove fuses one at a time and observe if the leakage current suddenly drops. That circuit then needs more investigation. Remove the nut on the jump start terminal behind the battery and remove one at a time, the 8 red wires from that terminal to further look for leakage current. Let us know what you find.
