Rear integration module battery drain

[tanman98]

Hi everyone, I am working on my sister in laws 05 leasbre custom and have narrowed down a battery drain to the RIM. .05 amp draw after the car is asleep. Unplug the RIM and it goes away. Is there much diagnosing as far as making sure the draw is the RIM and not something it controls?

 

[02LTD2.0]

Try this link to Chiltons

McDowell County Public Library - Chilton Auto Repair

mcdowellpubliclibrary.org

 

[CorvairGeek]

If the car has an OnStar module (behind the carpet on the passenger's side of the trunk, IIRC), disconnect it and see if the drain goes away. They are known for this problem.

 

[02LTD2.0]

You should also have the battery load tested. If it's older than 3 years it may be getting weak and not accepting a charge. Major auto parts stores like AutoZone and O'Reilly's test for free.