Having problems with your 2005 Chevrolet Uplander ?

Chevy Uplander 2005 electrical problems

\015 The car is having a lot strange electrical behavior,it started with the rear door not closing simultaneously with the others than I had problems a few times to start it with the starter failing, chipping and than blocking with no way to challenge it other than boost the battery. A few weeks ago the ABS light went on but after a cleaned the connector the light comes on ones in awhile.Anyways the big problem is the power door locks owning and close by themselves,of course the lights in car are going on,nothing on the computer like any door unlocked or anything like that,I checked if physically any door was open but nothing,I reset the program and sometimes now even after I drive and I put in park the doors did not unlock,the same when I drive I put in drive but doors did not lock,during driving locking and unlocking doors ,sounds and light are on! I noted that after raining the car starts to have problems,anyways is it any electrical rele' ,wiring,battery or .........please help me with some solutions to try out!\015 Posted / edited by AnonymousUser on : 15-01-2018

Answers :

This sounds like a typical BCM (body control module) problem. First thing would be to check the fuses. Pull them and visually check for bad ones. You'll know when you see one. Doing it this way lets you know if they're bad and by reinserting them you are making them have a better contact. This fixes 30% of problems. Next would be having a diagnostics run on the BCM. Checking for codes. This is helpful for pointing you in the right direction for electrical shorts. IE... Doors, lights ...This would need an electrical schematic to solve these problems. With the schematics you can also check wires for continuity. Which is important. If all wires check out, I would suspect the BCM is bad. This could also be checked with an Ohm meter. But you will need pinouts of the BCM. Pinouts tell you what wires go where and voltages supplies. If you are not familiar with an Ohm meter, I suggest that you find someone you can trust to diagnose the problem.
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