Electrical Problems = to trunk randomly opening??

Messages
11
Location
Chicago
Hello, My car flooded last summer which lead to a mess of electrical problems. After getting a new battery, changing the front seats, and adding some new wiring I have fixed every problem except one. Just about every time you open the driver or passenger door, the trunk pops open. Sometimes it does this when you close the door as well my trunk will be open over night (not good as you can imagine). I was wondering if anyone else has experienced this issue and hopefully it's something I can fix on my own. It is a 2000 pontiac bonneville ssei. Any suggestions would be greatly appreciated
 
Messages
17,501
Location
Clovis, CA
You have a short to ground in that circuit. If the BCM was bad, the trunk wouldn't open at all. In the meantime, disconnect the electrical harness that goes to the trunk latch solenoid and just use your key to open the trunk.
 

Tzu

Messages
363
Location
near Buffalo, NY
The only thing I heard is that buying and programming a BCM to your car's VIN can get expensive. I would check any electrical grounds you can see and make sure they look clean and not corroded, and apply a dielectric grease over them for protection. I think the BCM is located under the dash on the drivers side, so if water went that deep, it could be a problem. Good luck.
Originally Posted By: jburkhard2010
I've heard BCM and that's what i was afraid of. I was hoping that there was something else I could do
 

jburkhard2010

Thread starter
Messages
11
Location
Chicago
Yes, so if I remove the fuze for the trunk then it should only open with the key correct? I'm not sure why I didn't think to try this before.
 
Messages
17,501
Location
Clovis, CA
Mine has the opposite problem, the trunk latch solenoid is burned out so I can't open the trunk with the remote. I disconnected the harness plug to verify power to the solenoid with a test light.
 
Messages
3,590
Location
Ohio
Originally Posted By: michaelluscher
specifying the year make and model would help quite a bit
He did. It's a 2000 Pontiac Bonneville SSEi.
 
Messages
4,922
Location
Lima, Ohio, USA
Originally Posted By: michaelluscher
specifying the year make and model would help quite a bit
he did. Last line, 2000 Pontiac Bonneville ssei. If this ever happend to me, i'd just be SOL. there is no Key lock for the trunk on my sable. it's only via the electric motor. (in fact there are only 2 key cylinders on the whole car. Ignition, and Drivers Door.)
 
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