Question about 2001 Pontiac Montana
I have a few suggestions on where to start but the honest answer is that this clearly sounds like an electrical issue and these can be a real pain to trace down. It definantly sounds like the problem is in the key less entry system for the car or the wiring coming off the actuator. .
If this key less entry system was not originally installed on the car by pontiac then your first course of action is going to be to locate the control module. Typically these are installed under the drivers side of the dash. Once located you need to start by making sure that all of the wire connections are clean and tight and there are no bare parts of the wires showing. Then you are going to need to trace the wires back to where it taps into the door lock actuators wiring behind the door panel for the drivers door. (I'm thinking that there is a short that is hitting metal and completing the circuit causing actuator engagement). If all that checks out good then you have an internal module malfunction and are going to have to have it replaced.
If this was the original stuff that was made by pontiac then it gets considerably more difficult. Proceed as described for the aftermarket stuff but then you are looking. at at a more expensive module. I hate to say it but a dealer should be able to go in with their scan tool and check for problems with the key less entry module. That is going to require going to a dealership and paying a diagnostic fee. But if your inspection doesn't turn anything up that is the only way I know to accurately determine if the module has failed. I hope this at least gave you an idea what you are looking for. These issue are never easy to find but taking your time and you can work through it. Good Luck.
Posted on Mar 27, 2011
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Posted on Jan 02, 2017
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