The locks keep switching on and off and when put into park they are not always opening so if i shut the car off and unlock the door manually when i return to start the car it will not start. i have to get the car into accesory mode take it out of gear so the locks will go to open then re try to start, the car will rev on its own and the locks will randomly start unlocking and locking several times ..help?
This problem sounds alot like a bad switch input to one of the modules ! DDM - driver door module , BCM - body control module . Do you know anything about automotive electronics ?
Power Door Lock Operation
The vehicle is equipped with power door locks. Each lock actuator is powered and controlled by the door module mounted in the individual door. The driver door module (DDM) is the master control for the door lock system but the rear integration module (RIM) determines when the lock functions are permitted.
The passenger front door interior lock switch is wired to the passenger front door module (PDM). The driver door interior lock switch is wired to the driver door switch assembly (DDSA). Interior lock switches are not provided for the rear doors. The DDSA and the PDM send the lock switch requests to the driver door module (DDM) over the power door serial data circuit. The DDM then sends the lock requests to the RIM over the Class 2 serial data circuits.
The door lock operation modes are controlled by the RIM. The RIM examines the requested function from the DDM, or the remote function actuator (RFA), as well as the transmission shift selector position and the ignition switch position information available over the Class 2 serial data circuits. If the RIM determines that a lock or unlock function is permitted, it sends a class 2 message back to the DDM commanding the DDM to perform that function. The DDM then sends commands to the rest of the door modules via the power door serial data circuit to implement the selected locking function.
The automatic door lock system provides for locking or unlocking all or one of the doors when shifting the transmission in and out of PARK, or, when turning the ignition key to the OFF position. This system is commanded according to the information stored in the RIM. The RIM receives the features selected by the driver from the driver information center (DIC). The RIM commands the driver door module (DDM) which in turn commands the individual passenger door modules. For customized selections available and programming instructions, refer to: Personalization Description and Operation in Personalization.
Looking at scan data for input sensors ,switches on a scan tool should be the first step in diagnosing this problem or using a lab scope . Your best bet ,take it to a qualified repair shop .
Do you know what DTC'S are ? diagnostic trouble codes !
DTC B3377, B3382, B3387, B3392, B3397, B3452, B3457, B3462, B3467, B3472, B3477, B3482, B3517, or B3522
The switch that failed and generated this diagnostic trouble code (DTC) is part of the driver door switch assembly (DDSA). The DDSA contains a microprocessor which takes the signal generated by this switch and assigns a digital message to it. The DDSA then sends this message over a power door serial data circuit to the driver door module (DDM).
It's probably something on the lines as in these videos , but without the proper testing equipment you could spend alot of money replacing parts and still not fix the problem , your best bet ,find a guy like the guy in the video !
Door Locks Go Crazy 1
Door Locks Go Crazy 2
Door Locks Go Crazy 3
SOURCE: 1998 Pontiac Firebird Door Schematics
If you have shaved door handles, usually there is a manual opener somewhere close. Some people install them under the car so it can be popped with your foot or sometimes they're located in the wheel well.
SOURCE: Door Ajar Light On, All Doors Closed
not sure what to say but check recall on your vehicle might be a wide problem...could get fixed for free
SOURCE: Trunk wont open where is emergency switch inside trunk
I had the same problem as you. Take out the back seat and there is a large access hole to the interior. There are two bolts that are fairly easy to get to. Remove them and the truck latch is removed from the lid and trunk will open.
SOURCE: 2004 Pontiac Grand Prix: Just started having
These cars have a body control module which could be faulty,have a mechanic check this out.
SOURCE: major power window problems. 2000 pontiac bonneville
I had this problem where only the drivers door power equipment works.
It is caused by a splice under the driver's seat. Spice #S302 where the
input from the drivers door module to the other door modules connects.
It is one of those cheap *** splice that should be outlawed. Moisture
gets in it and corrodes. Cut back the wires till you get the good stuff
and redo it the right way.
Splice S302 can be found under the carpet about six inches before where
the wires go up to the drivers seat. It is in a plastic wrap and tape.
I believe the wires for the window are brown and white.
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The automatic transmission shift lock control switch
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The brake to shift relay
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The rear integration module (RIM)
With the ignition in the ON position, battery positive voltage is supplied to the brake to shift relay coil. When the RIM energizes the brake to shift relay, the brake to shift relay switch contacts close suppling battery voltage to the automatic transmission shift lock control switch. The circuit continues through the normally --closed switch to the automatic transmission shift lock control solenoid. The permanently grounded solenoid is energized. This locks the shift linkage in the PARK position. When the driver presses the brake pedal, the contacts in the automatic transmission shift lock control switch open. This causes the automatic transmission shift lock control solenoid to release. This allows the shift lever to move from the PARK position.
Shift Lever Does Not Move with Brake Pedal Depressed ?
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