2006 grand am starts by its self won't shut off
What after market products do you have , if any ? Have you done any electrical repairs ? Could be a ignition switch problem , GM has had switch problems for sure . The starting of your vehicle is computer controlled by the BCM - body control module . The ignition switch could be sending a wrong input to the BCM ,causing it to start .Power to many of this vehicle's circuits are controlled by the module that is designated the power mode master (PMM). This vehicle PMM is the body control module (BCM). The PMM controls which power mode (Run, Accessory, Crank, Retained Accessory Power, or Off) is active.
Serial Data Power Mode
On vehicles that have several control modules connected by serial data circuits, one module is the power mode master (PMM). On this vehicle, the PMM is the body control module (BCM). The PMM receives 3 discrete ignition switch signals to differentiate which power mode will be sent over the Serial Data circuits. The table below illustrates the state of these inputs in correspondence to the ignition switch position: If this came to the dealer I work at the first thing I would check is the ignition switch inputs to the BCM . I would use Tech 2 , GM factory scan tool .
Relay Controlled Power Mode
The body control module (BCM) uses the discrete ignition switch inputs ignition 1, ignition 3 and crank to distinguish the correct power mode. Once the BCM has determined the power mode selected by the vehicle operator it will energize the Ignition relay, Run relay and retained accessory power (RAP) relay, depending on which power mode is selected.
good luck !
on Feb 13, 2017