In 2005, Pontiac began phasing out the aged Grand Am and bringing in the new G6. In 2006, the G6 officially took the Grand Am's position in Pontiac's lineup. All trim levels of the 2006 G6, except the value leader trim level, came standard with a keyless entry system. This system used a remote to unlock and lock the doors, open the trunk and engage the G6's alarm. There are four main causes for the keyless entry remote not to lock or unlock the G6's doors.
Using a keyfob testing tool -- which can be rented for a small deposit from some auto parts stores -- determine if there is a signal coming from the remote. If the tester does not indicate a signal from the keyfob, replace the battery and retest the keyfob -- see the section titled "Remote Buttery" for additional information. If the remote continues to not lock or unlock the 2008 G6's doors after replacing the battery, replace the keyfob.
The 2008 G6's keyless entry remote uses a CR2032 battery as a power supply. As the remote ages, this battery loses its charge. The driver's information center displays a "KEY FOB BATT LOW" message prior to the complete failure of the battery. If the battery completely fails, the remote will not lock and unlock the G6's doors. Remove the battery by separating the two halves of the fob with a flat-head screwdriver and pulling the battery from its slot. Insert a new battery, positive side up, and press the two key fob halves together.
The 2008 G6's remote keyless entry system runs through the vehicle's body control module. This allows you to connect a scan tool with a keyfob function to check whether the correct signal is coming from the remote. Plug the scan tool into the diagnostic port under the dashboard and enter the keyfob program in the scan tool. Press the "Lock" or "Unlock" button on the keyfob and read the keyfob parameter on the scan tool. If the parameter does not match the button pushed, replace the keyfob.
The 2008 G6 has a remote control door lock receiver that receives the signal from the remote and converts the signal to the correct function. After converting the signal, the RCDLR sends the command to perform the selected function. If the remote and battery test as operating correctly, the RCDLR has failed and requires replacement.
