2nd Gen Non-Engine/Transmission Key Fob Malfunction

[blake underwood]

Locked the '02 tonight w/ the key fob and when I did it unlocks, and keeps doing so. It also keeps locking/unlocking while I sit in the truck. I changed the batteries, but the problem is still their. This has never happened before and the truck came stock w/ the fob, so I don't know what's wrong w/ it ???

 

[SS]

Blake - sounds a lot like this TSB, but it's not shown for 2002??



TSB 08-041-00

All Intermittent locking/unlocking of doors without activating the door lock switch.

This bulletin applies to vehicles equipped with vehicle theft security system (sales code LSA).



The door locks will intermittently lock and/or unlock without any activation of the power door lock switch or a clicking sound may be heard coming from the power door locks (repeated locking or repeated unlocking). The condition may occur more frequently in damp conditions such as driving the vehicle in the rain or taking the vehicle through a car wash.



Vehicles that demonstrate this condition may have water weeping into the door/liftgate lock cylinder switches causing the switch to intermittently short across the internal circuit. This in turn may signal the Central Timer Module (CTM) to activate the power door locks. Because of the nature of this problem it is extremely difficult to diagnose this condition. Customers that indicate their doors intermittently lock and unlock without having the door lock switch activated or customers that indicate they hear a repeated clicking noise coming from the door locks should have the repair procedure performed on their vehicle.