Bulletin No.: 08-08-52-002
Date: February 27, 2008
Diagnostic Information for Inoperative Remote Vehicle Start Models:
2005-2008 GM Passenger Cars and Light Duty Trucks (including Saturn)
2005-2008 HUMMER H2 with Remote Keyless Entry RPOs AP3 or AP8
Information on Hood Latch Switches
One of the many components involved in the Remote Vehicle Starting System
is the Hood Latch Switch. The state of this switch is checked by the BCM during a remote vehicle start request and the component must function properly in order for the vehicle to commence a remote start event. During the infancy of this option (RPO AP3/AP8) parts return analysis showed a significantly shorter than expected component life for the Hood Latch Switch shared across many different GM vehicles.
The switches currently being factory installed, and sent as service replacement parts, are vastly improved in design and suitably robust. Most hood latch switches currently returned under warranty are analyzed and determined to have no trouble found (NTF). It is understandable and desirable that technicians gain familiarity with the vehicles they service on a daily basis, however it is required that technicians follow Strategy Based Diagnostics before replacing this switch.
The ONLY way to repair or replace a hood latch switch is to replace the LATCH ASSEMBLY. The switch CANNOT be serviced separately from the latch and is NOT AVAILABLE from GMSPO. Any effort to remove the switch from the latch will permanently damage the switch and void the warranty coverage of that part.