PIT5209

File in Section:
Service Bulletin
Bulletin No.:
Date:
PIT5209
April, 2013
PRELIMINARY INFORMATION
Subject:
Unwanted Alarm Sounding (GM Accessory Inclination Sensor Mounting)
Models:
2007-2013 Cadillac Escalade Models
2007-2013 Chevrolet Avalanche, Silverado, Suburban, Tahoe
2007-2013 GMC Sierra, Yukon Models
The following diagnosis might be helpful if the vehicle exhibits the symptom(s) described in this PI.
Condition/Concern
Some owners may comment that for no reason the alarm will go active. This would normally occur after the vehicle
has been sitting awhile following a drive cycle. The sensor was originally positioned on the driver’s side lower HVAC
duct. With thermal cycling the duct could expand and contract enough that, depending on exact sensor location,
movement of the duct might cause the sensor to trip and activate the alarm.
Recommendation/Instructions
To verify the alarm was activated by the inclination sensor, use the Tech 2 and build as follows: Body > Body Control
Module > Data Display > Theft Data. View the three parameters for "CTD Trigger History" to see what triggered the
alarm. If the trigger is the inclination sensor, inspect the sensor's mounting location. If it is attached to the driver's
side lower HVAC duct, it will need to be relocated.
The location of the sensor placement has been updated to the top of the BCM bracket. See picture below. Relocate
the sensor to the top of the BCM bracket as shown in the attached:
2850628
Warranty Information
For vehicles repaired under warranty use:
Labor Operation
Description
Labor Time
*C9545
Relocate Inclination Sensor
0.5
* This is a unique labor operation for bulletin use only. It will not be published in the Labor Time Guide.
Please follow this diagnostic or repair process thoroughly and complete each step. If the condition exhibited is
resolved without completing every step, the remaining steps do not need to be performed.