Chevrolet Trax: Onstar stolen vehicle slowdown active
Diagnostic Instructions
NOTE: This procedure
is not used in Brazil.
- Perform the Diagnostic System Check - Vehicle prior to using this
diagnostic procedure.
- Review Strategy Based Diagnosis for an overview of the diagnostic
approach.
- Diagnostic Procedure Instructions provides an overview of each
diagnostic category.
Circuit/System Description
When a remote slow-down request is sent from OnStar, the Telematics
Communication Interface Control
Module sends a serial data message to the engine control module (ECM) indicating
that reduced vehicle speed
has been requested. Once the request is active, the ECM begins reducing engine
torque to match requested
vehicle speed and the REDUCED ENGINE POWER message is displayed.
Reference Information
Schematic Reference
OnStar/Telematics Schematics (Encore) , OnStar/Telematics Schematics (Trax)
Connector End View Reference
WIRING SYSTEMS AND POWER MANAGEMENT - COMPONENT CONNECTOR END VIEWS -
INDEX - ENCORE WIRING SYSTEMS AND POWER MANAGEMENT - COMPONENT
CONNECTOR END VIEWS - INDEX - TRAX
Description and Operation
Remote Vehicle Speed Limiting Description and Operation
Electrical Information Reference
- Circuit Testing
- Connector Repairs
- Testing for Intermittent Conditions and Poor Connections
- Wiring Repairs
Scan Tool Reference
Control Module References for scan tool information
Circuit/System Verification
- Verify the vehicle is not in the OnStar initiated Stolen Vehicle
Slowdown mode. This can be
accomplished by verifying the scan tool Telematics Enhanced Service
Immobilization parameter is No.
- If the scan tool Telematics Enhanced Service Immobilization parameter
is Yes
- Perform the Remote Vehicle Speed Limiting Reset procedure with the scan
tool.
- Press the blue OnStar button and inform the advisor that you need to be
transferred to the stolen
vehicle team to update the vehicle account.
- If the scan tool BCM Telematics Enhanced Service Immobilization
parameter is No
- All OK.
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THEFT DETERRENT MODULE REPLACEMENT (ENCORE)
Fig. 3: Theft Deterrent Module (Encore)
Theft Deterrent Module Replacement (Encore)
THEFT DETERRENT MODULE REPLACEMENT (TRAX)
Fig. 4: Theft Deterrent
IMMOBILIZER DESCRIPTION AND OPERATION
Fig. 5: Immobilizer Diagram Without BTM
The immobilizer system functions are provided by the body control module (BCM)
and the engine control
module (ECM), as
SEE MORE:
All seating positions in the vehicle
have a lap-shoulder belt.
The following instructions explain
how to wear a lap-shoulder belt
properly.
Adjust the seat, if the seat is
adjustable, so you can sit up
straight. To see how, see "Seats"
in the Index.
Pick up the latch plate and pull
the b
SCHEMATIC WIRING DIAGRAMS
HVAC WIRING SCHEMATICS (ENCORE)
Power, Ground, and Blower Motor
Fig. 1: Power, Ground, and Blower Motor
Mode and Temperature Control Actuators
Fig. 2: Mode and Temperature Control Actuators
Compressor Controls
Fig. 3: Compressor Controls
HVAC WIRING SCHEMATICS (TRAX)