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HOMESERVICE MANUALSCHEVROLET2008CHEVY EXPRESS G3500, VAN PASSENGER EXTENDEDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 37 (DATA COMMUNICATION SYSTEM)DIAGNOSTIC INFORMATION AND PROCEDURESDATA LINK REFERENCES
2008 Chevrolet Chevy Express G3500, Van Passenger Extended

Data Link References

2008 Chevrolet Chevy Express G3500, Van Passenger ExtendedSECTION Data Link References
WARNING: This page does not describe the selected car, but rather 8 other vehicles, including the 2007 GMC Yukon XL, 2007 GMC Yukon, 2007 Chevrolet Tahoe, 2007 Chevrolet Suburban, and 2007 Chevrolet Avalanche. However, it is still accessible from the selected car via links, so may be relevant.

This table identifies which serial data link that a particular module uses for in-vehicle data transmission. Some modules may use more than one data link to communicate. Some modules may have multiple communication circuits passing through them without actively communicating on that data link. This table is used to assist in correcting a communication malfunction. For the description and operation of these serial data communication circuits refer to Data Link Communications Description and Operation .

Data Link References

Control Module Data Link Type Diagnostic Procedure
Schematic Reference: Data Communication Schematics 
Amplifier Low Speed GMLAN Scan Tool Does Not Communicate with Low Speed GMLAN Device 
Auxiliary Body Control Module (XBCM) (Export only) Low Speed GMLAN Scan Tool Does Not Communicate with Low Speed GMLAN Device 
Auxiliary HVAC Control Module Low Speed GMLAN Scan Tool Does Not Communicate with Low Speed GMLAN Device 
Body Control Module (BCM)
  • High Speed GMLAN
  • Low Speed GMLAN
 Scan Tool Does Not Communicate with High Speed GMLAN Device 
Communication Interface Module (OnStar), w/UE1
  • High Speed GMLAN - pass through only
  • Low Speed GMLAN
 Scan Tool Does Not Communicate with Low Speed GMLAN Device 
Digital Radio Receiver (DRR), w/U2K Low Speed GMLAN Scan Tool Does Not Communicate with Low Speed GMLAN Device 
Driver Door Switch (DDS)
  • Low Speed GMLAN
  • Local Interconnect
  • Network (LIN)
 Scan Tool Does Not Communicate with Low Speed GMLAN Device 
Electronic Brake Control Module (EBCM) High Speed GMLAN Scan Tool Does Not Communicate with High Speed GMLAN Device 
Electronic Suspension Control Module (ESCM), F45, F55 High Speed GMLAN Scan Tool Does Not Communicate with High Speed GMLAN Device 
Engine/Powertrain Control Module (ECM/PCM) High Speed GMLAN Scan Tool Does Not Communicate with High Speed GMLAN Device 
Front and Rear Object Alarm Module Low Speed GMLAN Scan Tool Does Not Communicate with Low Speed GMLAN Device 
HVAC Control Module Low Speed GMLAN Scan Tool Does Not Communicate with Low Speed GMLAN Device 
Inside Rearview Mirror Low Speed GMLAN Scan Tool Does Not Communicate with Low Speed GMLAN Device 
Instrument Panel Cluster (IPC) Low Speed GMLAN Scan Tool Does Not Communicate with Low Speed GMLAN Device 
Inflatable Restraint Sensing and Diagnostic Module (SDM) Low Speed GMLAN Scan Tool Does Not Communicate with Low Speed GMLAN Device 
Memory Seat Module (MSM)/Driver Position Module (DPM) Low Speed GMLAN Scan Tool Does Not Communicate with Low Speed GMLAN Device 
Passenger Door Switch (PDS)
  • Low Speed GMLAN
  • Local Interconnect
  • Network (LIN)
 Scan Tool Does Not Communicate with Low Speed GMLAN Device 
Passenger Presence System (PPS) Low Speed GMLAN Scan Tool Does Not Communicate with Low Speed GMLAN Device 
Radio Low Speed GMLAN Scan Tool Does Not Communicate with Low Speed GMLAN Device 
Rear Heated/Vented Seat Control Module Low Speed GMLAN Scan Tool Does Not Communicate with Low Speed GMLAN Device 
Remote Function Actuator (RFA) Low Speed GMLAN Scan Tool Does Not Communicate with Low Speed GMLAN Device 
Theft Deterrent Module (TDM) Low Speed GMLAN Scan Tool Does Not Communicate with Low Speed GMLAN Device 
Transmission Control Module (TCM) High Speed GMLAN Scan Tool Does Not Communicate with High Speed GMLAN Device 
RENDER: 1.0x

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