GM Service Manual Online
For 1990-2009 cars only
Makes
🢒
GMC_Truck
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2008
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TopKick C-Series (Conventional) C4/C5
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Power and Signal Distribution
🢒 Data Communications
Power and Signal Distribution
All Description and Operation
Data Link Communications Description and Operation
Diagnostic Procedures
Data Link References
Diagnostic Starting Point - Data Communications
Scan Tool Does Not Communicate with Class 2 Device
Scan Tool Does Not Communicate with High Speed GMLAN Device
Scan Tool Does Not Communicate with J1939 Device
Scan Tool Does Not Power Up
Symptoms - Data Communications
Diagnostic Trouble Codes
DTC U0010
DTC U0073
DTC U0100-U0299
DTC U0294
DTC U1000 and U1255
DTC U1001-U1254
DTC U1300, U1301, or U1305
DTC U1800, U2105, U2106, or U2108
DTC U2100
DTC U2104
Electrical/Electronic Schematic Diagrams
Data Communication Schematics
Removal, Installation, and Replacement
Data Link Connector Replacement
Serial Data Gateway Module Replacement