H2 V8-6.2L (2008)
Traction Control Module: All Technical Service Bulletins
Computers/Controls - Mutiple Malfunctions/DTC's Set
TECHNICAL
Bulletin No.: 08-08-49-010B
Date: July 22, 2008
Subject:
Loss Of High Speed GMLAN Communications, IPC Warning Lights On, DIC Messages, No Crank, IPC Gauge Drop or Fluctuation, Door Lock
Cycling, Hard Transmission Shift, DTCs U0073, U0100, U0101, U0102, U0109, U0121, U0132, U0140, U2100 Set (Inspect Identified Electrical
Connections and Wiring for Faults)
Models:
2008 HUMMER H2
Supercede:
This bulletin is being revised to update terminal part number information and location in Correction Step 1 (Update with asterisks). Please discard
Corporate Bulletin Number 08-08-49-010A (Section 08 - Body and Accessories).
Condition
Some customers may comment on one or more of the following symptoms:
^
Instrument panel gages drop or fluctuate.
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Multiple service messages displayed on the DIC (Drivers Information Center).
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Various instrument panel warning lights on.
^
Door locks cycle while driving.
^
No crank.
^
Vehicle shifts hard or defaults to 2nd or 3rd gear.
Upon investigation, the technician may find one or multiple communication codes, such as DTC U0073, U2100, U0100, U0101 U0102, U0109, U0121,
U0132, U0140 set as current or in history.
Correction
If you experience one or more of the symptoms above, please review the following areas for a possible concern.
1.
Inspect the EBCM connector for loose terminals or low pin retention at pins 8, 9, 23, and 24. These pins are for circuits 2500 and 2501 for high
speed GMLAN communications with the EBCM, TCM, and ECM. Please use the proper test tool when checking pin tension. The proper test tool
for this EBCM is J-35616-64B, which should be supplied in your terminal test kit. If the pins are loose or damaged, replaced all 4 pins with new
terminals (*part number # SAITS - A03T - M064 located in tray 14, position 24 of the GM terminal repair kit*).
2.
Inspect the transmission pass-through connector for loose or low pin retention at pins 10, 11, 13, and 14. Also make sure these pins are fully seated
into the connector. See photos above for location and photo that shows a terminal that was not fully seated into the transmission connector. Repair
