Drivetrain - Service 4WD Message/DTC's Set/4WD Inop.
Bulletin No.: 06-04-21-002Date: June 08, 2006
TECHNICAL
Subject:
Service 4WD/Traction Off Message Displayed, Traction Off Light Illuminated, Transfer Case Selector Switch Inoperative, DTCs C0276 & C0327 Set (Inspect Wiring, Grounds and Replace Transfer Case Actuator, if Necessary)
Models:
2006 HUMMER H3
Condition
Some customers may comment on the "Service 4WD" and "Traction Off" messages being displayed. Also, the Traction Off light will be illuminated and the transfer case selector switch will be inoperative. Upon investigation, the technician will find DTCs C0327 and C0276 set.
This can be a very intermittent condition and may reset itself with subsequent key cycles.
Cause
The cause of this condition may be from the encoder sensor within the transfer case actuator that has malfunctioned.
Correction # 1
Inspect all transfer case wiring, power, grounds and connectors per current SI documentation. Look for chaffed wiring, backed out pins, unseated connectors and water intrusion. Inspect the module ground for cleanliness and tightness. If the wiring checks out to be good, proceed to Correction # 2 below.
Correction # 2
Replace the transfer case actuator with new P/N 19151453, using the replacement procedure in SI.
Parts Information
Warranty Information
For vehicles repaired under warranty, use the table.
Important:
Only one of the labor operations may be submitted for the warranty claim.
Disclaimer