GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 HUMMER 🢒 2006 🢒 H3 🢒 Bulletins 🢒 Service Four Wheel Drive (4WD) Light On, Diagnostic Trouble Codes (DTC) B0790, B2725, C0359 (Reprogram Transfer Case Control Module (TCCM))

Service Four Wheel Drive (4WD) Light On, Diagnostic Trouble Codes (DTC) B0790, B2725, C0359 (Reprogram Transfer Case Control Module (TCCM))

Subject:Service Four Wheel Drive (4WD) Light On, Diagnostic Trouble Codes (DTC) B0790, B2725, C0359 (Reprogram Transfer Case Control Module (TCCM))

Models:2006 HUMMER H3
with Borg Warner Transfer Case (RPOs NR4 or NR6)
Built Prior to VIN Breakpoint 68139888 (with RPO G94) or 68140143 (without RPO G94)


Condition

Some customers may comment that the Service 4WD light is on and 4WD is inoperative.

Cause

DTCs may be set due to a TCCM calibration issue. If these codes set, the TCCM will disable 4WD.

Correction
  1. With a scan tool clear the TCCM DTCs.
  2. Reprogram the TCCM with TIS version 8.0 or later released to dealers on 8/7/05. Refer to Service Programming System (SPS) (SI Document ID# 1265170).
  3. Road test the vehicle.
  4. If the codes reset, refer to the appropriate Service Information below for diagnosis and repair:
    5. • B0790 -- SI Document ID# 1528137
    • B2725 -- SI Document ID# 1528138
    • C0359 -- SI Document ID# 1528144

Warranty Information

For vehicles repaired under warranty, use:

Labor Operation

Description

Labor Time

K4121

Module, Transfer Case Control - Reprogram

0.4 hr