Clearing C0398 From Transfer Case Control Module (PIP5362)

Publication date: 2016-01-11
Reference number: PIP5362

CLEARING C0398 FROM TRANSFER CASE CONTROL MODULE

TECHNICAL SERVICE BULLETIN

Reference Number(s): PIP5362, Date of Issue: Jan 11, 2016

Affected Model(s):

2014-2016 Chevrolet Silverado 2015-2016 Chevrolet Suburban Tahoe 2014-2016 GMC Sierra 2015-2016 GMC Yukon 2015-2016 Cadillac Escalade 2016 Chevrolet Colorado 2015-2016 GMC Canyon Equipped with NP0, NQH or NQ6 transfer case

SERVICE INFORMATION

The following diagnosis might be helpful if the vehicle exhibits the symptom(s) described in this PI.

CONDITION/CONCERN

Dealers may notice that C0398 will not clear from the TCCM when attempting to clear with GDS on the first attempt. When his happens some dealers are replacing the TCCM or reprogramming the TCCM, often with the same software.

RECOMMENDATION/INSTRUCTIONS

Do not replace or reprogram the TCCM because C0398 will not clear when requested to clear the first time. At the time this pi was written it takes two consecutive clearing actions to get the C0398 to clear from the TCCM. So you will have to select clear DTCs from module/vehicle and after GDS cycles through the clearing process and C0398 is still present then you will have to select clear DTCs again and that should remove the DTC from the module.

Please follow this diagnostic or repair process thoroughly and complete each step. If the condition exhibited is resolved without completing every step, the remaining steps do not need to be performed.