C0398

Equipped with Switch activated transfer case (RPO NQH)

NHTSA 10201134 ↗ NHTSA 10201135 ↗

Equipped with Switch activated transfer case (RPO NQH)

NHTSA 10201134 ↗ NHTSA 10201135 ↗

Range Actuator Position – Range Position Correlation

NHTSA 10190925 ↗

CADILLAC, CHEVROLET, GMC

This Preliminary Information communication provides information to the technician about vehicles that may have a service 4 wheel drive message and the transfer case is stuck in neutral. Technician may find Diagnostic Trouble Code C0398 set in the Transfer Case Control Module. Technician should verify if the vehicle was dinghy to…

CADILLAC, CHEVROLET, GMC

28770 - SUB A ?Service 4WD? message may be displayed on the Driver Information Center and DTC C0398 may be set. Concurrently, the vehicle is permanently locked in 4HI and cannot be shifted shift out of it while the code is present. If the code is cleared, this scenario may repeat if the transfer case is in ?Auto? mode and driven…

CHEVROLET, GMC

THIS ENGINEERING INFORMATION BULLETIN IS REQUESTING INFORMATION FROM THE DEALERS ON A CUSTOMER CONCERN THAT A SERVICE 4WD MESSAGE DISPLAYED ON THE DIC AND DTC C0398 SET WITHIN THE TRANSFER CASE CONTROL MODULE.

CHEVROLET, GMC

Engineering Information - Service 4WD Messange Displayed and DTC C0398 - Equipped with Switch activated transfer case (RPO NQH)