Chevrolet Repair Questions? Ask a Mechanic for Answers ASAP
This PI is being superseded to update model years and connector numbers. Please discard PIP3061E.
The following diagnosis might be helpful if the vehicle exhibits the symptom(s) described in this PI.
In "K" trucks with 246 and 263 transfer cases:
DTC C0327 stored in the TCCM only or C0327 in TCCM along with P0836 in TCM and P0500 in PCM.
In "T" trucks 126 and 226 transfer cases:
DTC C0327 with or without additional DTCs setting.
For "K" trucks with 246 and 263 transfer cases:
This information supplements TSB 03-04-21-001D to include additional diagnosis.
What is the procedure for replacing the encoder sensor and does the transfer case control module need reprogramming after the encoder sensor is replaced.
Important: For ease of reassembly, shift the transfer case to Neutral prior to removing any components.
Notice: Refer to Fastener Notice in the Preface section.
Tighten Tighten the screws to 2 N·m (18 lb in).
Tighten Tighten the screws to 3 N·m (26 lb in).
What is the procedure for Transfer Case Motor Replacement. I tried to open Transfer Case Encoder Motor Replacement but it said I was Not authorized. Also, how do you reprogram the TCCD if I need that done.
Notice: Use the correct fastener in the correct location. Replacement fasteners must be the correct part number for that application. Fasteners requiring replacement or fasteners requiring the use of thread locking compound or sealant are identified in the service procedure. Do not use paints, lubricants, or corrosion inhibitors on fasteners or fastener joint surfaces unless specified. These coatings affect fastener torque and joint clamping force and may damage the fastener. Use the correct tightening sequence and specifications when installing fasteners in order to avoid damage to parts and systems.
Tighten Tighten the bolts, in the sequence shown, to 20 N·m (15 lb ft).