Subject: | Discontinue Flushing and Replacing Transfer Case Fluid Due to Bump/Clunk Concern |
Models: | 1998-2000 Chevrolet and GMC K1-2 Pickup and Full-Size Utility Models |
1999-2000 Cadillac Escalade |
with NP246 Automatic Transfer Case (RPO NP8) |
This bulletin is being issued to cancel Corporate Bulletin Number 99-04-21-004. Please discard Corporate Bulletin Number 99-04-21-004 (Section 04 - Driveline/Axle).
This bulletin is being issued to advise dealerships to no longer flush and replace the transfer case fluid when a customer comments about a "bump" feeling when the vehicle accelerates from a stop.
When Corporate Bulletin Number 99-04-21-004 was issued, a new transfer case fluid had just been developed to correct this condition. Currently, a nickel-plated slip yoke is being developed that will correct this condition. A new bulletin will be issued as soon as parts are available.
Please share the information in this bulletin with customers who may inquire about this condition.