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Technical Service Bulletins of the 1999 GMC K1

There have been 2 technical service bulletins issued for the 1999 GMC K1.

1 1999 GMC K1 automatic transmission lever and linkage column shift TSB (Bulletin 990421004)

Bulletin Date: Aug. 1, 1999
Component: Automatic transmission lever and linkage column shift.
Bulletin Summary: Some pickups and full-size utility models with an automatic transfer case may exhibit a bump / clunk upon acceleration.
Vehicles covered in this TSB:
1999 Cadillac Escalade, 2000 Cadillac Escalade, 1998 Chevrolet K1, 1999 Chevrolet K1, 2000 Chevrolet K1, 1998 Chevrolet K2, 1999 Chevrolet K2, 2000 Chevrolet K2, 1998 GMC K1, 1999 GMC K1, 2000 GMC K1, 1998 GMC K2, 1999 GMC K2, 2000 GMC K2.

2 1999 GMC K1 driveline differential unit TSB (Bulletin 990421004)

Bulletin Date: Aug. 1, 1999
Component: Driveline differential unit.
Bulletin Summary: Some pickups and full-size utility models with an automatic transfer case may exhibit a bump / clunk upon acceleration.
Vehicles covered in this TSB:
1999 Cadillac Escalade, 2000 Cadillac Escalade, 1998 Chevrolet K1, 1999 Chevrolet K1, 2000 Chevrolet K1, 1998 Chevrolet K2, 1999 Chevrolet K2, 2000 Chevrolet K2, 1998 GMC K1, 1999 GMC K1, 2000 GMC K1, 1998 GMC K2, 1999 GMC K2, 2000 GMC K2.

3 1999 GMC K1 seats TSB (Bulletin 990850004)

Bulletin Date: Apr. 1, 1999
Component: Seats.
Bulletin Summary: Subject regarding seat noise / vibration - creak in front seat cushion, rattle / vibration in 40% front seat, jingle in 20% folding center seat.
Vehicles covered in this TSB:
1999 Chevrolet C1, 1999 Chevrolet K1, 1999 Chevrolet Sierra, 1999 Chevrolet Silverado, 1999 GMC C1, 1999 GMC K1, 1999 GMC Sierra, 1999 GMC Silverado.


Also see GMC vehicle common problems.