Chevrolet Chevrolet Truck 1998 — technical service bulletin
Bulletin 210201 · NHTSA communication 617621 · issued Feb 21, 2001
Technical service bulletin
communication type
Power Train
component
1998
model years
2
vehicle entries
Official summary
Subject regarding investigation of automatic transmission oil leaks on 1998 and newer light duty trucks with 4l80e transmission. *tt
Vehicles covered
What a TSB means. Technical service bulletins are repair guidance manufacturers send to dealers — they are not recalls, and repairs are not automatically free (warranty extensions are an exception worth checking). The full document is available via NHTSA’s vehicle lookup.