Chevrolet Blazer 1996–2000 — technical service bulletin
Bulletin 990602012D · NHTSA communication 634218 · issued Apr 1, 2002
Technical service bulletin
communication type
Engine and Engine Cooling
component
1996–2000
model years
28
vehicle entries
Official summary
Subject regarding rust in cooling system, heater inoperative, blows cold air, engine overheats (flush cooling system). Nlm
Vehicles covered
- 1996 Chevrolet Blazer
- 1997 Chevrolet Blazer
- 1998 Chevrolet Blazer
- 1999 Chevrolet Blazer
- 2000 Chevrolet Blazer
- 1996 Chevrolet S10
- 1997 Chevrolet S10
- 1998 Chevrolet S10
- 1999 Chevrolet S10
- 2000 Chevrolet S10
- 1998 GMC Envoy
- 1999 GMC Envoy
- 2000 GMC Envoy
- 1996 GMC Jimmy
- 1997 GMC Jimmy
- 1998 GMC Jimmy
- 1999 GMC Jimmy
- 2000 GMC Jimmy
- 1996 GMC Sonoma
- 1997 GMC Sonoma
- 1998 GMC Sonoma
- 1999 GMC Sonoma
- 2000 GMC Sonoma
- 1996 Oldsmobile Bravada
- 1997 Oldsmobile Bravada
- 1998 Oldsmobile Bravada
- 1999 Oldsmobile Bravada
- 2000 Oldsmobile Bravada
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.