Chevrolet Blazer 1996–1998 — technical service bulletin
Bulletin 990602012A · NHTSA communication 609717 · issued Jan 1, 2000
Technical service bulletin
communication type
Engine and Engine Cooling
component
1996–1998
model years
15
vehicle entries
Official summary
Some customers may comment that the heater is inoperative, blows cold air, engine may exhibit an overheat condition or the coolant reservoir has rust in it. *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.