GMC Envoy 1998 — technical service bulletin
Bulletin 98056 · NHTSA communication 615112 · issued Oct 1, 1998
Technical service bulletin
communication type
Exterior Lighting
component
1998
model years
1
vehicle entries
Official summary
Product recall campaign to install a new body control module and reprogram the vehicle with a new calibration that will turn the daytime running lights off when the turn signal or hazard warning flasher is activated. *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.