Chevrolet C Series 1998–1999 — technical service bulletin
Bulletin 866503A · NHTSA communication 603825 · issued Sep 1, 1998
Technical service bulletin
communication type
Engine and Engine Cooling
component
1998–1999
model years
32
vehicle entries
Official summary
Subject regarding obd ii diagnostic trouble code (dtc) p1404 (reflash vcm). *yc
Vehicles covered
- 1998 Chevrolet C Series
- 1999 Chevrolet C Series
- 1998 Chevrolet G Series
- 1999 Chevrolet G Series
- 1998 Chevrolet K Series
- 1999 Chevrolet K Series
- 1998 Chevrolet L Series
- 1999 Chevrolet L Series
- 1998 Chevrolet M Series
- 1999 Chevrolet M Series
- 1998 Chevrolet P Series
- 1999 Chevrolet P Series
- 1998 Chevrolet S Series
- 1998 Chevrolet T Series
- 1999 Chevrolet T Series
- 1999 Ford L Series
- 1998 GMC C Series
- 1999 GMC C Series
- 1998 GMC G Series
- 1999 GMC G Series
- 1998 GMC K Series
- 1999 GMC K Series
- 1998 GMC L Series
- 1998 GMC M Series
- 1999 GMC M Series
- 1998 GMC P Series
- 1999 GMC P Series
- 1998 GMC S Series
- 1999 GMC S Series
- 1998 GMC T Series
- 1999 GMC T Series
- 1998 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.