Chevrolet Colorado 2004–2005 — technical service bulletin

Bulletin 3174A · NHTSA communication 10017147 · issued Oct 26, 2005

Technical service bulletin

communication type

Seats

component

2004–2005

model years

vehicle entries

Official summary

Hvac, passenger lumbar and/or passenger heated seat inoperative. *tt

Vehicles covered

2004 Chevrolet Colorado
2005 Chevrolet Colorado
2004 GMC Canyon
2005 GMC Canyon

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.