Chevrolet Colorado 2023–2026 — technical service bulletin
Bulletin PIT6510 · NHTSA communication 11031947 · issued Apr 25, 2026
Technical service bulletin
communication type
Unknown OR Other
component
2023–2026
model years
8
vehicle entries
Official summary
This PI describes the repairs to perform if P0446 set and water and/or ice is found on the fuel pump module.
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.