Chevrolet Colorado 2015–2021 — technical service bulletin
Bulletin 18NA307 · NHTSA communication 10199236 · issued May 24, 2021
Technical service bulletin
communication type
Electrical System
component
2015–2021
model years
14
vehicle entries
Official summary
This technical bulletin provides a procedure to locate and repair a possible short in the wiring harness located at the camshaft cover or the cylinder head.
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.