Chevrolet Colorado 2015–2021 — technical service bulletin
Bulletin PIP5830 · NHTSA communication 10204457 · issued Nov 29, 2021
Technical service bulletin
communication type
Engine and Engine Cooling
component
2015–2021
model years
14
vehicle entries
Official summary
This Preliminary information communicates concerns created by an aftermarket ECM calibration installed by fleet companies. The Fleet companies install aftermarket ECM calibrations to limit the vehicle speed to approximately 70 mph and reduce the over all power output. This calibration also reduces the engine idle speed and may induce a vibration at idle. If the vehicle needs to be returned to factory specifications, the ECM must be replaced and programmed.
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.