Ping in Chevy Colorado
This bulletin applies to 2015-2016 Chevy Colorado trucks. Customers might complain about chugging, shuddering and/or lack of power when accelerating at speeds of 12-15 mph in second gear, or when accelerating at speeds of 30-40 mph in 6th gear with no downshift, or spark knock/ping noise under light acceleration or when climbing a hill under load. The technician may find DTC P0326 (knock sensor performance bank 1) set in the ECM as history. This condition might be caused by an anomaly in the ECM and the transmission control module.
It is important that both the ECM and TCM are updated with the latest software. Not updating both modules will result in incompatibility and additional undesired vehicle performance. Both modules must be programmed sequentially to the latest software calibration.
About the Author
Information courtesy of Mitchell 1
Information for Technical Service Bulletins comes from ProDemand, Mitchell 1's auto repair information software for domestic and import vehicles. Headquartered in San Diego, Mitchell 1 has provided quality repair information solutions to the automotive industry since 1918.
Mike MavrigianMike Mavrigian
Motor Age Editor
Mike Mavrigian has written thousands of automotive technical magazine articles involving a variety of specialties, from engine building to wheel alignment, and has authored more than a dozen books that crisscross the automotive spectrum. Mike operates Birchwood Automotive, an Ohio shop that builds custom engines and performs vintage vehicle restorations. The shop also features a professional photo studio to document projects and to create images for articles and books.
