This bulletin applies to 2016-2017 Chevy Colorado and Express vehicles equipped with a 2.8L diesel engine. Some customers may comment about a whiny noise during acceleration, in gear or neutral. The condition may be caused by a bent turbocharger compressor blade. If a bent blade is found, replace the turbo.
Use the VIN, service manual and GM Electronic Parts Catalog to determine which turbocharger is correct for the vehicle. The choice is P/N 55486936 or 55496255.
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 Mavrigian has written thousands of automotive technical magazine articles involving a variety ofspecialties, 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.
