This bulletin applies to 2015-2021 Chevy Colorado trucks. The brake booster may have a vacuum leak along with DTC C0299 stored. Vacuum may be leaking into the oil booster. Inspect inside the vacuum hose and booster for a sticky substance on the rubber. This is an indication that the vacuum pump is leaking oil. Replace the pump and hose, and if needed, replace the booster.
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.
