Apparently, General Motors does not endorse, support or acknowledge the need for fuel injector cleaning as a preventive maintenance procedure. According to GM, fuel injector cleaning is approved only when performed as directed by a published GM driveability or DTC diagnostic service procedure.
Owners of 2007-2011 Cadillac CTS, SRX or STS models may comment about a check engine light on during or after a crank-no-start event or a hard start/extended crank. A DTC P0336 may be stored.
This bulletin applies to 2013 Buick Enclave vehicles. The SES light may be on with misfires and any of the following injector-related codes:
This bulletin applies to 2014 Dodge Avenger models equipped with a 3.6L engine. According to Chrysler, a “small number” of customers may experience a MIL on, and the technician may find DTC P0204 set (fuel injector 4 circuit/open).
This bulletin released by BMW addresses the issue of potential engine hydraulic lock caused by a fuel injector that is stuck in the open position, where the engine will mo longer turn over due to liquid fuel trapped in the cylinder.
Some 2011-2012 Ford F-Super Duty vehicles equipped with a 6.7L diesel engine built on or before 2-12-12 may exhibit a run-rough and/or misfire concern with or without DTCs P0300, P0301, P0302, P0303, P0304, P0305, P0306, P0307 and P0308.
Owners of a 2005 Audi A4 Cabriolet may complain of a long cranking engine at operating temperature. No DTC may be stored in ECM memory.
2011-2012 Ford F-Super Duty vehicles equipped with a 6.7L diesel engine may exhibit DTC P1291 and/or P1292 due to an internally shorted fuel injector. An internal short in a fuel injector may be caused by the fuel being contaminated with diesel exhaust fluid (DEF) or by fuel gelling.
This bulletin addresses concerns for rough running, surging and misfires on 2004-2005 GMC Silverado, Sierra, Kodiak and Topkick vehicles equipped with a 6.6L engine.
Some 2011-2012 Ford F-Super Duty vehicles equipped with the 6.7L diesel engine built on or before 2-12-12 may exhibit a runs-rough and/or misfire concern with or without DTCs P0300, P0301, P0302, P0304, P0305, P0306, P0307 and P0308.