This bulletin applies to 2009-2018 Chevy Impala models equipped with automatic transmissions. Some customers may comment that the MIL lamp is on. In “rare” cases, they may also note that there is no PRNDL display.
This bulletin applies to 2015-2016 Corvette models equipped with an 8L90 transmission. The customer may comment on firm garage shifts, Park to Drive or Park to Reverse, after the vehicle has been sitting for several hours with the engine off, and/or a clunk noise that occurs as the engine starts or immediately after the engine starts, along with an illuminated MIL. DTC P16F3 may be found as an active or history DTC.
This bulletin applies to 2015-2017 Chevy City Express vans. Some customers may comment on a clicking noise originating from the front axle area during takeoff/acceleration. This may simply be due to a lack of grease on the hub bearing surface.
On some 2014-2017 Chevy Corvette models, cracks on the top surface of the left fuel tank fuel pump module flange may cause a fuel odor or a loss of fuel on the ground. A check engine light may illuminate if the fuel tank is less than half full.
This bulletin applies to 2010 – 2017 Chevy Equinox and GMC Terrain vehicles. Any combination of the following DTCs may be present:
This bulletin applies to 2016-2019 Chevy Camaro vehicles equipped with a 2.0L or 2.5L engine. An engine oil leak may be found from the side of the engine block, near the starter. The condition may be caused by porosity in the cast engine block at a bed plate bolt hole location.
This bulletin applies to 2014-current Chevy Camaro vehicles equipped with a 6.2L supercharged engine. Customers may experience a rattling or knocking noise at mid-to-high mph, and at idle. A screeching noise may also be heard at mid-to-high engine speed, usually when cold.
This bulletin applies to 2014-2015 Chevy Cruze vehicles equipped with a diesel engine. Some customers may comment on the MIL being illuminated. The technician may find DTC P22FA set current or in history. This condition may be caused by the nitrogen oxide sensor (NOX) covered with diesel particulates (soot).
Some owners of 2014 Chevy Silverado 1500 vehicles may comment about a “Service Stabilitrac” message in the driver information center. During diagnosis, the technician may find DTC C0196-5A set in the ECM.
Several GM vehicle models may feature two distinctively different-looking per-cylinder valve-cover-mounted ignition coils. This is due to a supplier difference and, according to GM, does not affect performance or serviceability.
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