Some owners of 2009 Buick Enclave; Cadillac Escalade, Escalade ESV, Escalade EXT; Chevy Avalanche, Silverado, Suburban, Tahoe, Traverse; GMC Acadia, Sierra, Yukon, Yukon Denali, Yukon XL, Yukon Denali XL; or Saturn Outlook vehicles may comment that the rear parking assist system is inoperative. They may also state that either “Park Assist Off” or “Service Park Assist” messages may be displayed.
Some 2011 Buick Regals equipped with the AF40-6 automatic transmission may experience a “loss of movement” or no transmission engagement in Drive or Reverse gears and may only have a creep effect as engine rpm is increased.
Due to the uniqueness of the ignition/door lock key (2011 Buick Regal, 2010-2011 Buick LaCrosse, 2010-2011 Chevy Camaro and Equinox, 2011 Chevy Cruze, 2010-2011 GMC Terrain and 2008-2009 Pontiac G8, special equipment is required to cut a key. A cut/coded key is available through GM CC&A if you don’t have this equipment.
If a GM product equipped with a toothed crankshaft timing reluctor wheel experiences DTC P0016, P0017, P0018, P0019, P0008 and/or P0009, the reluctor wheel for the crankshaft position sensor may have moved. If the reluctor wheel has moved, GM recommends replacing the crankshaft.
A harsh shifting condition on select GM vehicles may be due to a broken 35R clutch wave plate. Applicable vehicles include 2007-2009 Saturn Aura and Outlook, 2008-2009 Saturn Vue, 2007-2009 GMC Acadia, 2007-2009 Pontiac G5, 2008-2009 Pontiac Torrent, 2008-2009 Buick Enclave, 2008-2009 Chevrolet Equinox and Malibu, and 2009 Chevrolet Traverse (all equipped with the 6T70/75 6-speed automatic transmission.
This TSB actually applies to 2011-2012 Saab 9-5, as well as 2010-2012 Buick LaCrosse and 2011-2012 Buick Regal vehicles. The ABS MIL may illuminate (all four wheel speed sensor DTCs C0035, C0040, C0045 and C0050 with symptom byte 06 (shorted) may have set together.
Some customers may complain of an SES light, engine misfire and/or ticking noise. This may be the result of an AFM lifter that unlocks as soon as the engine is started or one that is mechanically collapsed/stuck.
On rare occasions, customers may complain of excessive engine oil consumption and/or blue exhaust smoke. This applies to a number of GM vehicles.
Some customers may complain about a clicking type noise from the front of the vehicle when shifting between reverse and drive, or during hard acceleration.
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