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TCM

This bulletin applies to 2018-2019 Chevy Traverse and Equinox, 2019 Blazer, 2017-2019 Cruze and Malibu vehicles, all equipped with a GF9T 45/50/60/65 transmission. A “rotational click” noise may be heard after the engine is shut off.

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Buzzing Suburban

This bulletin applies to 2009-2019 Chevy Suburban vehicles. A high-pitched whine or buzz noise may be heard with the key on and engine off, or for up to one minute after the engine has been shut off.

Sticking Mustang TCC

Some 2018 Ford Mustang GT vehicles equipped with a 10R80 automatic transmission and built on or before Nov. 20, 2017, may exhibit an illuminated MIL, with DTC P0741 and P1744 stored in the PCM or transmission control module (TCM).

Internal Mode Switch Glitch

This bulletin applies to 2009-2017 Chevy Equinox, Impala, Malibu and Traverse vehicles equipped with an automatic transmission. The MIL may be on and DTC P182E may be set as active or history in the transmission control module. The customer may also note that there is no PRNDL display.

Module Damage Caution

The bulletin discusses module damage from incorrect AFIT usage on GM vehicles equipped with direct fuel injection.

Spider Surprise

Chrysler is recalling certain 2017-2019 Fiat Spider 124 vehicles equipped with automatic transmissions, built from March 2016 to January 2019.

Surprise Downshift

Mazda has recalled certain 2016-2019 MX-5 Miata vehicles equipped with automatic transmissions, built between April 2015 and December 2018.

Corvette Trans Program

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.

Trans Relearn

This bulletin applies to 2015 GMC Yukon and Sierra vehicles. Customers may comment about firm 1-2 upshifts, firm 3-1 downshifts, engine rpm flare on tip-in and the MIL on. The technician may find DTCs P0606, P16F3 or P2818 set as current or history.

Shifty Mazda

Mazda announced a recall involving certain 2016-2019 MX-5 Miata vehicles equipped with automatic transmissions.