15178A

Bulletin number

15178A

Component

Power train: automatic transmission

Summary

15178a - service update (revised parts information, service procedure and warranty transaction information). This bulletin provides a service procedure to perform a drive audit and, if necessary, replace the reaction/output carrier assembly and associated parts on certain 2015 model year cadillac escalade, escalade esv; chevrolet silverado ld crew, silverado ld crew ltz, silverado ld ext ltz; and gmc sierra ld crew, sierra ld crew denali, sierra ld ext, yukon, yukon denali, yukon xl, yukon xl denali vehicles equipped with an 8-speed transmission (m5u) and a 6.2l engine (l86). Some of these vehicles may exhibit a transmission gear whine noise at 1000-2000 RPM and between 20 MPH (32 kph) and 35 MPH (56 kph).

Owners of these vehicles have filed 260 complaints in the transmission category.