Silverado 1500 2WD V6-4.3L (2007)
Transmission Mount: Testing and Inspection
6L50/6L80/6L90 Transmission Mount Inspection
Transmission Mount Inspection
Notice: In order to avoid oil pan damage and possible engine failure, insert a block of wood that spans the width of the oil pan bottom between the oil
pan and the jack support.
1. Raise the transmission/transaxle in order to remove the weight from the transmission/transaxle mount and create slight tension in the rubber.
2. Observe the transmission/transaxle mount while raising the transmission/transaxle. Replace the transmission/transaxle mount if the
transmission/transaxle mount exhibits any of the following conditions:
Important: Black paint on the rubber will crack with time, this does no constitute a failure.
*
The hard rubber surface is covered with heat check cracks.
*
The rubber is separated from the metal plate of the transmission/transaxle mount.
*
The rubber is split through the center of the transmission/transaxle mount.
3. If there is movement between the metal plate of the transmission/transaxle mount and its attaching points, lower the transmission/transaxle on the
transmission/transaxle mount. Tighten the bolts or nuts attaching the transmission/transaxle mount to the frame or transmission/transaxle mount
bracket.
