Sierra Denali RWD V8-6.2L (2009)
5. Slide the trailer brake control module (1) toward the center of the vehicle and remove the trailer brake control module.
Installation Procedure
1. If installing a new trailer brake control module, hand start the 3 trailer brake control module bolts.
2. Position the trailer brake control module to the frame bracket.
3. Slide the trailer brake control module (1) toward the left frame rail.
Caution: Refer to Fastener Caution (See: Service Precautions/Vehicle Damage Warnings/Fastener Caution) .
