Sierra Denali RWD V8-6.2L (2009)
5. Remove the auxiliary battery positive cable connector (1) from the underhood bussed electrical center (UBEC).
6. Remove the mega fuse cover (3).
7. Disconnect the auxiliary battery positive cable electrical connector (2) from the engine wiring harness connector.
8. Remove the relay (1) clip from the stud on the front of dash.