Sierra 2500 4WD V8-6.6L DSL Turbo VIN 2 (2004)
6. Lift the seat cushion up off the rear plastic holders (1) on the underside of the seat cushion, and pull forward.
7. Remove the seat switch bezel.
8. Remove the lumbar actuator (5).
9. Unclip the seat trim cover from the seat cushion frame.