Yukon XL 2500 2WD V8-8.1L VIN G (2004)
5. Remove the TCC PWM solenoid retainer.
6. Remove the TCC PWM solenoid in order to access one of the TCC solenoid bolts.
7. Remove the pressure control solenoid retainer bolt (364A) and retainer (378).
8. Remove the pressure control solenoid (377).
9. Remove the TCC solenoid bolts and the valve body bolts which retain the internal wiring harness.