Silverado 3500 2WD V8-6.6L DSL Turbo VIN 2 (2004)
13. Remove D ON/OFF shift solenoid retainer (1).
14. Remove D ON/OFF shift solenoid (4).
15. Remove O-rings (2) and (3) from D ON/OFF shift solenoid (4).
16. Remove E ON/OFF shift solenoid retainer (1).
17. Remove E ON/OFF shift solenoid (4).
18. Remove O-rings (2) and (3) from E ON/OFF shift solenoid (4).