Chevrolet Trailblazer Service Manual page 438

Shock module retaining nuts removal and installation
12. Remove the retaining nuts from the upper shock modules.
13. Lower the jack stands supporting the lower control arms.
14. Remove the front wheel drive shafts from the differential carrier using a brass drift.
15. Set aside the front wheel drive shafts.
16. Secure the front shock modules to the frame.
17. Remove the jack stands supporting the lower control arms.
18. Remove the front propeller shaft from the pinion yoke.
19. Set aside and secure the front propeller shaft.
20. Remove the inner shaft from the differential carrier.
21. Detach the differential carrier from the oil pan and secure it to the frame.
22. Remove the oil pan from the engine.
23. Remove the differential carrier from the vehicle.