Sierra 1500 2WD V8-5.3L VIN B HO (2006)
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5. Using J 43773 (2), compress the shift valve 2 spring until the retaining clip (1) is loose. Remove the retaining clip (1).
6. Remove plug (3), spring (2), and shift valve 2 (1).
7. Using J 43773 (2), compress the control main valve spring until retaining clip (1) is loose. Remove retaining clip (1).