Sierra Classic 1500 4WD V8-6.0L (2007)
14. Remove the 3-4 accumulator piston (2).
15. Inspect the 3-4 accumulator spring for cracks.
16. Remove the 3-4 accumulator piston seal (1) from the 3-4 accumulator piston.
17. Inspect the 3-4 accumulator piston for the following conditions:
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Porosity
^
Cracks
^
Scoring
^
Nicks and scratches
Installation Procedure
1. Install a new 3-4 accumulator piston seal (1) to the 3-4 accumulator piston.