Sierra Classic 2500 4WD V8-6.0L (2007)
8. Remove the lube oil pipe bolt (6) and retainer (7).
9. Remove the lube oil pipe (5).
10. Remove the manual shaft detent spring bolt and spring (3).
11. Important:
Keep the control valve body level when lowering it from the vehicle. This will prevent the loss of checkballs located in the valve body passages.
Remove the remaining valve body bolts.
12. Carefully lower the valve body from the transmission. Use care not to drop the manual shaft valve.
13. Remove the valve body (2) which includes the following:
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The accumulator housing (1)
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The valve body to the spacer plate gasket
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The spacer plate
14. Remove the manual valve (1) from the valve body.
15. Inspect the manual valve for nicks and burrs.
16. Remove the spacer plate to case gasket (2) from the case. The gasket may stick to the spacer plate.
17. Remove the PWM screen (1) from the case passage.
