Yukon/Denali XL 1500 4WD V8-6.0L VIN U (2004)
Important: Use care not to drop the following items that will be removed along with the spacer plate:
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The number 1 checkball
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The 3-4 accumulator spring
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The 3-4 accumulator pin
11. Remove the spacer plate support.
12. Remove the spacer plate to valve body gasket, the spacer plate and the spacer plate to transmission case gasket.
13. Remove the 3-4 accumulator piston (2).
14. Inspect the 3-4 accumulator spring for cracks.