K 1500 Yukon 4WD V8-5.3L VIN Z Flex Fuel (2003)
Important: Do not use a magnet in order to remove the checkballs. Using a magnet to remove the checkballs may magnetize the checkballs, causing
metal particles to stick.
23. Remove the eight checkballs (nine checkballs for some models).
Installation Procedure
1. Install the 8 checkballs (9 checkballs for some models) into the valve body.
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The checkball marked as number 2, is used on RCP, RDP, ZJP and ZLP models only
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To hold the checkballs in place, use the J 36850.
2. Install the PWM screen into the valve body.
3. Install a new manual 2-1 band servo piston seal (2) onto the manual 2-1 band servo piston (3).