4L60E, 4L65E Replacement Valve Body Gaskets Does Not Seem to Fit - kw chatter clutch repair second shift shudder slip

The following diagnosis might be helpful if the vehicle exhibits the symptom(s) described in the PI.

Gasket does not seem to fit. The replacement valve body gaskets (spacer plate to transmission case and spacer plate to valve body) may appear to be larger than the original valve body gaskets or you may notice that bolt holes of the new gaskets do not line up with the transmission case and valve body.

The valve body gaskets may have been exposed to moisture and or high levels of humidity causing the gaskets to enlarge or swell. The enlarged gaskets should not be used. The gaskets should be stored in their original packaging until needed. New valve body gaskets will be needed to remedy the condition.

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Please follow this diagnosis process thoroughly and complete each step. If the condition exhibited is resolved without completing every step, the remaining steps do not need to be performed.

(99 - 03 C1 2WD CHEVROLET SILVERADO 4L60E TRANSMISSION) and (99 - 03 K1 4WD CHEVROLET SILVERADO 4L60E TRANSMISSION) and (99 - 03 C1 2WD GMC SIERRA 4L60E TRANSMISSION) and (99 - 03 K1 4WD GMC SIERRA 4L60E TRANSMISSION) and (02 - 03 C1 2WD CHEVROLET AVALANCHE 4L60E TRANSMISSION) and (02 - 03 K1 4WD CHEVROLET AVALANCHE 4L60E TRANSMISSION) and (99 - 03 C1 2WD CHEVROLET TAHOE 4L60E TRANSMISSION) and (99 - 03 K1 4WD CHEVROLET TAHOE 4L60E TRANSMISSION) and (99 - 03 S1 2WD CHEVROLET S-10 4L60E TRANSMISSION) and (99 - 03 T1 4WD CHEVROLET S-10 4L60E TRANSMISSION) and (99 - 03 M1 2WD CHEVROLET ASTRO 4L60E TRANSMISSION) and (99 - 03 L1 4WD CHEVROLET ASTRO 4L60E TRANSMISSION) and (99 - 03 G1 2WD CHEVROLET EXPRESS 4L60E TRANSMISSION) and (99 - 03 G2 2WD CHEVROLET EXPRESS 4L60E TRANSMISSION) and (03 H1 AWD CHEVROLET EXPRESS 4L60E TRANSMISSION (03 H2 AWD CHEVROLET EXPRESS 4L60E TRANSMISSION) and (99 - 03 C1 2WD CHEVROLET SUBURBAN 4L60E TRANSMISSION) and (99 - 03 K1 4WD CHEVROLET SUBURBAN 4L60E TRANSMISSION) and (99 - 03 C1 2WD GMC YUKON/XL 4L60E TRANSMISSION) and (99- 03 K1 4WD GMC YUKON/XL 4L60E TRANSMISSION) and (99 - 03 K6 AWD GMC YUKON/XL DENALI 4L65E TRANSMISSION) and (01 - 03 K6 AWD GMC SIERRA DENALI 4L65E TRANSMISSION) and (02 - 03 S1 2WD CHEVROLET TRAILBLAZER 4L60E TRANSMISSION) and (02 - 03 T1 4WD CHEVROLET TRAILBLAZER 4L60E TRANSMISSION) and (99 - 03 S1 2WD CHEVROLET BLAZER 4L60E TRANSMISSION) and (99 - 03 T1 4WD CHEVROLET BLAZER 4L60E TRANSMISSION) and (99 - 03 YB CHEVROLET CORVETTE 4L60E TRANSMISSION) and (99 - 02 FB CHEVROLET CAMARO 4L60E TRANSMISSION) and (99 - 02 FB PONTIAC FIREBIRD 4L60E TRANSMISSION) and (02 - 03 S1 2WD GMC ENVOY 4L60E TRANSMISSION) and (02 - 03 T1 4WD GMC ENVOY 4L60E TRANSMISSION) and (99 - 03 S1 2WD GMC JIMMY 4L60E TRANSMISSION) and (99 - 03 T1 4WD GMC JIMMY 4L60E TRANSMISSION) and (99 - 03 M1 2WD GMC SAFARI 4L60E TRANSMISSION) and (99 - 03 L1 AWD GMC SAFARI 4L60E TRANSMISSION) and (99 - 03 S1 2WD GMC SONOMA 4L60E TRANSMISSION) and (99 - 03 T1 4WD GMC SONOMA 4L60E TRANSMISSION) and (99 - 03 G1 2WD GMC SAVANA 4L60E TRANSMISSION) and (99 - 03 G2 2WD GMC SAVANA 4L60E TRANSMISSION (03 H1 AWD GMC SAVANA 4L60E TRANSMISSION) and (03 H2 AWD) and (GMC SAVANA 4L60E TRANSMISSION) and (02 - 03 T6 4WD OLDSMOBILE BRAVADA 4L60E TRANSMISSION) and (99 - 03 K6 AWD CADILLAC ESCALADE 4L65E TRANSMISSION) and (02 - 03 C6 2WD CADILLAC ESCALADE EXT 4L60E TRANSMISSION) and (03 AWD N2 HUMMER 4L65E TRANSMISSION)

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