GM Service Manual Online
For 1990-2009 cars only

Checks

Action

Valve spring seat (306) for the line limit valve spring (309)

Inspect for damage. Replace the valve spring seat (306) for the line limit valve spring (309). Refer to Control Valve Body Assembly Disassemble .

Forward and reverse clutch valve spring (303)

Inspect for sticking. Replace the forward and reverse clutch valve spring (303). Refer to Control Valve Body Assembly Disassemble .

Manual valve (202)

Inspect for wear, sticking or binding. Replace the manual valve (202). Refer to Control Valve Body Assembly Disassemble .

Clutch boost valve  (322)

Inspect for wear, sticking or binding. Replace the clutch boost valve  (322). Refer to Control Valve Body Assembly Disassemble .