GM Service Manual Online
For 1990-2009 cars only

Condition

Action

DEFINITION: Poor acceleration; flares on start-off in the D and I positions; stall speed high in the D, I and L positions

    • 1st accumulator inoperative
    • 1st clutch inoperative
    • Low fluid level
    • ATF pump output low
    • Restricted ATF filter
    • Regulator valve stuck
    • Slipping clutch
    • Inspect the 1st clutch pressure.
    • Inspect the clutch piston and the O-rings.
    • Inspect the spring retainer for wear and damage.
    • Inspect the clutch backing-plate-to-top-disc clearance. If the clearance is out of tolerance, inspect the clutch discs and plates for wear and damage. If the discs and plates are worn or damaged, replace the discs and plates as a set. If the discs and plates are in satisfactory condition, adjust the clutch backing plate clearance.
    • Inspect the ATF level.
    • Inspect the ATF filter for being restricted.
    • Inspect the regulator valve for being stuck.