For 1990-2009 cars only

Makes 🢒 Pontiac 🢒 1999 🢒 Sunfire 🢒 Transmission/Transaxle 🢒 Automatic Transaxle - 3T40 🢒 Slipping or Harsh 1-2 Shift

Slipping or Harsh 1-2 Shift for Pontiac Sunfire 1999

Checks

Cause

Oil Level

High or Low

TV Cable

Misadjusted, unhooked, bound, or broken

Oil Pressure

See causes of high or low oil pressure

Intermediate Servo (128-137)

•	Seals are cut, damaged, or leaking (128, 132, 134)

•	The piston is damaged (133)

•	The servo bore in the case is damaged (15)

•	The apply pin is too long or too short (129)

•	The servo orifice bleed cup plug is missing

•	A leak exists between the servo apply pin and the case (129-137)

Intermediate Band (606)

The servo band apply pin is binding (129)

TV Link (22)

Link is bent or is wrong

Control Valve Assembly (21)

•	The TV plunger is binding (367)

•	The shift TV valve is binding (308)

•	The 1-2 accumulator valve is binding

1-2 Accumulator (419-422)

•	Binding 1-2 accumulator piston (421)

•	Broken 1-2 accumulator spring (419)

•	The piston seal or groove is damaged (420)

•	The 1-2 accumulator bore is damaged (401)

Spacer Plate (20)

•	The spacer plate or the gasket is incorrect (19, 20)

•	The gasket is incorrectly installed (19)

Case (15)

The second oil passage is leaking

Case Cover (401)

The second oil passage is leaking