Shift Concerns: Timing - Erratic/Hunting

WARNING: This page is about a different variant/trim than selected.

SHIFT CONCERNS: TIMING - ERRATIC/HUNTING

Possible Component	Reference/Action
212 - ELECTRICAL ROUTINE
Powertrain Control System	-
-	Refer to ENGINE SYSTEM-GENERAL INFORMATION to diagnose erratic engine operations.
Engine concerns	Carry out Shift Point Test. Refer to SHIFT POINT ROAD TEST .
Electrical inputs/outputs, vehicle harnesses, powertrain control module, shift solenoids, transmission range sensor, stop lamp switch, TCC solenoid, output shaft speed (OSS) sensor, throttle position sensor, TSS, EPC, 3-2T/CCS	Run On-Board Diagnostics Tests. Refer to INTRODUCTION - GASOLINE . GO to PINPOINT TEST A , GO to PINPOINT TEST C , GO to PINPOINT TEST D , GO to PINPOINT TEST F and GO to PINPOINT TEST G .
312 - HYDRAULIC/MECHANICAL ROUTINE
Fluid	-
Incorrect level	Fill to correct level.
Condition	Inspect fluid level and condition. Refer to PRELIMINARY INSPECTION .
Main Control	-
Bolts out of torque specification	Adjust bolts to specification.
Gaskets damaged	Inspect for damage. Install new as necessary.
3-2 timing valve, pull-in valve, 2-4 accumulator, servo release shuttle valve, 3-2 control valve stuck, damaged, misassembled	Inspect for damage. Repair as necessary.
Solenoid screen blocked	Clean or install a new screen.
Separator plates damaged, blocked	Inspect for damage. Repair as necessary.
Pressure tap plate/gasket damaged	Inspect for damage. Repair as necessary.
SSA, SSB, 3-2T/CCS solenoid not functioning correctly, stuck, damaged	Activate solenoids using transmission tester. Inspect for damage. Repair as necessary.
Specific Shifts	-
-	Refer to the following shift routine(s) for further diagnosis:
Shift Concern: No 1-2 Shift	Routine 220/320
Shift Concern: No 2-3 Shift	Routine 221/321
Shift Concern: No 3-4 Shift	Routine 222/322
Shift Concern: Soft/Slip 1-2 Shift	Routine 226/326
Shift Concern: Soft/Slip 2-3 Shift	Routine 227/327
Shift Concern: Soft/Slip 3-4 Shift	Routine 228/328
Shift Concern: Soft/Slip 4-3 Shift	Routine 229/329
Shift Concern: Soft/Slip 3-2 Shift	Routine 230/330
Shift Concern: Soft/Slip 2-1 Shift	Routine 231/331
Shift Concern: Harsh 1-2 Shift	Routine 232/332
Shift Concern: Harsh 2-3 Shift	Routine 233/333
Shift Concern: Harsh 3-4 Shift	Routine 234/334
Shift Concern: Harsh 4-3 Shift	Routine 235/335
Shift Concern: Harsh 3-2 Shift	Routine 236/336