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Home >> GMC >> 1986 >> Safari Van M V6-262 4.3L >> Repair and Diagnosis >> Transmission and Drivetrain >> Automatic Transmission/Transaxle >> Testing and Inspection >> Symptom Related Diagnostic Procedures >> No Part Throttle or Delayed Downshifts

No Part Throttle or Delayed Downshifts

1. Throttle linkage incorrectly adjusted.

2. 2-4 servo assembly apply pin cut or damaged.

3. 2-4 servo cover retaining ring omitted or incorrectly assembled.

4. Fourth apply piston damaged or incorrectly assembled.

5. 2-4 servo inner housing damaged or incorrectly assembled.

6. Governor weights binding.

7. Governor valve stuck

8. Throttle valve, 3-2 control valve or T.V. modulated downshift valve stuck

9. T.V. sleeve turned in bore.

10. 4-3 sequence valve body channel blocked.

11. Number 5 check ball omitted from valve body.