W 250 Pickup V8-5.9L VIN Z (1991)
Will Not Unlock
1.
Sticking fail-safe valve.
2.
Sticking lock-up valve.
3.
Sticking switch valve.
4.
Valve body malfunction.
5.
Sticking governor valve.
Will Not Unlock
1.
Sticking fail-safe valve.
2.
Sticking lock-up valve.
3.
Sticking switch valve.
4.
Valve body malfunction.
5.
Sticking governor valve.