LEMON Manuals
: Even more car manuals for everyone
Home
>>
GMC
>>
1992
>>
Forward Control 5.7 K, Standard
>>
Repair and Diagnosis (Single Page)
>>
Transmission
>>
Automatic Trans
>>
Automatic Transmission - Overhaul - 4L80-E
>>
Trouble Shooting
>>
Symptom Diagnosis
>>
No 1-2 Shift (1st Gear Only) In "D4"
No 1-2 Shift (1st Gear Only) In "D4"
Output or input speed sensor(s) reads zero. Sun gear splines damaged or missing.