GM Service Manual Online
For 1990-2009 cars only
Makes
🢒
GMC_Truck
🢒
1999
🢒
GMC C Sierra - 2WD
🢒
Transmission/Transaxle
🢒
Automatic Transmission - 4L60-E
🢒 Third Gear Only
Third Gear Only
Checks
Causes
System Voltage
•
12 volts not supplied to transmission
•
Electrical short (pinched solenoid wire)
•
Solenoid not grounded