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Home >> Chevrolet >> 2007 >> Chevy Express G2500, Van Cargo, 6.6 6 >> Repair and Diagnosis >> Transmission >> Hydraulic Diagrams >> Automatic Transmission - 4L80-E/4L85-E - Removal & Installation, Service, Overhaul, Troubleshooting & Diagnosis >> Diagnostic Information And Procedures >> Second Gear Starts

Second Gear Starts

Second Gear Starts

Checks Cause
Intermediate Clutch Plates (631, 632) Seized
Direct Clutch Lube Feed Blocked
Center Support Springs (635) Jammed
Center Support Piston (636) Jammed
1-2 Shift Solenoid Valve (313)
  • Stuck Off
  • O-ring failed
  • No voltage to the solenoid
  • Poor connection
PCM
  • No PCM signal to the solenoid
  • Failed
1-2 Shift Valve (314) Stuck
Check the PCM for current DTCs.
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