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Home >> GMC >> 2004 >> Yukon Denali >> Repair and Diagnosis >> External Pages >> Different car >> Section 417 (Automatic Transmission - 4L80-E/4L85-E (Troubleshooting)) >> Troubleshooting >> First and Second Gear Only - D4

First and Second Gear Only - D4

WARNING: This page is about a different car, the 2004 GMC Yukon XL, 2004 Chevrolet Suburban, and 2004 Chevrolet Avalanche. However, it is still accessible from the selected car via links, so may be relevant.
First and Second Gear Only - D4

Checks Cause
2-3 Solenoid (311)
Check for DTCs.
  • Stuck Off
  • Loose connector
  • No voltage to the solenoid
  • Solenoid O-ring failure
  • No PCM signal to the solenoid
2-3 Shift Valve (312) Stuck
Check the PCM for current DTCs.
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