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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 >> No Overrun Braking - D1

No Overrun Braking - D1

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.
No Overrun Braking - D1

Checks Cause
Refer to No Overrun Braking - D3 .
Check the PCM for current DTCs.
Automatic Transmission Fluid Pressure Manual Valve Position Switch Assembly
  • Pinched wire
  • Loose connector
  • Loose bolt causing leakage
  • No signal to the PCM.