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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 Overrun Braking In "D2"

No Overrun Braking In "D2"

Problem with overrun clutch or reaction sun gear assemblies. Possible trouble Code 28, 68 or 85. Problem with pressure switch to PCM-to-TCM signal.



Problem with overrun clutch or reaction sun gear assemblies.



Problem with overrun clutch or reaction sun gear assemblies.

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