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Home >> Chevrolet >> 2005 >> Chevy Express H1500, Van Passenger >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 4 (Automatic Transmission - 4L80-E/4L85-E - Service, Diagnosis & Trouble Shooting) >> Troubleshooting >> No Engine Braking - D2

No Engine Braking - D2

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No Engine Braking - D2

Checks Cause
Bushing (234) Worn or damaged
Thrust Washer (218) Worn or damaged
Rear Gear set Spalled or broken
Reaction Drum and Carrier (651) Broken
Mainshaft (662) The shaft or the splines are broken.
Output Shaft (671) The shaft or the splines are broken.
Sun Gear Shaft (649) The shaft or the splines are broken.