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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 1880 (Automatic Transaxle - 4T45-E - Service, Diagnosis & Troubleshooting) >> No Reverse or Slips in Reverse

No Reverse or Slips in Reverse

WARNING: This page is about a different car, the 2007 Saturn Vue. However, it is still accessible from the selected car via links, so may be relevant.
No Reverse, Slips in Reverse

Checks Causes
Reverse Clutch No apply or slipping
Piston and Seal Assembly (457) Binding, cracked, or leaking
Inner Seal (456) Plugged orifice
Clutch Plates (460-463) Worn friction or broken splines
Snap Ring (459, 464) Out of position
Housing (454) Cracked, plugged feed holes, or broken tangs
Housing Retainer and Ball Assembly Missing or out of position
Springs (458) Binding
Reverse Clutch Fluid Routing Fluid leak or restriction
Driven Sprocket Support (95)
  • Leaking seal rings
  • Porosity, damage, misalignment
Channel Plate and Gasket, and Valve Body, Gaskets, and Channel Plate Porosity, fluid leak across the channels, misalignment, damage, or fluid restriction
Low and Reverse Band and Servo No apply or slipping
Servo Piston (69) Broken or binding
Servo Piston Seals (71, 72) Leaking
Servo Pin (67) and Springs (66, 68) Binding
Servo Cover (73) Broken, loose, or leaking
Low and Reverse Band (111) Broken, worn, or out of position
Anchor Pin (64) Broken
Fluid Feed Tubes (83)
  • Broken, bent, or plugged
  • Missing or leaking seal rings
Transmission Case (1) Porosity, fluid leak, or restriction
Shift Linkage Disconnected or misaligned
Manual Valve (800) and Link (802) Disconnected or misaligned
#1 Checkball Missing, no low band fluid
Fluid Level Low
Fluid Pressure Low
Refer to High or Low Line Pressure .