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Home >> GMC >> 2003 >> Safari Van Cargo, AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 1620 (Automatic Transmission - 6T75 - Removal & Installation, Service, Overhaul, Troubleshooting & Diagnosis) >> Diagnostic Information And Procedures >> No First and Reverse Gears

No First and Reverse Gears

WARNING: This page is about a different car, the 2009 Saturn Vue. However, it is still accessible from the selected car via links, so may be relevant.
Checks Causes
Low and Reverse Clutch Assembly (455)
  • Inspect for disengaged or broken Low and Reverse Clutch Retainer (454)
  • Inspect for stripped or sheared splines on Low and Reverse Clutch (455)
Low and Reverse Clutch
  • Inspect for stripped or sheared splines on Low and Reverse Clutch Plates (449-453)
  • Inspect for damaged, deformed or improper surface finish on the Low and Reverse Clutch Plates (449-453)
Case Cover Assembly (403)
  • Inspect for disengaged or broken Low and Reverse Clutch Piston Spring Retainer (410)
  • Inspect for worn, damaged or debonding Low and Reverse Clutch Piston Seals (408)
  • Inspect for broken or deformed Low and Reverse Clutch Piston (408)
  • Inspect for improperly position or too large bleed hole in Low and Reverse Piston (408)
  • Inspect for porosity or improper finish on the Case Cover