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Home >> GMC >> 2005 >> Sierra 1500 HD, RWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 222 (Automatic Transmission - 5L40-E/5L50-E - Service, Diagnosis & Trouble Shooting) >> No Third Gear

No Third Gear

WARNING: This page is about a different car, the 2005 Cadillac STS. However, it is still accessible from the selected car via links, so may be relevant.
No Third Gear

Check Causes
DEFINITION: A large engine RPM increase is noted in third gear, Drive range, with no vehicle forward speed increase. First, second, and fourth gear operation are normal. Shifts into third gear are soft or do not occur.
Intermediate Clutch Sprag
  • Damaged sprag
  • Worn or pitted inner race
Intermediate Clutch
  • Damaged piston
  • Damaged or worn clutch plates
Intermediate Fluid Passage Sleeve Leaking