LEMON Manuals: Even more car manuals for everyone
Home >> GMC >> 2006 >> Sierra 1500 HD, RWD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 37 (Automatic Transmission - ALLISON - Service, Diagnosis & Troubleshooting) >> Excessive Slippage and Clutch Chatter

Excessive Slippage and Clutch Chatter

WARNING: This page is about a different variant/trim than selected.
Excessive Slippage and Clutch Chatter

Condition Action
Incorrect speed sensor readings See speed sensor DTCs.
Incorrect fluid level Correct the fluid level. Refer to Transmission Fluid Checking Procedure .
Main pressure low Repair the transmission.
TCC clutch not applied Inspect the torque converter clutch system wiring, pressure, and controls. Repair as necessary.
Ranges 1, 2, 3, 4 Only
1-2-3-4 clutch slipping, leaks at rotating clutch seals, leaks at piston seals, 1-2-3-4 clutch plates worn Inspect the 1-2-3-4 clutch plates, and piston and rotating seals. Replace/rebuild as necessary.
Ranges 4, 5, 6 Only
4-5-6 clutch slipping, leaks at rotating clutch seals, leaks at piston seals, 4-5-6 clutch plates worn Inspect the 4-5-6 clutch plates, and piston and rotating seals. Replace/rebuild as necessary.
Ranges 3, 5, R Only
3rd, 5th and Reverse clutch slipping, leaks at piston seals, 3rd, 5th and Reverse clutch plates worn Inspect the 3rd, 5th and Reverse clutch plates and piston seals. Replace/rebuild as necessary.
Range 2, 6 Only
2-6 clutch slipping, leaks at piston seals, 2nd clutch plates worn Inspect the 2-6 clutch plates and piston seals. Replace/rebuild as necessary.
Ranges 1, R Only
Low and Reverse clutch slipping, leaks at piston seals, Low and Reverse clutch plates worn Inspect the Low and Reverse clutch plates and piston seals. Replace/rebuild as necessary.