Excessive Slippage and Clutch Chatter
WARNING: This page is about a different car, the 2008 GMC Sierra, 2008 GMC Cab & Chassis Sierra, 2008 Chevrolet Silverado, and 2008 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.
| Condition | Action |
|---|---|
| Incorrect speed sensor readings | See speed sensor DTCs. |
| Incorrect fluid level | Correct the fluid level. Refer to Transmission Fluid Check . |
| 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. |