Excessive Flare - Engine Overspeed on Wide-Open Throttle
WARNING: This page is about a different car, the 2004 GMC Sierra, 2004 GMC Cab & Chassis Sierra, 2004 Chevrolet Silverado, and 2004 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.
Excessive Flare - Engine Overspeed on Wide-Open Throttle
| Condition | Action |
|---|---|
| Incorrect fluid level | Add fluid to the proper level. Refer to Transmission Fluid Checking Procedure . |
| Sticking valves in control valve body assembly | Rebuild the control valve body assembly. Refer to Control Valve Body Replacement . |
| Low main pressure | Refer to Low Main Line Pressure in All Ranges and Low Main Line Pressure in specific Ranges, Normal Pressure in Other Ranges . |
| Leaking trim solenoids | Repair or replace the trim solenoids. Refer to Control Valve Solenoid Replacement (Solenoid A, B)Control Valve Solenoid Replacement (Solenoid C, D, E, F, G) . |
| Erratic speed sensor signal | Refer to the speed sensor DTCs. |
| Piston seals leaking or clutch plates slipping in range involved | Overhaul the transmission. |