4T65E
4T65E 1998 Chevy/Pontiac Grand Prix/Lumina/Monte Carlo – Remanufactured 4-Speed Automatic Trans
4T65E
4T65E 1999 Buick/Pontiac Bonneville/Park Avenue/Riviera – Remanufactured 4-Speed Automatic Trans
4T65E
4T65E 2004 Chevy/Pontiac Grand Prix/Impala/Monte Carlo – Remanufactured 4-Speed Automatic Trans
Signs your 4T65E is failing
Catch these early and you replace one transmission, not a transmission and a tow bill.
Often traced to a failing pressure control solenoid or worn valve body.
The engine revs but the car doesn't pick up speed in 4th.
Torque converter clutch shudder, felt like driving over rumble strips.
A long pause before Drive or Reverse engages.
A worn drive chain or bearings make a whine that rises with speed.
Friction material is breaking down, and more damage is coming.
Used vs. rebuilt vs. reman 4T65E
| Used | Rebuilt | Remanufactured | |
|---|---|---|---|
| Wear parts replaced | None | Failed parts only | All of them |
| Known weak points addressed | No | Rarely | Yes |
| Testing | "It ran" | Basic | Dyno-tested |
| Typical warranty | 30–90 days | 6–12 months | Up to 5 years |
4T65E questions, answered
What vehicles use the 4T65E?
The 4T65E was used in many GM front-wheel-drive vehicles, including the Impala, Monte Carlo, Grand Prix, LaCrosse, Century, Lucerne, Venture, Montana, Rendezvous and Uplander. Match your year and engine to the listing before you order.
What are common 4T65E problems?
Common issues include pressure control solenoid failure causing harsh shifts, torque converter shudder, worn clutch packs, drive chain wear and valve body wear.
Should I rebuild or replace a 4T65E?
If more than one component has failed, a remanufactured 4T65E is usually faster and more reliable than a rebuild, because every wear part is replaced and the unit is tested.