4T65E Pressure Control Solenoid 1995-2003, new and ready to install. Fits the 4T65E. Ships fast from the USA.
Owners of early 4T65E cars, such as the late-1990s and early-2000s Pontiac Grand Prix, Buick Century, Regal, LeSabre and Park Avenue, Oldsmobile Intrigue and the 2000-2002 Chevrolet Impala and Monte Carlo, usually find this part after a slipping upshift, a harsh drop into gear, or a P0748 code. This listing is the single early-style pressure control solenoid with reference D84431G, the cylindrical black-coil design with a side connector shown in the photo. It is a budget way to replace just the solenoid that sets line pressure when the rest of the valve body electrics test good.
GM introduced the 4T65E for 1997 as an electronic evolution of the 4T60-E, with the computer controlling line pressure through this solenoid. The computer pulses current through the coil; the solenoid's valve then regulates signal oil to the pressure regulator. When the coil weakens or the small inlet screen plugs, the computer loses its grip on pressure. Low pressure means clutches slip during the shift and wear faster; stuck-high pressure means every shift and engagement lands hard.
Early 4T65E units are also known for 2nd clutch and drum wear. A worn clutch pack causes the same slipping feel and the same P1811, so a new solenoid will not help if the clutches are already burnt.
Check fluid level and condition first; dark, burnt fluid with debris points to clutch damage. Then measure the solenoid at the case connector and at the solenoid itself, and put a pressure gauge on the line tap to see whether pressure tracks the commanded value. If the solenoid tests good but pressure is erratic, Sonnax identifies a worn AFL valve bore in the channel plate as a common cause, since it starves the solenoid of feed oil. The 4T65E pressure control solenoid symptoms guide has the full test sequence, and the 4T65E common problems guide covers the clutch and drum failures that mimic it.
The listing range runs 1995-2003, but the 4T65E itself began in 1997, so on a 1995-1996 car this range reaches back into the late 4T60-E era; confirm your transmission before ordering. This is the early-style solenoid. 2003 was a changeover year when GM revised the valve body, and later units use the different design sold as the 2003 later-style pressure control solenoid. Match the body shape and connector with your old solenoid, check reference D84431G against it, or send us your year and VIN. Every early and late 4T65E part we stock is on the 4T65E parts page.
| Fits | 4T65E 1995-2003 |
| Part type | Pressure Control Solenoid |
| Condition | New |
| Brand | OEM |
| Reference | D84431G |
| Ships | From the USA |
| Warranty | 1-year |
Doing this repair right usually means replacing these at the same time. Same transmission, ships together.
Only if your 2003 still has the early-style solenoid. Later units use the revised design. Compare the photo with your old part or send us your year and VIN.
The listing range reaches back into the late 4T60-E years. If your car is a 1995 or 1996, confirm which transmission it has before ordering.
No. It is the single pressure control solenoid shown in the photo, reference D84431G. The 1997-2002 set includes the shift and converter clutch solenoids as well.
Yes. GM made DEXRON-VI back-serviceable into DEXRON-III applications, so it is the correct fluid for the refill.
Inspect the solenoid screen and fluid for debris, check the internal harness, and if pressure stays erratic have the AFL valve bore checked for wear.
