4T65E Banner Rebuild Kit 2003, new and ready to install. Fits the 4T65E. Ships fast from the USA.
This is the heavier version of a 4T65E banner kit, built for 2003 and later units. If your 2003-up Chevrolet Impala or Monte Carlo, Pontiac Grand Prix, Buick Century, LeSabre or Lucerne is slipping on the upshifts, slow to pick up Drive, or showing dark fluid with friction material in the pan, this kit covers the parts that wear out in a high-mileage 4T65E in one box. Beyond the usual overhaul gaskets, seals and friction plates, the listing adds a set of new pistons, all three bands and a filter, which is what separates it from a basic banner kit.
The 4T65E gets each gear by applying its clutch packs and bands with line pressure that the computer regulates through the pressure control solenoid. Friction plates glaze and thin with heat, lip seals harden, and the molded pistons that push each pack together wear in their bores. Transmission Digest notes that excess clutch clearance can make a molded piston cock and bind as it strokes, which wears the piston and its seal early. That is why new pistons in the box matter on a unit with real mileage. Per the listing, this kit contains:
Steel plates are not listed, so plan to reuse yours only if they are flat and free of heat marks.
Scan for codes and watch shift times on live data, then pull the pan. Friction debris on the magnet and slipping that gets worse with heat point to internal wear that a kit like this fixes. A clean pan with erratic shifts or solenoid codes points somewhere else first: Transmission Digest lists a damaged upper channel plate gasket and a worn actuator feed limit (AFL) valve as commonly overlooked causes. If the unit shifts into fourth late or not at all, read the 4T65E 3-4 clutch failure guide, and work through the 4T65E common problems and diagnosis guide before you commit to a teardown.
The listing applies this kit to 2003 and later 4T65E transaxles. That start year matters because GM changed the input and third freewheels at the start of 2003 production from sprag clutches to pawl clutches, and the input clutch friction went from 32 teeth to 30 to match. Count the teeth on your old input frictions and compare them to the kit before assembly. If you have a 1997-2002 unit with the sprag design, compare our 1997-2011 4T65E master rebuild kit instead. The Volvo version of this transaxle uses different valve body gaskets, so it is not covered here. When in doubt, send us your year and VIN, and browse every part for this unit on the 4T65E parts page.
| Fits | 4T65E 2003 |
| Part type | Banner Rebuild Kit |
| Condition | New |
| Brand | GM |
| Ships | From the USA |
| Warranty | 1-year |
Doing this repair right usually means replacing these at the same time. Same transmission, ships together.
It is listed for 2003 and later 4T65E units, which includes those cars. Because GM switched to pawl-type freewheels for 2003, compare the tooth count on your old input frictions with the kit, or send us your year and VIN.
A basic banner kit is the overhaul gaskets and seals plus frictions. This one adds a pistons kit, three new bands and a filter, so it covers more of the wear parts in one order.
Steels are not listed in the contents. Reuse yours only if they are flat and show no blue heat marks. If they are damaged, a master kit with steels is the better buy.
Transmission Digest ties long shift times and P1811 to excessive clearance in the second or third clutch pack. Measure each pack during assembly rather than assuming the kit sets clearance on its own.
Dexron VI. Flush the cooler first so old debris does not reach the new frictions and bands.
