Filter and pan gasket to service GM 4T60E and 4T65E front-wheel-drive transaxles, replacing part 58837 on Impala, Grand Prix, Lesabre and Monte Carlo.
If you own a GM front-wheel-drive car with the 4T60E or 4T65E four-speed and the fluid is dark, the shifts have gone lazy, or you just bought a high-mileage Impala, Grand Prix, LeSabre or Monte Carlo with no service records, the pan-and-filter job is where you start. This kit is the pickup filter and pan gasket that replace kit number 58837, the common service set for these transaxles. It is the cheapest insurance you can put in one of these units, and it is the first thing any transmission tech will want done before chasing a shift complaint.
Both transaxles draw fluid from a sump pan under the case. The filter sits in the pan and plugs up into the pump suction bore with a neck seal, so every drop the pump sends to the valve body, the clutches and the converter passes through it first. On these units the pump feeds a channel plate full of small valves: the AFL valve, the boost valve and the pressure regulator all depend on clean oil. Sonnax documents how bore wear in the 4T65E channel plate lowers the oil reaching the solenoids, and debris is what accelerates that wear. A filter that is loaded with clutch dust or partly collapsed makes the pump work harder for less pressure, especially once the fluid is hot.
Check the fluid level hot on the dipstick first; low fluid causes the same delayed engagement and whine as a restricted filter. Then look at what you find in the pan. A light gray film on the magnet is normal wear. Chunks of friction material, brass flakes or heavy metal tell you something internal is coming apart, and a new filter alone will not fix it. Our 4T65E filter and pan service guide walks through the drop, what to read in the debris, and how GM specs the refill. If the problem started with a code rather than a symptom, run through 4T65E common problems and diagnosis before deciding a service is the whole answer.
Per the listing, this kit covers the GM 4T60E and 4T65E in the 2000-2011 Chevy Impala, 1995-2007 Monte Carlo, 1992-2008 Pontiac Grand Prix, 1992-2005 Bonneville and LeSabre, 1991-2005 Park Avenue, 1993-2004 Regal, the Buick Lucerne and LaCrosse, the Venture and Uplander vans, and the 1999-2005 Volvo S80 that used the GM unit. GM built these transaxles for a long time with running changes, so compare the old filter's neck and shape with the new one before the pan goes back up. If you are not sure which unit is in your car, send us the year and VIN and we will check it. Everything else we stock for this transaxle is on the 4T65E parts page.
If the debris says the unit is due for more than a service, a 4T65E solenoid kit for 2003-up cars or a 4T60E master rebuild kit for the earlier unit picks up where this kit leaves off.
| Fits | GM 4T60E / 4T65E (and 4T40E/4T45E on S80): Impala, Monte Carlo, Grand Prix, Bonneville, Lesabre, Park Avenue, Regal, Lucerne, Lacrosse, Venture, Uplander, Volvo S80 |
| Includes | Automatic transmission pickup filter and pan gasket |
| Replaces part number | 58837 |
| Fluid | DEXRON-VI automatic transmission fluid |
| Service note | Seat the pan gasket with grease, not sealant; torque pan bolts evenly |
| Ships from | USA |
Doing this repair right usually means replacing these at the same time. Same transmission, ships together.
Yes, the listing covers both the 4T60E and the later 4T65E in the GM cars and vans named above. Running changes happened over the years, so compare the new filter neck against your old one before installing, or send us your year and VIN.
The pickup filter and the pan gasket. Bolts, fluid and the pan are not included.
DEXRON-VI. GM states it replaces DEXRON-III and DEXRON-IIE, so it is the correct fill for older 4T60E cars as well as later 4T65E cars.
Less than the 7.4 qt total GM lists for the 2008 Impala, because a pan drop does not drain the converter or cooler. Measure what comes out, add about that much, then top off on the dipstick at operating temperature.
No. Install the gasket dry or held with a light film of grease and torque the bolts evenly in a criss-cross pattern. Sealant can push the gasket out of place and cause the leak you are trying to avoid.
GM's schedule calls for a fluid and filter change about every 50,000 miles under severe service such as heavy city traffic in hot weather, towing or hilly driving, and at 100,000 miles under normal service.
