Jeep Grand Cherokee Transmission
There are different types of transmission for the Jeep Grand Cherokee, so it is important to know the engine size. The next step is to properly diagnose the problem, because it could be something as simple as a failed sensor that is putting the transmission into failsafe. The Jeep Grand Cherokee and the Dodge Ram utilize some of the same transmissions, so there is useful information listed for those trucks and SUVs also.
The models with a 4.0L six cylinder engine have the A500 transmission, which Jeep began using in 1994. The A500 is a four speed overdrive transmission based on the Chrysler Torqueflight 904, which was developed in the 1960s. It is electronically controlled, but retains much of the old-school engineering, except that it has no governor. The governor has been replaced with solenoids that simulate governor pressure, based on signals from the computerized electronic control module. To remanufacture this transmission, using original equipment Jeep (Chrysler) parts, would run you $2877 (worst case), including all parts, labor, fluid, taxes, and upgrades. All our transmissions carry a full 4 year, 100,000 mile warranty.
Jeep Cherokee with Dodge 5-45RFE 5 Speed Automatic
The 3.7L V-6 and the 4.7L V-8 models utilize a five speed automatic transmission called the 5-45RFE. It is based on 1990s technology and has far fewer problems than the A500. The most common problem is a cracked plate on the valve body, which retains the accumulator pistons. When this plate breaks it causes shifting errors. Replacing this plate and upgrading the valve body would run you approximately $680. The plate that we would install is a hardened steel upgrade that will never break. If you have this transmission, you want to have somebody you can trust pull the pan and inspect the plate to see if it is broken. In our experience, most dealerships do not do this; they only install replacement transmissions. To remanufacture this transmission, using original equipment Chrysler parts, would run you $3177.00 (worst case), including all parts, labor, fluid, taxes, and upgrades, including an upgraded plate, even if it isn’t currently broken. It would also carry a full 4 year, 100,000 mile warranty. As you can see, the difference in price is significant. Therefore, it is always best to check the plate.