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How do I Tell What Type of Jeep Transmission One Has?

by Teri Stryker

Over the years Jeep has used several different electronically controlled automatic transmissions. The AW-4 is used on 1993 models only. The 42RE and 42RH come with six-cylinder models. The 44RE, 46RH and 46RE are used on 5.2L/5.9L V8 models. In 1999 the 45RFE was brought in on the 4.7L V8 engine. 2001 saw an update as the 545RFE transmission was put into use.

Locate the plate.

Step 1

Lay on the ground on either side of the Jeep.

Step 2

Slide under the Jeep to the transmission which is bolted to the motor.

Look for a metal plate attached to the transmission. The transmission number is located on the plate. It is the only number on the plate. EX. 42RE.

Service department.

Step 1

Look on the dash or the title for the VIN number. The technician can enter the VIN number to find out what transmission is in the Jeep. The VIN is a combination of 17 numbers and letters.

Step 2

Call a Jeep dealership service department.

Supply the VIN to the service technician.

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