Can I swap a 45rfe with an 545rfe?

Premium Member. It’s the exact same transmission with the exact same wiring harness, just with different programming in the TCM. Since you have a 2000, you can not use the 5-45 TCM (its actually part of the PCM and is totally incompatible with your truck), you must use your existing 45 TCM.

Is the 545rfe a good transmission?

As for reliability, the RFE is generally considered above average, but a number of people have had problems after installing an aftermarket computer programmer. The 4.7L and the 5.7L HEMI use the same transmission, so it should also be the same filter part numbers for both engines.

What does WJ mean for Jeep?

Jeep Grand Cherokee
The Jeep Grand Cherokee (WJ) is the second generation of the Jeep Grand Cherokee sport utility vehicle. Unveiled in Detroit, Michigan on June 16, 1998, production lasted until 2004. The WJ was completely overhauled from its ZJ predecessor, and was renowned for its off-road capability.

What engine is in a Grand Cherokee?

5.7L HEMI® V8 Engine.

What is the difference between 45RFE and 545RFE?

The 45RFE and 545RFE are identical mechanically. The difference is in the software. Before you drop the transmission, though, pull the trans oil pan off and look at the valve body. On the passenger side of the main valve body is a cover plate that covers the accumulator pistons.

What is the difference between a 545RFE and a 45RFE transmission?

The only difference between the two trannies is that the 5-45 has a . 67 final overdrive gear ratio. The 5-45 has all the same ratios as a 45RFE but adds one more gear to the end.

What vehicles have the 545RFE transmission?

The 545RFE made its way into Chrysler’s entire fleet of rear-wheel drive trucks, save for sedans and coupes: the Jeep Liberty, Dodge Ram, Dodge Dakota, Dodge Durango, and Jeep Commander. It was based on a similar automatic – the 45RFE.

What does MJ stand for Jeep?

MJ – “Metric-ton Jeep” (or something like that, I know the M is for Metric)

Which Jeep has a 5.7 Hemi?

Another great 2020 Jeep Grand Cherokee engine option that we will highlight is the 5.7L HEMI V8 engine. This engine offers excellent performance output of 360 horsepower and 390 pound-feet of torque.