Ram 2500

Replace Transmission Cooler Return Filter if it Has "AB" Suffix on Dodge Ram 2500

Problem Description and Possible Solution

If the transmission delays initial gear engagement after being parked overnight or longer, it may be due to a suspect transmission cooler return filter. If the transmission was recently serviced and the part number for the cooler return filter contains an "AB" suffix at the end, a new filter should be installed.

Problem Data
RepairPal Verified
Average mileage: 123,700 (110,000–137,400)
Drive Train affected: 2WD
6 model years affected: 1996, 2002, 2003, 2004, more2005, 2006
7 people reported this problem
Viewing 1 - 3 of 3 comments
Transmission is slow to engage in reverse or forward. It has a whining noise. Just bought truck it looks to have a reman trans in it, just replaced ecm. No check engine light.
After sitting for 24 months transmission delays shifting 2nd to 3rd.
My truck does exactly this. I put it in gear after it has been parked overnight and it takes a few seconds to engage in gear. I recently had my transmission replaced.