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

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.

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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
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Viewing 1 - 3 of 3 problem details
2002 Dodge Ram 2500 - 2WD 137,400 mi,
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.
2005 Dodge Ram 2500 - 2WD 110,000 mi,
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.