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.Google+
Car Problem Reports
Jeep Grand Cherokee Replace Transmission Cooler Return Filter if it Has "AB" Suffix At End
Jeep Grand Cherokee Problem
Drive Trains Affected: 2WD, 4WD
Average Mileage: 92,714 mi (41,000 mi - 156,000 mi)
Visitor, 2005 Jeep Grand Cherokee, 4WD
2005 jeep GC Limited 4 WD. Trans slippage after sitting, then ok after a mile. Has been doing since almost new. Changed trans filter and oil at 30k and 60 k. Still does it....
On cold start when the transmission goes closed loop (this is a few minutes into driving) the transmission will stall the engine when coming to a stop. At that time there is also delayed engagement, the stall is due to delayed disengagement. After changing the transmission filters (after I read this link) the stalls no longer occur and engagement is normal.
Thanks! This advice was right on...
Visitor, 2001 Jeep Grand Cherokee, 156,000 mi
clogged and fried trans
Visitor, 2006 Jeep Grand Cherokee, 4WD, 70,000 mi
same as already stated delay in engagement
Visitor, 2005 Jeep Grand Cherokee, 4WD, 41,000 mi
Delayed shifting after being parked overnight
Visitor, 2002 Jeep Grand Cherokee, 76,000 mi
transmission delay if car sits over night