I have a 2003 jeep cherokee w/4.0,auto. When you get to cruise speed and in drive gear vehicle won't kick down and shutter's when trying trying to drop down into lowers gears approaching stop. Transmission is rebuilt w/all new electrical inside it. We've had a scanner on it while having this problem and it appears to be electrical from the computer to trans. Could it be a failing computer or a grounding issue. Doesn't do it all of the time, any help??

Chowhound
Comic Vine
GameFAQs
GameSpot
Giant Bomb
TechRepublic