Cold weather idle feature works just fine on my 01.5.

 

On a 2002, the software is already in the ECM. They just hook up the DRB(sp) and enable the 3 cylinder idle feature on page two. That turns on both high idle and 3 cylinder idle. My 2001.5 had to be flashed and it took a couple trips to dealers to get it turned on correctly. Have them remove the DRB and connect it again and verify that 3 cylinder idle feature is enabled before leaving the sealership. SNOKING