My advice would be to get a v8 harness for your 01 and keep the drive by cable peddle. It's more trouble than it's worth to switch to DBW. If you get a 99-02 harness and throttle body, everything will plug in and run fine without making any changes to the fuse box or BCM. If you do decide to run the older harness you will need a new oil pressure sending unit. Part number ACDELCO d1818a. 50 dollars on amazon.