2005 Silverado 4.3 to 5.3 throttle troubles

[farmtruc]

if the pcm was programmed with your vin, it is not a compatible OS and parameters for a drive by wire setup.

[jdnabholz]

How hard would it be to just run a cable throttle body? I have all of the parts for a DBC setup so the programming would be the only question. The truck was originally DBC and the ECM currently in it was originally a V6 ECM.

[Gemini]

My truck originally had a 4.3 with a DBC throttle body. I attempted to switch over to DBW when I did my swap and it was more headache than it was worth. To switch to DBC you would need a 99-02 PCM, wiring harness, DBC throttle body, pedal, and the bracket that bolts to the intake to hold the cable itself. Also you will need a new oil pressure sending unit with the older harness. acdelco part number: d1818a. A forum member, allblacksierra switched from dbc to dbw on a 4.3 to 5.3 swap if your'e interested in searching through some of his posts and continuing to do the conversion. My advice would be to stick with whichever drive by setup the truck came with from the factory. Hope this helps and good luck with the build.