Ok guys here’s my deal. I’m doing a 5.3, 4L60 swap into a 69 Impala convertible. What I’ve done is used a 2001 Silverado 2wd, for a donor. I’ve used the engine, transmission, wiring harnesses, instrument panel, steering column. I just unplugged or cut out the airbags, abs system, and the hvac system. Now I’ve got everything in and I thought working but my scanner won’t communicate? I’ve checked all fuses and relays. Does it need the abs or airbag modules to communicate?.