1986/1996 conversion


New member
Nov 10, 2016
I'm putting a 1996 chevy 5.3 throttle body into a 1986 chevy k1500. Everything is mounted and installed. wiring harness is ran and everything. I have fuel to injectors, injector pulse is good, spark is good, compression is good, everything is hooked up that should allow the engine to fire. My issue is I have crank but no start. I'm wondering if anyone can tell me what sensors if any will cause the crank no start on the 5.3. Thanks.
Last edited:
Nov 26, 2006
Chandler, AZ
Re: 1986/1996 conversion

I think you might be off on your years, as the 5.3 wasn't available in 1996.

I'll assume you meant a different year 5.3 and go from there

The PCM that controls the 5.3 used a vehicle anti theft system (VATS) and you may not have that setup correctly or turned off. It will require a tuner to do it. That would be the first place I would look.