Matt behrman
Newbie
Can someone plz help. Ive recently installed a L29 454 out of a 96 suburban in a 92 sliverado. The motor orginally had a auto transmission behind it but i kept with the 5 speed manual that was in the 92. I striped the L29 harness down to a standalone for the engine and orginally i was going to use the black box pcm. The motor would fire up with starting fluid. The ignition system would work but the injectors wont fire. So i scratch that idea and after reading up on a 411 pcm it sounded easy and overall better. So i pulled a 411pcm out of a 2001 blazer v6 had it programmed by hp turners of a base tune of a chevy express van. Got the pinout from lextech did it to the T and triple checked everything and it wont start doesnt have spark either what happen.