LT1-LT4 Modifications 1993-97 Gen II Small Block V8

Hvac delete no start even after VATS BYPASS

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Old 05-05-2014, 11:37 PM
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Default Hvac delete no start even after VATS BYPASS

I have spent numerous hours chasing this down .time for the lt gurus to chime in. I started with a ac delete removal of all Hvac components. After reassembly no start when I turn the key I hear the fuel pump trigger but no turn over of the starter. I turned the key numerous times to roll the car during assembly. I have bypassed vats still nothing . Please helppppp
Old 05-05-2014, 11:40 PM
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Battery fully charged to all electronics . Started every time before this mod. Ton of headache for weight savings of 30+ lbs . Was it even worth it???questionable.
Old 05-05-2014, 11:42 PM
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Only thing disconnected under the engine bay was the battery and PCM
Old 05-06-2014, 08:03 AM
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Don't know the year of your car, but you can look at the starter system schematics in the electrical section of my website.
Old 05-06-2014, 09:04 AM
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1995 z28 camaro
Old 07-31-2015, 02:44 PM
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Back from the dead...

Did you ever get this problem resolved? I'm having the same issue after I deleted my HVAC, I have all power, but no crank
Old 08-05-2015, 10:32 AM
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Make sure that VATs modual back up. It is located somewhere behind the glove box. I had a buddy do this on his 94 while installing a cage. We left that modual out and it would start and run for about 3 seconds then quit. Hooked it back up and was ready to go. He also had it tuned out in the PCM. Not exactly the same problem but may be something to look at. Something else you can do is ground the wire going to the start relay that comes from the VATS modual. I ran into this with a battery relocate. Look at shbox's schematics and you can tell which one it is.
Old 08-07-2015, 10:38 AM
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Start with the easy stuff, check the pcm fuse on the drivers side panel, I think its fuese #5. If this is blown, all light and gages will work but the starter will not turn over..



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