No fuel no spark after transmission swap

Asked by Herbie Nov 28, 2017 at 06:35 PM about the 1996 GMC Sierra 1500 C1500 SLE Extended Cab Stepside SB

Question type: Maintenance & Repair

After I swapped the transmission on my 96 GMC
Sierra 5.7 L 2 wheel drive I cannot get the truck to
start from what I can tell I'm not getting any fuel or
spark but the truck is turning over I've replaced the
battery the starter the alternator plugs and wires
and nothing also my OBD2 reader will not read the
vehicle after I swapped the transmission any help
with this would be greatly appreciated I am
thoroughly stumped

2 Answers
38,855

beatupchevy answered 6 years ago

is there a chance the computer was toasted by high current during the operation , if the code reader can't access the computer maybe it's toast , I don't think the trannys of those years where linked to the computer ? Are you using the same key as before ?

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Luckylogger0000 answered 5 years ago

Same problem on mine. Check the 20a pcm fuse in the fuse box under the hood. :)

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