1996 GMC C2500 no spark and computer location

Tiny
SEAN SMITHERS
  • MEMBER
  • 1996 GMC C2500
Computer problem
1996 GMC C2500 V8 Automatic

i have changed the motor from a 6.2 diesel to a 350 gas engine, I have no spark and have changed all modules and pickup modules, I was told it may be the computer, I would like to no where its located and if u have any other suggestions as to what problems I may check. This unit was running with the 350 and just didnt start one day.

updated 2-5-09
hi there it sean again I am still haveing problems with this truck I can't find the computer its not were you said it would be still no spark but while cranking over the carb is getting fuel I have tryed everything and afraid to let someone eles work on this truck cause it will cost me a fortune I am a liceance diesel mechanice and I am stumbed on this problem there are no no wire leading up to the dash board for computer I didnt do the chnge of eng nither someone eles did and the truck was running b4 I got it but when it was drop off to me it would start and I bought this outstanding truck for my daughter sweet sixteen and would love for it to run so she could drive it I have no more ideas what it could be I am hoping someone can give me afew more ideas
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Saturday, January 24th, 2009 AT 12:46 PM

2 Replies

Tiny
JDL
  • EXPERT
Did you use the computer from the donor vehicle, when you swapped engines?

My info shows the computer in on the passenger side under the dash, above the kick panel.

Have you lost anything besides spark? Is there an injector pulse with the engine cranking? If you do alot of cranking, you might disable the fuel system.
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Saturday, January 24th, 2009 AT 1:12 PM
Tiny
JDL
  • EXPERT
Hello, I don't know what modifications may have been done to the vehicle, you may not have a computer? Is it computer controlled? If that isn't a feed-back carb, I don't think it is computer controlled.

If all your missing is spark, check the primary circuits to the ignition coil. Is the coil remote from the distributor? The primary terminals are the small wires. I'm trying to picture your ignition set-up, if it isn't factory?
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Friday, February 6th, 2009 AT 7:30 AM

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