1999 GMC Sierra engine won't start when turned over.

Tiny
1999GMC
  • MEMBER
  • 1999 GMC SIERRA
  • V8
  • 4WD
  • AUTOMATIC
  • 250,000 MILES
Hello. Truck was running fine. The when I tried to start the engine it didn't start but head lights worked radio worked. Got a tow home and tired disconnecting the battery. Then tried to start it but it didn't. Finally the neighbour came out and offered to give me a boost. We tried and tried and ect. Looked at the fuse box and chaged some of the fuses. Nothing is working


so if u have any ideas please write back to me thanks
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Monday, November 9th, 2009 AT 7:30 PM

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Tiny
JDL
  • EXPERT
Welcome to the forum, are you saying it cranks good but won't start, or it won't even crank? If your saying it won't crank, make sure the battery has a full charge and the connections are good, then check the circuits at the starter relay in the fuse box under the hood. If it cranks good but won't start, have a helper crank it, while you check for spark at the plugs. Use a gage and check fuel pressure.
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Monday, November 9th, 2009 AT 9:10 PM

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