1999 GMC Sonoma Truck wont start.

  • 1 POST
  • 1999 GMC SONOMA

Engine Mechanical problem
1999 GMC Sonoma 6 cyl Four Wheel Drive Automatic 170000 miles

After being parked for two days the battery went dead and the truck wouldn't start. The battery has been charged and attached to a battery charger while trying to start the truck. The engine turns over but will not start.

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have the same problem?
Monday, October 25th, 2010 AT 10:00 AM

1 Reply

  • 77,150 POSTS

Cranks but no start condition:

Get a helper disconnect a sparkplug wire or 2 and ground it to the engine at least 3/16 away from ground -have helper crank engine over-do you have a snapping blue spark? If so-you have a fuel related problem, Do you hear the fuel pump come On when you turn key on? If not check fuel pump fuse and fuel pump relay if so, check the fuel pressure to rule out the fuel filter/fuel pump/pressure regulator and listen to the injector/s are they pulsing or hook up a noid light. No snapping blue spark continue to troubleshoot the ignition system-power input to the coil/coil packs, coil's resistances, distributor pick-up coil, ignition control module, cam and crank sensors and computer Note: If it doesn't apply disregard it.

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Monday, October 25th, 2010 AT 10:45 AM

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