Question about 1995 GMC Sierra

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Driving down road and it was like u just shut it off and now it will not start it has fire,compression,and fuel and does not have a broken timing chain

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Is the fire and fuel actually reaching the combustion chambers, or just to the coil and fuel regulator. If fuel and spark and compression are all present, and the timing is correct, there is nothing to stop it from starting. Something has to be missing from the equation. Try to start the engine, then pull a spark plug. If it's getting fuel it will be wet with gasoline. Now, with the spark plug still attached to the plug wire, lay the spark plug where you can see it while cranking the starter. There should be a bright bluish white spark at the tip of the plug. If the spark is weak and yellow looking, it may not be strong enough to fire the air fuel mixture.

Posted on Mar 13, 2011

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If there is no spark, I would check the ignitor in the distributor first. There are other possible causes, but this isthe most common.

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The fuel pump is dead. I would have the fuel filter and pump changed.
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