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Posted on Jan 02, 2017
SOURCE: 1997 GMC Yukon won't start.
WHEN YOU REPLACED THE FP DID YOU OR THE DEALIERSHIP REPLACE THE FUEL FILTER MAYBE YOUR PROBLEM ....
Posted on Dec 09, 2009
Testimonial: "They did replace the filter but thank you very much for the tip."
If it is cranking with out turning over I would check the fuel pump and ignition relay, crank and cam sensors.
Basically you need to figure out if you have a spark issue or a fuel issue. (as long as you didn't have a serious overheating problem). One way to help you figure this out is by spraying in some starting fluid while cranking the engine. If it starts you have a fuel problem, if nothing then you have a spark problem (assuming you didn't blow the head gasket from overheating and was running normally before this happened).
Based on what you've already done here are my recommendations:
No spark: check ignition relay
No fuel: check fuel pump relay (aka shutoff relay, aka fuel pump shutoff relay), crank and cam position sensors, fuel filter.
There is also one other possibility, that the timing belt snapped. You would need to remove the timing cover to check this.
Posted on Feb 05, 2010
Try the crank sensor this is the sensor most likely to cause this not the cam sensor. To get to the crank sensor you will have to jack up the passager side of the car and the sensor is located on the transmission bell housing about 3/4 of the way up on the trans were it connects to the engine.(all on the passager side of the trans) It has a 3 wire plug and one 10mm bolt that holds it in. Hope this helps
Posted on Mar 29, 2010
I would check the timing belt probably broke. Best way pull the cam sensor out take a flashlight shine it down in the hole and have someone turn it over. u should see it turning if you don't the timing belt is broke. good luck
Posted on Mar 29, 2010
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