Question about 2003 GMC Yukon XL
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Posted on Jan 02, 2017
leaking suspension air bags is the most common cause, but the system can be tested for trouble codes, I suggest u do so, only the dealer can do this, but guessing about what the problem is can get very expensive very fast.
Posted on May 13, 2009
The crankshaft sensor determines when to fire the plugs; if it has failed, no plugs will fire.
If you have no mechanic friends who know how to test this sensor, you should probably invest in an aftermarket service manual. They have simple tests for most sensors and conditions that don't require costly equipment or detailed knowledge.
I prefer Haynes and they are available on line here:
Haynes Sonata Manual
You may also find them elsewhere for a few dollars less.
Posted on May 18, 2009
Sounds like the timing belt broke. Unfortunately this vehicle was not equiped with no contact valves so if that is the case you will need to have the engine and Head rebuilt. If the crank position sensor can't sense the position of the crank it should shutdown the electrical to keep you from damaging your engine.
Posted on Oct 09, 2009
their is only one sensor and it could be on one of the cams ,or on the flywheel
Posted on Dec 08, 2009
Testimonial: "thanks, u solved my worries. I actually had changed that sensor but i kept getting online information that it should have two! many thanks."
Tips for a great answer:
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P0335 Crankshaft position (CKP) sensor -
possible causes: circuit malfunction Wiring, CKP sensor, ECM
P0336 Crankshaft position (CKP) sensor - range/performance problem
possible causes: insecure sensor/rotor, air gap, wiring, CKP sensor
Is the car running? If yes, check for a loose connector on the crank sensor. You may need to take the connector off and see if there is any corrosion on the terminals. If yes, do your best to clean with a small screwdriver and/or electrical parts cleaner.
From what I can tell, the sensor is on the bottom of the engine near the idler arm, but it has a long pigtail such that the connector is on top of the engine by the fuel rail. See pictures below.
for the misfire,
Please see my tip at http://www.fixya.com/cars/r6715318-causes_gasoline_engine_misfires . These are generic instructions. If you get stuck or need specific instructions for your car, please get back to me with model, year and engine info.
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