Question about 1997 Chevrolet Tahoe

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I have a 1999 gmc 2500 van. P1345 code coming up

Changed intake gasket. Now P1345 code is coming up. Runs fine tho. Could the timing need adjusted? If the timing isn't set just right could the code P1345 come up?

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I have done this before on these --- the distributer is off 1 tooth.when you pulled out the distributer some times the slot that runs the oil pump when the distributer go back in it finds the slot but it will be off 1 tooth.

Posted on Feb 14, 2009

  • mike loshbough
    mike loshbough Feb 14, 2009

    please read my solution thanks


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Hi the code 1345 is the is either the crankshaft position sensor or the camshaftposition sensor cirrelation both of theh or only one willcause the light to come on.check your timing

Posted on Feb 13, 2009

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Hi Tim,
Please check that there is no leakage in your water cooling system. If there is leakage, it causes the engine to heat up and burnup the gasket. You need to make sure your thermostat is also reset properly depending on the weather condition in Maine.

Kind Regards & Best Wishes

Oct 19, 2009 | 1994 GMC Sierra

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I changed the intake manifold on my 1997 gmc safari van that has the 4.3L engine because of a coolant leak. Now the check engine light comes on. it puts out 3 codes ( PO102 ) ( PO300 ) and ( PO507). What...

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GMC Sierra 2002 4.3 V6 P1345

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Trouble code 1345 crank sensor/camshaft sensor correlation

I had this same P1345 code on my 1998 GMC K1500 5.7 for about 2 years. Each time the code was erased, the "Service Engine Light" came right back on with the same code. I tried replacing the cam sensor, but that didn't solve it. I had the timing adjusted, it was out -13 degrees. After adjustment, the "Service Engine Light" went off, but only for a short time. Adjusting the timing is just a temporary mask on fixing the real problem and eventually you will run out of adjustment. I read about this same problem on another forum and someone recommended changing the distributor gear. So I checked the gear and a the teeth were worn. Replaced the gear ($35 part), readjusted the timing and the light has been off ever since. Apparently the gears in 96-99 are soft and wear enough to throw off the timing. This code is telling you the crank and distributor are out of sync. So before you start buying sensors and other misc. parts, try the distributor gear if you are getting a P1345 code.

Mar 03, 2009 | 1998 GMC Sierra

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