1999 GMC Suburban

JASON.BRIGHT

MEMBER
1999 GMC SUBURBAN
V8
2WD
AUTOMATIC
190,000 MILES

What can I do to fix the code p1345 I think that it. It said crank sensor and camshaft sensor not corrlating. And how much play os supposed to be in the distributor it seems to have alot of play

Saturday, February 20th, 2010 AT 12:23 PM

7 Replies

DOCFIXIT

MECHANIC
18,828 POSTS

Hi
Try and move rotor any movement? If yes then dist is faulty. If no check for wire chaffing or loose connections. Also worn timing chain can cause code. Without a scan tool to test with your down to hunt and replace.
Hope this helps
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Saturday, February 20th, 2010 AT 12:44 PM

JASON.BRIGHT

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6 POSTS

Thanks for the response
so a scan tool will tell me exactly if its the timing chain
because autozones code reader told me what the code is

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Saturday, February 20th, 2010 AT 12:48 PM

DOCFIXIT

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Scan tool such as a MODIS is a expensive computer that needs training to operate ie. Need to take to shop.
The loose dist, timing chain and wiring are a look at and see. Can you move rotor?

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Saturday, February 20th, 2010 AT 12:54 PM

JASON.BRIGHT

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6 POSTS

Well I took off the rotor cap and button to inspect the place where the camshaft sensor and where the button mounts I turned it a little. It can also lift up about an 1/8th of an inch didnt know if that was normal. But the timing chain I would have to remove the front assembly and balancer to see it right?

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Saturday, February 20th, 2010 AT 12:58 PM

DOCFIXIT

MECHANIC
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With rotor on can you move it back and forth? To check chain rotate engine by hane ratchet on crank bolt to TDC with cap off note position of rotor. Turn ratchet countyer clockwise till rotor moves if more than 10degs then chain has took much slop.Chekout cranksensor they tend to go bad. See diagram