1998 GMC Sierra
Problem for GMC 1998 Sierra

I have a code 1345 set each start cycle. I can




By buermans on Nov 06, 2009

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I have a code 1345 set each start cycle. I can clear the code when running. I have not put it through the hoops. I believe it will stay clleared untill the next start cycle.

Solution #1

posted on Nov 07, 2009
Not Rated)

Auto Master

Rank: Guru  GMC Cars  Expert
Rating: 89%, 35 votes
Hello,
Ok it appears you have a cmp corelation offset code. If you have a scanner you can check the timing if not you will need one. This code usually sets when you have more than 16 degrees offset. the specification is 0 degrees CMP ****** +- 2 degrees. It is also possible you have worn teeth on the distributor (sharp edges) this will cause it to be out of time.

I hope this helps.

Roy
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