99 suburban engine code

i have code no p1345 ckp/cmp correlation, what is it. thank you.

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Usually the distr has been moved, throwing the cmps and ckps out of synch, you need a scanner to reset this.

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ya your dist. has been moved you may have had engine work done, where the dist. was out (intake gasket?) in which case it may have to come out and be dropped back in right or if this just happened, you may be able to just turn the dist. to get the timing within range. but you will likely need a scan tool to do this
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