98 blazer p1345
 

I had repaved the intake manifold gasket awhile ago and had a ECP/PCM code so I took it in to the shop because I had lost the timing when doing this repair and had got it running never had an engine light before well after I got it back the crankshaft camshaft correlation code popped up and ran horrible well today I have it to where it's running great again but still have that code every time I go clear it it pops up immediately again any help or suggestions