PO340 Camshaft Circuit - 5.7L Vortec 2WD Suburban

[shultzee13]

Replaced the distributor cap and rotor on my 5.7L 2WD Suburban (98) and now I am getting a code P0340 Camshaft sensor circuitry. I was VERY careful to put it all back and not budge anything. I originally had a P0300 and found that my rotor had actually broke off at the tip. I replaced it and now this…. ENG1 fuse still good and nothing I've googled has fixed it. I did pull a few spark plugs and they have a white tip from overheating. Bad spark plugs cause this code to set? Thanks
BTW - I did replace cap and rotor with AC DELCO OEM