P0335 Chevrolet -

Question

cranks for 5 to 6 sec rpm gauge stop working and transmission shifts hard since rpm gauge atop i put new crank senor in all wires are good and all this happen after i change the oil

Answer 1

P0335 Crankshaft position sensor circuit

What set this codes is that the ECM see a cranking signal and there is no CKP signal recieved for more than 4 seconds. The wire going to the crank sensor are good? It usually has issues. When you replaced the CKP was there debris on it ? Use another CKP and suspect the ECM as problem.