P0301 GMC -

Question

Will this code cause my vehicle from stalling on me then not starting.... I let it sit overnight then it starts! Thanx

Answer 1

HI there,

This code is for a cylinder #1 misfire. This will cause rough running, but should not stall and cause the issue with restarting. If however the truck needs a new set of spark plugs, this could cause it to not start once it is hot. It's completely possible that even though the misfire is on cylinder 1, all the plugs are bad.