P0304 help stabilitrac no telated code


New member
Buick Ownership
2013 verano
Original code was p0010 for cps but wasnt a dire issue eventually it started running funny and it had a new code p0304 for faulty injector cylinder 4 and no longer showed the cps solenoid code but the vvt solenoid after changing vvt solenoid with out injector due to waiting for it to ship car ran great for about 36 hours suddenly i hit a little bump inthe road and the service stabilitrac message came on along with a flashing service engine light checkedcodes and now it reads p0204 p0300 p0304 and p2157 any idea what correlation this has with stabilitrac if any at all and is the injector that i have shipping going to clear up any current issues
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