Chevrolet Repair Questions? Ask a Mechanic for Answers ASAP
did you replace anything yet ?
are there any codes set at all in the computer ?
any access to a scan tool to view live computer data ?
we need to know if it is a specific cylinder or if all are showing a misfire to know which direction to go next
that will be very time consuming you need to plug in a high end scan tool and see which cylinder is misfiring on the current and history misfires in the data list
ok you need to view the live data list and view the current and history misfires on the data list