GM Repair Problems? Ask GM Repair Expert Now.
I am sorry your having this problem
can you get this to act up where it will not run and see if the engine will somewhat run on starting fluid ?
are there any codes being set in the computer at all ?
are there any codes being set at all ?
any access to a fuel pressure gauge to monitor fuel pressure key ON engine OFF when it will act up ?
the fuel filter is new ?
can you connect a fuel pressure gauge to the test port under the hood on the fuel rail and see what the fuel pressure is reading key ON engine OFF when it is acting up ?
we need to eliminate fuel pressure being the problem at this point