Quote:
Originally Posted by dondon
As for dealers... I've found a locally owned not Chevrolet dealership that keeps me quite satisfied, prices aren't that dissimilar to a dealership, but I trust them and that's more important to me.
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You know best, but these cars are older than a lot of people working at some shops, and most(?) have never seen an LT5 before. These pages are filled with horror stories. Just sayin. SGC is Georgia, if that helps.
As for the high pressure reading, depending on whether there is perhaps air in the fuel line, the pressure may not peg at the 55# due to the secondary pump is shut off in a couple seconds. With the ignition switch OFF, connect the positive terminal of the battery to the red test connector on the wire loom and see what your fuel pressure is then. After a couple seconds, with both pumps running, the pressure should be in the 52-55# range. If it is, then the pumps are running.
However, see if you can find an extension (got mine at AutoZone too) to observe dynamic fuel pressure. Only then you will know if the system will provide fuel at the rate required at WOT. If, for example, the fuel filter is choked up, the pressure will drop across the filter, indicating the pumps are probably OK, but there is a flow issue.
Change the pumps if you want. But, I hate to see you changing parts in place of troubleshooting. That is how unforeseen variables get introduced to the initial issue, e.g., infant mortality, is the term applied to new parts that failed "out of the box".
Good luck!
P.