Jeff:
When mine started acting up it only did it at certain times under certain conditions. Low boost partial throttle like coming down from eisenhower tunnel,(or any other decent hill for that matter) running 2lbs boost and 70mph with just a bit of pedal then you hit the go pedal and it does nothing, then it would clear up and run fine. As time went on it did it more frequently and took longer to clear up. Aside from the dead pedal it would throw blue/grey smoke like crazy. Instead of maybe doing it once it would do it 3 times, instead of it acting up for 2 second it might be 5 seconds. Mine only did it under those conditions always coming down hill with low boost and partial throttle. I tried all kinds of things to keep it from happening keeping the rpms up higher, running slower, in od out of od, edge box on box off made no difference. The first trip to the dealer I removed the box, took it in and they saw the codes, but told me they couldnt duplicate the problem, they also checked the lift pump but found the flow to be within spec. Then went out of town and it did it again, so I took it back and got the same response except this time they told me star would not authorize the repair unless it did it again. They did say they were sure it was the pump but just that star would not authorize it. By now I was a bit peeved, everyone agreed it was the vp except star would not authorize and I had to go out of town again with the truck this was a friday. SW said see you on monday because the code will be back by then. Sure enough I left to go out of town and going west down eisenhower it did it again. I finished my trip, getting home was not hard but it was doing it much more frequently and taking longer to clear up. I was back at the dealer on monday and they said they would take care of it regardless of star (who did authorize it this time) but then had to wait over a week for the pump to come in. Truck never died, never had an issue starting ran great except for when it was actually wiggin out for seconds at a time, never set the check engine light, it just set the code. So in the end 4 trips to the dealer to get it fixed.