Fuel pump can do many weird things.
NOT all of them will just halt and not work.
Some will keep working, but has low to no
You say 1 wire is not reading, was the key on
to get this reading? 1 full power, 1 ground, 1 lets
it turns on from relay?
Check EGR (Clean it your self) Check Pressure censer
and after all that, yeah, Fuel pump.
Tahoe is notorious for them to go out!
Also, 12 hours after it sits? Not 5 minutes?
Or less then an hour?
Thursday, June 25th, 2009 AT 10:03 PM