Scotty,
Against your wise words, I bought a GM...
A 2011 Silverado LT with the 5.3L Vortec with the 6 speed automatic.
It has 155k, no check engine lights, but does have a service airbag light. But I don't care much about that one.
Engine runs good, but rumbles with a shake at idle. Subtle and occurrs every 4 or so seconds. Occurrs in idle-drive AND idle-park.
Truck shifts real hard in low gears, down and up shift. Gives you a real bang. Doesn't seem to be slipping. Does great as a whole on the highway. No transmission codes, pending or current.
-Fuel pressure is 42-44 PSI at idle.
-At idle, Throttle Position Sensor reads 14% throttle.
-New spark plugs.
-Lucas oil fuel system cleaner, no results.
Army vet, and Scotty Kilmer Youtube-Channel Vet... so you would think I would have made a better decision!
Anyways,
I'm stumpted. S O S !
-Mike, New Hampshire
Fuel pressure sounds low to me.
Hy!
Do you still like it? If not, sell it and get something more reliable.
Good luck!
