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I just got a 2003 Tahoe lt 4wd and thinking about adding a leveling kit 1.5" or 2" any suggestion on what brand or type? I really don't want my ride to suffer if I can help it.

Ok thank you. I was thinking their was a difference between flex and a regular motor.

What is the fuel pressure suppose to be on 03 Tahoe 5.3 flex fuel?

I thought flex fuel was a lower psi?

Any one? I tested fuel pressure test and it was 48psi key on and 42psi running is this correct pressure for a flex 5.3? It also seem to idle funny when weather is around 30 degrees.

hi im brand new to the forum I seem to be having trouble try to search this for some reason. I have 2003 5.3 4wd Tahoe with 127,000 miles on it. my engine light came on about two days ago when it 30 degrees for codes po171 and po174> when I search this it came up to be a lean bank so I cleaned...