Don Lewis: you are on the right track. The computer controlled engines and trans combo of today are considerably better than the old method of trying to do the gear thing. Take advantage of the modern technology and get that 5.3. I too can get 19 MPG with my GMC pickup. It has 186,000 miles and still runs as good as ever even though it has NEVER had a tune up. In fact other than a fuel pump I have never touched it.
