<div class=”d4p-bbt-quote-title”>Mr.Beads wrote:</div>
Tbh I’m utterly shocked you got anything over 16 with the 6.2l. Loved my 08 but that thing was a gas hog. Had it tuned up, ran straight, never anything over 15 to 16.My 05 5.3l Tahoe did pretty well tho, had that thing running around 18mpg city.
Are you talking 6.2 or the 6.0? The 6.0 was a pig, but the 6.2 is not.
Haven’t heard of a 6.0 in a GMC but I’m not a big wrench guy either. 6.2l. known handful of other 6.2l guys as well that never saw much for mpg either.