Have taken two extended trips and
average 17mpg. Engine performance is
acceptable, except to pull any grades
must keep in trailering mode to keep
trans from downshifting and over-
reving. Have 12000 miles now and at
5000 developed clunk in the
trans/driveline that is getting worse.
GM says "normal" and refuses to fix.
Cab roof is flimsy--buckles if windows
rolled down at 60mph.
Ride and handling.
QUALITY. Should not be calling poor
quality of trans/driveline
construction normal. Beef up the thin
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