Posted 2/21/2011 14:06 (#1626986 - in reply to #1626975) Subject: How many miles to break in??
Ontario Canada
aje - 2/21/2011 13:59
I have about 6000 miles on mine. I get 14 on short trips and 16 with the cruise on for long distances. That compares to about 16 and 18 respectively with my '06 Duramax. Power seems about the same in both. Dealer says it need to be broken in yet.