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Dick Butler · 12-23-2010, 04:28 PM

New mid sized GMC SUV. purchased the V-6 with 6 speed automatic. At 65MPH it kicks down on any grade. I believe 10 or 15 HP would help and help MPG also as you can watch the gauge drop on Highway speed.

12-23-2010, 04:28 PM	#3
Dick Butler VIP Member Join Date: Oct 2002 Location: Richmond Indiana Posts: 1,196 Likes: 5 Liked 32 Times in 19 Posts	Re: HP for street Terrain New mid sized GMC SUV. purchased the V-6 with 6 speed automatic. At 65MPH it kicks down on any grade. I believe 10 or 15 HP would help and help MPG also as you can watch the gauge drop on Highway speed.