Chevy/GMC Small Trucks Forum Discuss the Colorado, Canyon, Sonoma, S-10, etc here!

3.5 I5 vs 3.7 I5?

Old 06-16-2010, 09:40 PM
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Default 3.5 I5 vs 3.7 I5?

I'm currently shopping around for a new(er) truck, and the Colorado\Canyon is on top of my list

anyways the 06/07 models are in my price range, and I'm wondering if there's much difference in the two engines. Power wise the difference seems negligible between the two motors ( yes i know there's 22hp more in the 3.7)
Old 03-22-2011, 11:18 PM
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Well this is an old thread, but no one answered so I will. The 3.5 had head problems that they fixed with the 3.7. A great many people even needed to get a new head on their 3.5. I don't remember exactly what the problem is, but if you can afford to get a 3.7 you might as well. I do believe that GM will pay for the new head if you have the problem on the 3.5.
Old 05-04-2011, 08:21 AM
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The gas mileage ratings of both models are same, but Colorado can be had both manual and auto transmission, while 3.0-L Canyon is mated only to a automatic gearbox.

Old 05-25-2011, 12:42 PM
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Go with the 3.7 for the horse power alone. Thats another reason it came out among all the other problems.

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