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JohnW (not verified)    March 30, 2025 - 10:04AM

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I drive a 2010/4.8L-Reg cab/2wd, the absolute basic model with 115,000 miles on it... no issues. Highway MPG new was 18 when new. I finished a 400 mile run yesterday on the interstate driving between 75-80 (passing a few times a little higher) with the air conditioner running and got 17. Chevy was concerned with the transmission. If you hit the trip odometer setting past the trip it gives you transmission running temperature. Anything over 225 indicates real issues. Mine runs between 145 - 165.

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