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  1. #1

    Default Active Fuel Management in 2009 Suburban

    Hello all. I am looking at getting a 2009 Suburban LTZ but I just noticed that the brochure I have for the 2009's seems to indicate that only the 2wd models had the 5.3L engine with Active Fuel Management. The 4x4's just had a regular 5.3L. Can anyone confirm or deny this for me? I'd prefer to get the 4x4 for when I need it, but want ot save gase when I don't need 4wd.

    Thanks.

  2. #2

    Default

    the mileage difference between the 2 isnt all that ,uch, 1 mpg at the max. a good tuner and CAI with exhaust will pick up what you will loose with the 4X4

    Alex


    2011 GMC Sierra SLE 5.3 Z71 4X4 Stealth Gray Metallic / 2004 Chevy Impala LS 3.8 Cappuccino

    Tow mirrors - Diablew Tuned - Flowmaster Regular 40 - Ready Lift 2.5' lift - BFG LT A/T K/Os - Carr Light Wing - TruckLite LED lights - Optima Red Top - 50% Front Window Tint - Line-X bedliner - Airaid MIT - Tekonsha P2 - ARS Billet Grill - Fia custom fit seat covers

  3. #3

    Default

    I would be happy to look into this for you as well. Are you considering the 1500 or 2500?

    Tricia, GM Customer Service.

  4. #4
    Jr. Mechanic Sandhopper's Avatar
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    Feb 2010
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    Amarillo, Texas, United States
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    120

    Default

    Not sure about 09 but our 10 4x4 has AFM... It does ok on really flat or slight down hill grades but I am not 100% sold on it. We get 20 mpg on highway trips. better than the 17 my silverado got but the burban has more power and torque and a 6 speed trans and a taller rear ratio...

    2010 Suburban Z71 5.3 A6, Sheer Silver, Ebony Interior

    2004 Lexus RX330 AWD - Netune Blue Metalic

  5. #5

    Default

    I am looking at the 1500. Thanks for your help!

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