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  1. #1

    Default Do all 00-05 Z71 Tahoes accept E85 fuel?

    I see all the 2005 model Z71s state they accept E85... does that apply to the 04s, 03s, etc?

  2. #2
    Jr. Apprentice
    Join Date
    May 2009
    Location
    Charlotte NC
    Posts
    29

    Default ???

    It should have the Flex fuel on the back of the car

  3. #3

    Default

    Quote Originally Posted by truheel1 View Post
    It should have the Flex fuel on the back of the car
    Not true, my 07 silv has the flex fuel sys but didn't come with the badges.
    Peter

    2007 Silverado LT Crew NNBS 5.3
    Stock 20"
    Black Powdercoated Billet Gas Door
    LineX Bedliner
    Go Rhino Dom II Bars
    Work in Progress
    1952 Chrysler 2dr Windsor } Mine and Dad's
    1966 Ford Mustang

    Former Cars
    2000 civic hx Moded
    1993 Probe simi moded
    1985 Nissan 4x4 Kingcab

    So*Cal Group

  4. #4

    Default

    If you ever have a chance to look up a vehicle with the 5.3 engine in them on the GM Vehicle Information System, most if not all are listed as Vortec 5300 Bi-Fuel (meaning flexfuel capable) from the first run of that engine in 99 trucks. I believe all tahoes of that style are e-85 capable.

    I think its odd that it took them so long to start to advertise (or even put badges on) for flexfuel systems. Either way though, ethanol hasn't caught on in alberta yet.

    2008 FORD F350. My new all-around truck.
    2001 Silverado Reg. Cab Not-So-Base -- SOLD
    2003 Avalanche Z71. No Cladding. Check out my Mod thread. - Crashed. Will be rebuilt soon.
    1974 Triumph Spitfire 1500 - Work in Progress
    2003 Sierra 3500 Duramax. The Newer, Better Work Truck -- FOR SALE


  5. #5

    Default Z71 Ethanol 85

    Hello All !

    I'm a just brand news (proud) Z71 Owner (2003) and i have seen a sticker near the engine on wich is write that the engine accepte Gasoline or ethanol from E0 to E85 !!!! Is it true ? in the year 2003, Chevy Engines are already performed to run on ETHANOL ? (engine : Vortec 5.3L 270cv)

    i ask the question because in this f..... country (France) ... They "discover" the Ethanol 3 or 4 years ago !!!

    Can i put 100% of Ethanol in my Tank ? is it better to put half gasoline ans half ethanol ? is it "dangerous" for the engine ?

    Thanks a lot for your responses !

    Regards, Merry Christmas

    Joe

  6. #6
    Sr. Apprentice itsabowtime2's Avatar
    Join Date
    Dec 2009
    Location
    TN, via MI, OH and NY
    Posts
    61

    Default

    From the information I have seen, there were some 5.3's made that were NOT E-85. The only place my truck that has the E-85 notification that it is OK to use is on the inside of the fuel door. From what I have found, about 2% of the 5.3's from 2002 were not designed for E-85.
    2003 Chevy Tahoe Z71 4x4
    Other vehicles:
    2000 F250 Super Duty Crew Cab 4x4
    2005 Dodge Grand Caravan
    Toys:
    3055 Bayliner Ciera (2x SBC)
    Sea Doo GTX Limited
    Sea Doo XP (currently rebuilding the engine)

    Life is short. Boats and trucks are cool.

  7. #7

    Default

    Quote Originally Posted by itsabowtime2 View Post
    From the information I have seen, there were some 5.3's made that were NOT E-85. The only place my truck that has the E-85 notification that it is OK to use is on the inside of the fuel door. From what I have found, about 2% of the 5.3's from 2002 were not designed for E-85.
    wow. i wonder why they even bothered with that 2%.

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