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  1. #1

    Default Service Stabilitrak, Service Traction Control, and Reduced Engine Power -- anyone?

    Driving to work this morning my 09 silverado 1500 stalled out twice. Both times the initial indication of "Stabiltrak disabled" came on, followed by "Service Stabilitrak" followed by "Service Traction Control" lastly followed by "Reduce Engine Power" and eventually the engine stalled out leaving me with only manual steering and brakes.

    Has anyone had this issue before? Truck only has 26,000 mi on it... still under warranty... but want to be as prepared for the dealer discussion as possible when I drop it off this evening (if I can make to the dealer).

    Thanks all.
    MJ

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    Last edited by ChevyFan; 06-24-2013 at 09:44 AM.

  2. #2

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    got it - thanks Mike. Going to have to take it in. Reduced power followed by stall keeps occurring.
    MJ

  3. #3

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    An update: Took the truck into the dealer. Turns out some '09s (and '07s, '08s) were made with faulty air intakes. The plastic on these intakes can wear down over time and fracture. The fracturing causes small plastic particles to enter the engine, and as a defense mechanism the computer shuts down stabilitrak, reduces engine power, etc to prevent damage. Just in case anyone was wondering.

  4. #4

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    i recently have run into the same problem. the only thing is mine is an 07, but i put a Volant Air Intake on it just under a year ago. I'm going to call the dealer tomorrow to see what they have to say. Ill most likely end up taking it in to get it looked at though. Im kinda confused tho why this happened to me because i put an aftermarket intake on it, unless its caused by something else. in addition to the service stability and service traction control, the shift between gears 1-2 are really hard. this makes me want to think its more of a computer issue/code error than a bad air intake.

    2007 Silverado Crew Cab
    5.3 L Vortec V8
    LT1 Package
    Driver Information Center (from gmpartsclub.com)
    Volant Cold Air Intake
    6000k HID DDMTuning Kit
    LED tailgate bar 3rd brake light
    LED lights for foot wells
    LED Side Bars
    LED Headlight Accents
    Husky Mud Guards

  5. #5

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    the guy at my shop said that he's seen this problem be caused by a number of factors, but most routinely by either 1) a faulty intake or 2) computer malfunction. Have it checked out, but by the sounds of it you're going to be a quick computer update away from being problem free. Good luck

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  7. #6

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    2 weeks and 4 shop trips later, I finally (fingers crossed) have resolution on this issue.

    -- FYI: My shop said GM for the past 6 months has been getting a number of inquiries as to the nature of the problem I had. There is currently a bulletin out (not a recall), so if you have these issues I'd recommend mentioning this as a possible problem --

    The Situation (along with a fist pump):
    - Driving along normally, not doing anything out of the ordinary, when the engine begins with a short RPM increase, followed by a quick decrease of about 1,000 RPMs, followed by the following warning indications in this order in about 3 second intervals: Stabilitrak Disabled, Traction Control Disabled, Service Stabilitrak, Reduced Engine Power. The engine then stalls out

    The Shop Trips:
    1) Replace Throttle Body Sensors: Shop tech advises the codes are due to uneven airflow in the engine compartment. GM recommends a swap out of the throttle body sensors.

    The same issue occurs less than 24 hours later

    2) Replace Throttle Body Wiring Harness: Codes state the same problem with throttle body. GM recommends now replacing the wire harness. Step is taken by shop tech.

    The same issue occurs less than 24 hours later

    3) Replace vacuum hoses: Code states the same air flow problem. GM recommends replacing vacuum hoses. Step is taken by tech.

    The same issue occurs less than 24 hour later

    4) Replace throttle body: Code states same problems. Throttle body is ordered (but back ordered because of the demand for the part given the issue), comes in 3 days later and is replaced.

    It's been 3 days and the issue hasn't happened again. I've heard it has the potential too though, and the next steps in the GM manual are replacing the Alternator, then the battery.

    MJ

  8. #7

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    I just bought a 2007 Yukon 2 1/2 months ago. Three days ago (Sunday) I came back from a short trip (180 miles total) to my brakes going out and a rotor basically grinding, terribly... Having to work Monday, I had to wait to have my father look at my truck. I went ahead and bought brake pads and a rotor to take to my father, for a quick repair. However, my traction control light came on for service & my engine light is blinking. My dad met me in town and we rode over to the dealer I bought it from and they hooked it up to the computer.

    It came up as cylinder #4. They replaced the injector. I went to pick it up and they said they replaced it but it still did not fix the problem. The computer indicated cylinder #1 this time. Drove my truck on to my dad's and he looked at it and changed one sparkplug and of course the brakes/rotor. He checked the cylinders, stems & valves... No obvious issues.

    My truck still has a miss, the engine rocks and makes a rocking noise AND the service traction control, traction control is off, stabilitrak needs serviced & engine light comes on/stays on. Not to mention, my cruise works on/off and my rear window wiper doesn't work anymore... :-((((

    Can somebody please let me know if you had these similar problems, what worked as far as repair...???
    Thanks!!
    C. Martin
    Quote Originally Posted by mjs84 View Post
    Driving to work this morning my 09 silverado 1500 stalled out twice. Both times the initial indication of "Stabiltrak disabled" came on, followed by "Service Stabilitrak" followed by "Service Traction Control" lastly followed by "Reduce Engine Power" and eventually the engine stalled out leaving me with only manual steering and brakes.

    Has anyone had this issue before? Truck only has 26,000 mi on it... still under warranty... but want to be as prepared for the dealer discussion as possible when I drop it off this evening (if I can make to the dealer).

    Thanks all.
    MJ

    Click image for larger version. 

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  9. #8

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    FINALLY FIXED, "SERVICE STABILITRAK & TRACTION CONTROL DIAGNOSTIC PROBLEM:
    "SERVICE STABILITRAK",
    "SERVICE TRACTION CONTROL",
    "HARD SHIFT 1-2 GEARS"-(STABILITRAK TURNING OFF-CLUNK NOISE)
    "STABILITRAK OFF",
    "TRACTION CONTROL OFF"
    ----------------------------------------------------------------------------------
    CAUSE:
    FUEL WAS 45% ETHANOL @ 85-(COSTCO GAS)-COMPUTER WENT INTO LIMP MODE CAUSING (AFM) TO GET STUCK AND NOT RESET COMPUTER.
    ----------------------------------------------------------------------------------
    SOLUTION:
    DRAINED & CLEANED GAS TANK-
    CHANGED FUEL FILTERS (*ONLY IF NEEDED)
    CLEANED INJECTORS-
    RESET COMPUTER-
    FILLED GAS TANK WITH NO ETHANOL- (Ethanol-free gas stations in the U.S. and Canada)
    TOTAL AMOUNT WITH TAX: $444.86
    ----------------------------------------------------------------------------------
    REFERENCES
    (STABILITRAK CLUNK NOISE): 2010 Silverado stabiliTrak question
    (AFM)-Definition: Active Fuel Management - Wikipedia, the free encyclopedia
    (ETHANOL): Common ethanol fuel mixtures - Wikipedia, the free encyclopedia
    (GAS STATIONS WITHOUT ETHANOL): Ethanol-free gas stations in the U.S. and Canada

  10. #9

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    My 2008 gmc sierra crew cab with 65200 miles, ran fine yesterday and today it hard started, hard shifted 1st and 2nd gear, check engine light came on, stabilitrak off, service stabilitrak light, traction control off light is on. The truck drove terrible, I read this tread looking for help. Lots of good advice. I went and checked my air intake tube and apparently when I changed a headlight last month I left the 2 clamps loose. I guess that compromised my air mixture causing a domino effect over time. I tighten both clamps then started the truck(no hard start), but still had check engine light but no other lights, so I disconnected the battery to clear the check engine light. Test drove the truck ran perfect so far.

  11. #10

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    Hi All,

    First time post on here.. I am having the same lights come on in my 08 Sierra SLT 4x4 as of last week. Thankfully I haven't gotten the "reduced engine power" yet. has anyone had any luck using the Service Bulletin 11273 on this year and model truck? I've been known to drive through a puddle or two but haven't in a long time. Any other ideas on how to fix would be appreciated. I don't believe it is a water issue and don't want to replace the throttle body unless I have to.

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