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  1. #1

    Default hesitation at high speed

    my 07 burban has a hesitation problem it does it at 90 mph through 100 mph the dealer is no help.they can't road test at that speed.any ideas?no engine light or codes.runs good other wise

  2. #2

    Default

    Seems a little strange to only have that hesitation at those speeds. But could be a lot of things. Plugs, wires, bad gas, etc. How many miles do you have on it? Is it tuned? Any mods? When was the last time you did scheduled maintenance? Do you have access to a handheld scanner? Then you could see what's happening at that speeds, misfires on which cylinder for example.

    2009 GMC Sierra Denali AWD

  3. #3
    Legend

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    Default

    Speed limiter.....?
    Steven



    "The Sarge"
    1999 Chevy Suburban LT- K2500
    7.4 454 Vortec, 4WD
    305/70/16 on Eagle Alloy




  4. #4

    Default

    Quote Originally Posted by Springthing View Post
    Speed limiter.....?
    I agree I had an silverado with a programmer and around 90mph it would shake a little and sometimes the check engine would turn on. Then again I had 20' rims and 35" tires with 9" lift
    07 SILVERADO Ls
    K&N Intake
    Hypertech Max Energy
    6" PRO COMP LIFT
    PRO COMP 17" RIMS 33" goodyear shoes
    Pioneer Avic D3 nav/DVD
    Chrome running boards
    Chrome door handles
    Dual tv/dvd in headrest
    Flowmaster
    HID's (8000k)
    Rear view camera

  5. #5

    Default

    They shouldn't have a hesitation though. They either won't accelerate or just cut fuel once they hit the limiter, which is also normally about 98 or so.

    Assuming everything is OK, truck is stock, etc... maybe also see if there is a PCM update for your truck? Wouldn't be unusual for an early '07 to have a few bugs in the puter.

  6. #6

    Default

    only has 22000 miles no mods.tried gastreatment and octane boost.also tried premium fuel.no difference.i don't drive at that speed to often only when out of state.(no points)

  7. #7

    Default

    have appointment on tuesday i'll see if they an reset PCM shouldn't hurt.
    07 burban black on black

  8. #8
    Moderator

    dwill3015's Avatar
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    Default

    Good ol' speed limiter. Mine is set at 200MPH on my Silverado LOL
    Darcy
    Washington State
    2006 Silverado 2500HD LT3 4X4 CC SB Duramax LBZ
    Tuff Country 6" lift, 35" Toyo M/T's on 20" Ultra Peacemaker wheels, Quadzilla Stealth2 programmer, Diamond Eye 5" cat-back exhaust, factory Special order color Yellow.

  9. #9

    Default

    Quote Originally Posted by pacheco View Post
    i don't drive at that speed to often only when out of state.(no points)
    I believe most if not all states have reciprocity when it comes to points/tickets what ever relating to your drivers license, that has been around for a long time. Back in 1963 I was visiting family in Virginia, I decided to see about getting a VA license thought it may come in handy. I passed the test but was some surprised to see the same driver ID# on the new VA license that was on my New York license, back then I found out that 20 some odd states were linked I bet it is way higher now if not all.

    Phil
    Happy 2 Wheeler!

  10. #10

    Default

    took truck to dealer.i asked to receck again.they claim everythin is to spec.guess i'll have to take it to a real mechanic.

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