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  1. #1
    Jr. Mechanic Jay's Avatar
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    Dec 2010
    Location
    Lakeville, Massachusetts, United States
    Posts
    80

    Default Check Engine light after Diablosport Predator on 03 5.3 Silverado

    Hello all:

    I have already sent 06monteSS a PM with this issue and a few other minor questions and I'm awaiting his response. However, I just wanted to throw this out there and see if anyone else had this issue and knew a remedy...

    I just installed the 87 Octane Tune into my 03 5.3 Silverado and noticed a great result in performance...after about 20 miles the engine light has popped on but without any decrease in performance...anyone else experience this?

    Some of you may remember this happened to me after the 57 Series intake installation but it went out on its own and has not returned until now.

    I am going to swing by my buddies garage and put it on the code reader if no other remedy is known....thanks for the help.

    JAY

    ---------- Post added at 08:31 PM ---------- Previous post was at 08:00 PM ----------

    OOOOKKKAAAAYYYY!! The D@*N thing went off again!! I just went down the street to grab a sandwich and when I got back in the truck it was gone! Oh well... the truck is F'ing with me...again! LOL! Hopefully it stays like this.
    Jay

    2003 Chevy Silverado Ext Cab Z71
    2" Rough Country Leveling Kit and Stabilizer
    285/65R18 BFG TA KO on Black Rhino Rockwell
    Magnaflow Cat Back
    K&N 57 Series Intake
    Diablosport Predator
    Nerf Bars, Tint, Soft Tonneau

  2. #2

    Default

    Sounds like you have something loose that is tripping the engine light. One possibility is that with installing the DSP, you have been "getting on" your truck a little more, causing more vibration/movement than normal, resulting in a sensor or something loosening up enough to trigger the CEL. IDK, just a guess .
    2003 Silverado 2500HD 6.0L Vortec V8
    2" Body Lift
    3" Suspension Lift
    Skyjacker Hydro 7000 Shocks
    Skyjacker Steering Stabilizer
    35" Tires with 20" American Racing Rims
    Velocity Cold Air Intake
    Billet Throttle Body Spacer
    BBK Performance Headers
    MBRP Cat-Back Exhaust System
    DiabloSport Predator- Soon to be tuned by Diablew

    "Soon to be leveling-kit"

  3. #3
    Jr. Mechanic Jay's Avatar
    Join Date
    Dec 2010
    Location
    Lakeville, Massachusetts, United States
    Posts
    80

    Default

    What?!? ME?? Get on my truck?!? Never!! HAHAAA!

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