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  1. #1
    Bald Tire
    Join Date
    May 2014
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    Florida
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    Tune up question.

    For those that have tuned up their H3s, did you also replace the coil packs? My 3 is gonna hit 100K shortly, just curious if you folks think it would be wise to replace the coil packs while I replace the plugs since you have to remove them both anyways?

    Thanks.

    2009 Hummer H3 Adventure Package:
    -Steelcraft Winch Brushguard/Warn VR10000 Winch
    -GM Rocker Panel and Under Carriage Protectors
    -Roc Doc U-Bolt Skidz/Purple Cranium Spider Diff. Rock Guard
    -Toyo Open Country M/T 315/75-16
    -Rough Country 2.5" Leveling Kit
    -Surco 40x50" Roof Basket w/ Hi-Lift Jack attachment
    -Sherpa Snorkel

  2. #2
    Bald Tire
    Join Date
    Nov 2014
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    United States
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    That would be costly. I would just clean and inspect each pack while changing plugs. Make sure the boots arnt getting to worn out and all.

    I had a pack go bad around 60k due to moisture from water leaking in through the plastic on the hood. I replaced plugs the one pack and just cleaned the rest. I also reapplied silicon to the boots and rubber seals on reassemble.

    Btw I knew a pack had gone bad because misfire and I was throwing a code.

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  4. #3
    El Diablo
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    I'd only replace a coil if it failed. I've done plugs a couple of times.

  5. #4
    Bald Tire
    Join Date
    May 2014
    Location
    Florida
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    No codes so far, perhaps just cleaning and plugs are in order. Cool, thanks.

    2009 Hummer H3 Adventure Package:
    -Steelcraft Winch Brushguard/Warn VR10000 Winch
    -GM Rocker Panel and Under Carriage Protectors
    -Roc Doc U-Bolt Skidz/Purple Cranium Spider Diff. Rock Guard
    -Toyo Open Country M/T 315/75-16
    -Rough Country 2.5" Leveling Kit
    -Surco 40x50" Roof Basket w/ Hi-Lift Jack attachment
    -Sherpa Snorkel


 

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