2006 Cadillac CTS with P0303
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Cadillac CTS First Generation Forum - 2003 - 2007 Discussion, 2006 Cadillac CTS with P0303 in Cadillac CTS Coupe, Sport Sedan and Sport Wagon Forums; First time on this forum and need advise. My CTS just crossed 100,000 miles and whammo...car starts sputtering and engine ...
  1. #1
    bradlm5 is offline Cadillac Owners Member
    Automobile(s): 2006 Cadillac CTS
    Join Date
    Jun 2012
    Age
    54
    Posts
    1

    2006 Cadillac CTS with P0303

    First time on this forum and need advise. My CTS just crossed 100,000 miles and whammo...car starts sputtering and engine light comes one. I use a meter to get the P0303 error and probably need to replace all the spark plugs anyway, so that I will. Can someone confirm that if 1-3-5 are on the passenger side and 2-4-6 are on the driver side. Also, are 1 and 2 at the front of the engine or the rear??? Also again, how difficult is it to remove the upper intake to get to cylinder 3 spark plug??
    Thankx all!!!!!!


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  3. #2
    Kingoftypos is online now Cadillac Owners Master
    Automobile(s): 06 CTS Sport/Luxury package
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    Apr 2009
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    There is a how to in the DIY section that explains all this with pictures.

    KOT

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