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 ...
- 02-21-13 02:59 PM #1Cadillac Owners Member
- Automobile(s): 2006 Cadillac CTS
- Join Date
- Jun 2012
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??
- 02-21-13 05:06 PM #2Cadillac Owners Master
- Automobile(s): 06 CTS Sport/Luxury package
- Join Date
- Apr 2009
- Ledyard, CT
There is a how to in the DIY section that explains all this with pictures.
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