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  1. CTS First Generation Forum - 2003-2007
    Had a 2003 cts start to go rough idle, it’s perfectly fine when running but starts to kinda kick back when slowing down. Don’t have a scanner either but used a friends to see and it was the 4th cylinder. I was wondering if anyone might’ve run into this too. Also sorry just wondering if there’s a...
  2. Escalade and ESV Forum - 2015-2020
    My 2020 Escalade has had a rough idle for 12k miles. I took it to two dealers - both say is is normal. I have a 2007 navigator with a noisy lifter that idles smoother! This is not normal. What can I do?
  3. SRX 1st Generation Forum - 2004-2009
    Engine stopped working while driving, Missfire on 1,3,4,6 cylinder. spark plugs and ignition coils weren’t the problem, catalytic converters just changed 3,000 miles ago. 89 e is the gas used and i go to a place that test the ethanol in gas. Fuel isn’t the problem. It seemed to be getting worse...
  4. Escalade, EXT and ESV Forum - 2007-2014
    I am having an issue with my 2012 escalade ESV. P304 flashing check engine, stabilitrak traction control off, runs really rough when light is flashing, clear codes and it starts running fine again. I am now hearing a tick at idle and lower rpms. Shop found a loose or coroded wire on the coil...
  5. 2008-2013 CTS General Discussion
    Hi All I have a 2012 CTS4 3.6L coupe, 115K, bought new, that idles rough at stop lights. It doesn't stall, but almost wants to. As soon as I hit the accelerator, she's fine. Any suggestions would be great! Also, what is the required GAP? Thanks!
  6. 2008-2013 CTS General Discussion
    (Skip to Double Space for facts & data, actual questions are at the bottom) Hello all, I’m a young technician about 6 months into my own shop business and have been ALL over these forums the past week, as I have a customer with a 2008 CTS who was having major performance problems. Cyl. 2, 4, and...
  7. ATS General Discussion Forum
    Aw man... Starts kinda rough in the morning, then I shift it to Drive, earthquake. But when I let go of the brakes, all smooth. Every red light I see coming I start to brace. When I press in my E Brake and put it on drive, all smooth but as soon as I press the brakes the Shakes starts. What's...
  8. Seville and Eldorado Forum
    Okay so I bought my first car in November for my 23 bday. It’s a 97 Cadillac Seville sts northstar. It had 149000 miles when I got it now at 154000. I didn’t know a thing about cars when I bought it. I have spent hours reading the posts on here about the Seville and the northstar and have...
  9. ATS General Discussion Forum
    So my problem is that one day while driving, I came to a stop light and my car was idling very rough. Few days go by, Idle is still rough, my stabilitrak light comes on and now my transmission downshifts very rough. Any ideas on what the problem is?
  10. Northstar Engines and System Technical Discussion
    Hello all, not sure if I’m posting this is the right area or not but I’m having some trouble with a (1993 Cadillac Northstar front wheel drive (4.6L 32V V8) I have no prior information regarding the car or what was replaced & checked. The car when it’s a cold Start or first start of the day...
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