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  1. ATS General Discussion Forum
    2013 ATS 3.6 While accelerating normally there's a "shudder or stutter" between 30-40 mph consistently. If I'm accelerating hard it doesn't happen and if I release the gas and reapply it goes away. It only happens while driving "normally". Doesn't matter if the engine is cold or not. It only...
  2. ATS General Discussion Forum
    Back to Springfield Cadillac (Vermont)... they brought in a senior level, 30 year, General Motors, formally educated, deeply experienced technician to address the shudder problem. Super cool, smart guy. It was a real pleasure to meet him. He let me put him on video. Here are some video clips...
  3. ATS General Discussion Forum
    40,000 miles, factory bumper to bumper warranty still good! My car would overheat while parked and idling. I discovered the radiator fan would not come on. Radiator fluid was low. I pulled plugs and found it was running very rich. I took it to the dealer, and this is what they found...
  4. CT6-V Series Forum - 2019-2020
    I bought my CT6 new in 2017. I have 21,700 miles on the vehicle. Yesterday, was the 2nd time I had to take my car in for the transmission flush and Mobil One oil replacement. The service person acted surprised of my complaint around the transmission shudder. I told them this was a problem...
1-4 of 4 Results