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2012 Terrain V6 engine or transmissions problems

64K views 77 replies 17 participants last post by  Jmtech22 
#1 ·
Hey all. I purchased a used 2012 V6 Terrain with 33,000 miles on it back in October. I have had it back to the GM dealer that sold it to me twice for what I describe a miss or maybe a Torque converter problem. When the vehicle reaches around 35-45 mph i get a shuttering affect like its either missing or the converter isn't locking up. Not sure what it is. Anyone else have this problem or maybe some suggerstions? The dealership replaced the coil and plug on the number 6 cylinder and they said it was fine but its not. Looking for answers or suggestions. Thanks
 
#77 ·
I know what you mean, ours had the SES blink when new and several times after but havent had any lately, the dealer could never find anything. I just want to figure this out! It's like the mystery misfire!
 
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