In 2012 I took the car in for a oil change. I had noticed a smell of anti freeze coming from the vent when you turn on the heat. After the service I ask my mechanic if he smelled anything and he stated something smells sweet but did not say he smelled anti freeze. Over the past two year when I drive her car I turn the heat on and yes the smell of anti freeze is still there for about 10 mins. And goes away. Fwd: 2/2014 my wife called and said after turning the heat on she could not see out the front inside windshield and had to keep wiping it with a rag and the smell of anti freeze was very strong. I know about heater cores and it shouldn't be bad because my wife hates heat.

- Lake Elsinore, CA, USA

While driving, numerous dash lights came on. Vehicle began to buck and shake. As suddenly as it began it stopped. Several days passed until the condition occurred again. Took vehicle to dlr for service. Advise of no problems found; was told to take a picture when it recurred. As suggested I took pictures of the incident. Dlr advised he couldn't determine condition from picture. However, GM had released a tsb with infor that could resolve problem. That worked for several months. Had an independent repair facility check for the same problems; they replaced plugs and wires.that lasted 2 months. They replaced a module. That lasted for about 9 months now the problem comes and goes. No one can pinpoint the exact problem for the lights coming on.

- Apopka, FL, USA

After driving the stabliltrak comes on, traction comes on, powering engine down comes on. Vehicle loses power.

- Kansas City, MO, USA