What is your question?
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What is your question?
The check engine light is on. onstar says its an emmissions issue. Vehicle hesitates when accelerating. Ive been told gas cap, but it looks good. Also been told Cat might be bad. Occasionally when it has the accelerating problem the AWD light comes on and ABS light as well. After filling tank vehicle will sometimes be very hard to start as well

1 Reply
YOU HAVE AN EVAP ISSUE. COVERED UNDER 7YR 70K MILE WARRANTY. IF OUT OF WARRANTY HAVE IT CK'D BY YOUR MECH