• The engine light means that there is a trouble code. That means the car's computer has found a problem somewhere. The only way to find out what the problem is is with a code reader. Shops have these. Where did you have a tune up? The trac off light may be related to the engine light. If there's a problem with the drivetrain that affects the traction control system then it will disengage. Sounds to me like you need to take your car into a pontiac dealer or another shop. The engine light means 'get this looked at soon', not 'keep driving normally and then complain on AB'. Advice for the future. Hope this helps, Good luck

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