Running bad

Discussion in 'General Chevy & GM Tech Questions' started by Jack Wise, Mar 9, 2013.

  1. Jack Wise

    Jack Wise New Member

    I have a 2001 1500.It was running slugish then check engine light came on.Had it checked out and it was a bad thermostat.Had it replaced.It is still running slugish and when you are driving and you let off the gas slowly you will feel a thump.This happens at any speed.Has anyone had this problem?

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