Question on automobile service ?

[hillbilly]

I just got my 2000 chevy impala back from the dealer. They were to do a tune up on the car and they did. Now th check engine light is on and it is hesitating bad. I will take it back to the dealer tomorrow, but what could be the cause of the hesitating while idling ?

[Hawk]

A bad sensor or a miss gapped sparkplug. A loose spark plug wire etc, Tell them to scan it for a code. they can go from there. Do not pay them any money. Some businesses will take advantage of small problems just so you will take it back.

[drtried]

They probably didn't hook a sensor back up. Or perhaps a sparkplug is cracked or a plug wire is not connecting good. Could really be many things, but those two I would put at the top of the list.