My 2007 pontiac g6 gt has a check engine light on for days now....


Asked by Aug 23, 2014 at 01:44 AM about the Pontiac G6

Question type: Maintenance & Repair

My g6 check engine came on a couple days
ago. They did. A diagnostics and said catalytic
converters p30 something like that. Well all of
a sudden today as i was driving it started
loosing power, all the dashboard lights
starting coming on and completely shut down
on me. I tried to crank it back up and it
wouldnt start. Guessing it was the battery but
it isnt nor the alternator. Has anybody else
experienced this, if so what is the solution

13 Answers


If the code was for catalyst failure then it is a good chance the catalyst melted down and totally plugged the exhaust system. If the engine can't breath it won't run. Take it to a shop you trust, if the cats did melt down there is another problem that caused it.


But why will the car turn on after charging battery then die


It can't breath, it will start very briefly the die due to exhaust pressure build up. If your battery is going dead just sitting like overnight you have additional trouble.


But what could be draining the battery? Bc once we charged it thecar will turn on perfectly fine then it will die on us bc battery dies all over again

1 of 1 people found this helpful.

OK now I'm getting the story, try this: put a volt meter on your freshly charged battery, it should read around 12.7 to 13.2 volts, if not replace battery, if so then start engine, you should now get a voltage of 14.2 to 14.7 volts, if not check charging system wiring for broken circuits, if wiring checks good then you either have a failed alternator or the ECM is not regulating the alternator. Yes the alternator is computer controlled.

1 of 1 people found this helpful.

So to explain the battery drain down, your car is only running on the battery, that is why it quits running. If you continue to drive it like that it will eventually start ruining other electrical components due to low voltage.


Ok sounds about right. Apparently i took the battery to get charged and came out to it being a bad battrery so i just purchased a new one. Ill just take it to get the catalytic converters fixed bc i did smell a little bit burnt of the front cc


So i just put a new battery in and drove it around for an hour or so and the car has not turned off? Whyy? Its running perfectly fine


Did you check the voltage with the engine running?

1 of 1 people found this helpful.

Yes seems to be right. Right now the engine light hasnt turned on when it was on for 3 days


Could it just been the battery ?


Could have been your dying problem, might keep a eye on the voltage for a few days. I have never heard of a battery setting a catalyst code though.

mine is hesitating when I press on the gas. I went to the dealer and it was the catalytic converter. They also said to turn off the engine light they needed to change out an actuator and that would cost $300.00

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