2009 GMC Acadia SLT AWD

Asked by Amanda Aug 21, 2018 at 05:53 PM about the 2009 GMC Acadia SLT-1 AWD

Question type: Maintenance & Repair

Why would my vehicle be reading all 6 cylinders missfiring

5 Answers

50

It could be a bad intake gasket or depending on the car coil pack

10

I have the same problem i change the engine coils n work fine like the next 3 months n now 1 misfire n then i change the coil n next month another one n i can't fine what is causing the problem but pay for a better gas is a good start let me know how u fix u problem

1 people found this helpful.

I have been going back and forth with the dealership that I just bought a 2009 GMC Acadia from for 5 months now. Continuous misfires, replaced 4 coils, one of which was the same one twice. Then I had to replace the catalytic converter. Then a purge valve. And it's back in the shop again! They consulted GMC and said they now need to replace all of the coils and spark plugs and the engine control module. Luckily I got it put in my sell agreement to fix whatever the engine light issue was so I dont have to pay for all this because it's a few thousand dollars in repairs now.

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