2008 Chevrolet Impala LS 3.5 V6 flex fuel
Check engine code: P0304
Please help my horror story. I purchased my Impala 2 years ago, love my car. However, there has been a shadow in the form of a check engine light that I have always had. I purchased the car, the check engine light came on: P0304, multiple maintenance trips and multiple fixes over these two years.
- changed spark plugs
- Replaced catalytic converter
- Switched to premium octane gas
- Purchased new gas cap
- Tried two different fuel injectors
No matter the attempt for resolution, It comes back with P0304. The car otherwise runs fine, but I’m tired of having the check engine light on, especially since it disables the automatic start feature on my key remote. Any ideas on where to go next?