Seasonal fuel blends
#1
Seasonal fuel blends
I have owned an 06 LT since April 09. Drove down to Treasure Island FL. and back with no problems. In Oct.09 I experienced my first engine light and it stayed on (with me resetting it, from misfire codes) a until spring 10. Then this past spring into summer, it was on maybe once or twice, and was off until my first fill up last week. I am back to resetting it again. So, dose anyone else have any problems like mine, do to Fuel blend changes, I are there any remedies or products that will help?
#3
Was wondering the same thing about octane, also if this all comes from the same station/brand. I never have problems like this but I'm also using 93 octane Sunoco, as my 2.4L runs best and gets better mileage on it.
#7
I had the same problem. Intermittant misfire codes. They seemed to come up less often on premium fuel, but eventually became a pretty constant.
There's a tech bulletin on it somewhere.
GM changed the design of the injectors b/c of this issue, and issued new ECU calibration files to go along with them.
If you want to fix it permanently, change out the injectors for the revised ones (watch out, they have a DIFFERENT PART NUMBER), and update the calibration files.
There's a tech bulletin on it somewhere.
GM changed the design of the injectors b/c of this issue, and issued new ECU calibration files to go along with them.
If you want to fix it permanently, change out the injectors for the revised ones (watch out, they have a DIFFERENT PART NUMBER), and update the calibration files.
#9
They actually change the fuel blend in certain portions of California from October through January each year. More oxygen additives to reduce air pollution, but it makes my mileage go down on all of my cars. I am glad when they switch back.
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