[272906]

Hi,

My diesel colorado is throwing check engine light about every 3/4 of a tank. Took it to a couple dealers and they said it's due to winter diesel and the computer program is not calibrate correctly and therefore keep throwing the code. I'm wondering if any of you have the same problem. Thanks.

 

[dmaxjr]

Take it to another dealer.>
Lots of us are running winter fuel for 2 months now. Never seen a check engine light at all. Test your fuel, you may have gotten a bad batch.

 

[Manny]

Hi,

My diesel colorado is throwing check engine light about every 3/4 of a tank. Took it to a couple dealers and they said it's due to winter diesel and the computer program is not calibrate correctly and therefore keep throwing the code. I'm wondering if any of you have the same problem. Thanks.

Whats the code? If they didn't tell you OnStar can at the push of a button. But they might be on to something, P2A00 is what I'm dealing with, Dealer replaced, NOX sensor 1 (right pass the turbo). I reset it using my own code reader and then it came back after 100 miles. Took it to the dealer again and they said GM has come out with a tech bulletin on 12/12/16, but no resolution

 

[lusid]

MN here - been running winter blends since November. No codes on my truck

 

[crappie man]

none on mine and I run at least 25 gallons a week through my truck

 

[k7tnt]

Winter blends with Howes, also here since November. No codes or any problems.

 

[272906]

Hi,

My diesel colorado is throwing check engine light about every 3/4 of a tank. Took it to a couple dealers and they said it's due to winter diesel and the computer program is not calibrate correctly and therefore keep throwing the code. I'm wondering if any of you have the same problem. Thanks.

Whats the code? If they didn't tell you OnStar can at the push of a button. But they might be on to something, P2A00 is what I'm dealing with, Dealer replaced, NOX sensor 1 (right pass the turbo). I reset it using my own code reader and then it came back after 100 miles. Took it to the dealer again and they said GM has come out with a tech bulletin on 12/12/16, but no resolution

That is the code. P2A00. Which state are you in?

 

[lusid]

http://coloradofans.com/forums/226-...ms/226-diesel/328146-p2a00-nox-sensor-code-gm-issues-tech-bulletin-pip5449.html

 

[Manny]

Good Ol' Southern California.

That is the code. P2A00. Which state are you in?