Slight backfire on start?

[stevek]

Does anyone else with the 6.2 have a slight backfire after starting?

 

[ezdaar]

your startup enrichment tables are dumping excessive fuel...
or cam timing is off.

 

[stevek]

Plus I am having TERRIBLE mileage. Less than 10mpg keeping it under 2.5k rpms (3k on the highway)

 

[GM Customer Service]

Stevek,

I see that you’re experiencing multiple issues with your vehicle. I am very sorry to hear that. Did you speak with your dealership to confirm if there is a reason for the backfire plus bad gas mileage?

Thank you!

Elizabeth, GM Customer Service

 

[2005yukonxl]

what would a GM dealer know that cant be found on the internet? i swear they are getting dumber and dumber...the old answer of "talk to your dealer" used to be good when they had techs that could diagnose problems and fix them. now they only have robots who plug a computer in and read a code and throw whatever part at it they think will fix it and then throw another at it and then another at it and then say its normal.

 

[BabyHuey]

what would a GM dealer know that cant be found on the internet? i swear they are getting dumber and dumber...the old answer of "talk to your dealer" used to be good when they had techs that could diagnose problems and fix them. now they only have robots who plug a computer in and read a code and throw whatever part at it they think will fix it and then throw another at it and then another at it and then say its normal.

Unfortunately i have to agree with you

 

[stevek]

Stevek,

I see that you’re experiencing multiple issues with your vehicle. I am very sorry to hear that. Did you speak with your dealership to confirm if there is a reason for the backfire plus bad gas mileage?

Thank you!

Elizabeth, GM Customer Service

No, and I'm rather afraid to go there. For some stupid reason I actually went there with a problem before WITH A VIDEO OF THE PROBLEM and they gave me a "could not replicate" excuse on my receipt. Oh, I had to pay for them to tell me they couldn't replicate the problem.


The people in the service depot, they're stupid. I don't want to talk to a complete idiot trying to explain my problem. I want to talk to someone who actually will be WORKING on my car... someone who had to go to school to get their job. One service depot idiot told me I needed to get my carburetor cleaned... I DON'T HAVE A CARBURETOR.

 

[GM Customer Service]

Stevek,

I completely understand your concerns. I would like to look into this further for you. Could you please send me your VIN with your full contact information including your address?

Thank you

Elizabeth, GM Customer Service

 

[stevek]

Done