What did you do to your NNBS GMT900 Tahoe/Yukon Today?

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mikeyss

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I can vouch for this!!
X1,000,000,000!!

Same here. I grew up in Harrisburg and eventually I was an emission and state inspector. Stupid laws, but there were a few good ones though, like ball joint tests. But I hate PA for many more reasons than the inspections, lol. Moving to Colorado was one of the best things I've done.
 

Tonkatoy

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If I remember right, those are done with a 12 point socket. Take a picture and post it. I don't have a good shot, this is the best I have.
The ones on the back side of this pin, I’ll get a better pick tomorrow
View attachment 232517

CC1A16F4-F70F-481D-AC84-3A3EA9AEF851.jpeg
 

Tonyrodz

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Same here. I grew up in Harrisburg and eventually I was an emission and state inspector. Stupid laws, but there were a few good ones though, like ball joint tests. But I hate PA for many more reasons than the inspections, lol. Moving to Colorado was one of the best things I've done.
Yes, same here--many, many more reasons.
 

Kee Fuller

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The obd check for emissions includes that a certain number of and/or specific system monitors show a "ready" state. This includes catalytic efficiency, evap, etc... I bet @Rocket Man is right, and that Range device spoofs something for the AFM. When you remove it, that module shows "not ready". You need to drive it. You won't have any way to know the readiness state without a scanner, but usually 20-30 minutes or 40-50 miles will do it. Vary your driving and get her good and hot.

Quick google for basic info...
https://www.google.com/search?q=i/m+readiness&oq=i/m+&aqs=chrome.2.69i57j6j0l2j69i58.3397j0j7&client=ms-android-verizon&sourceid=chrome-mobile&ie=UTF-8

Had to do this with my explorer a few years ago
 

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