Recent content by ssalvat

As it turns out I had to take action on this sooner than I would have liked as the wife is suddenly itching for an emergency road trip using this car to tow a pop up camper. I really didn't want to pay $200 to a GM dealer so I ended up calling a local shop, Jim's Independent GM Repair in...

Thanks for the link, this is pretty much exactly what I think is happening. Using a cheap scan tool I've measured ethanol content around 50% (I've owned the car for almost a year and put nothing but regular unleaded in it, so no way it should be over 15%) and long term fuel trims around -20...

That would be fantastic, thank you! I'll send you a PM to figure out the details. I know even less than you do about the Tech2, so if anyone happens to read this and have some advice it would be most welcome.

Hi All, Apologies if I'm posting in the wrong place or this is considered a breach of etiquette, but by any chance does anyone live in the Denver area and have a scan tool they would consider letting me use? I have a 2006 GMC Yukon XL that is throwing p0172 and p0175 codes, from my research it...

Well, I had some time this morning to test out a couple of the scan tools I mentioned and I thought I'd share the results. I think I found a PID that works for Ethanol % for my Yukon (PID = 2212F3, Equation = A/2.55, Header = Auto or 6C10F1 (got the same results with both), everything else...

I posted this on another thread, but since this one is pretty well known at this point I thought I'd share here too. I think I found the right PID to read ethanol % in my 2006 Yukon XL. Credit to aaronc7 over here...

I'm pretty sure I still have a Windows XP disc floating around too :)

Interesting...what's the difference between that one on AliExpress and TollKeeper's link on Amazon? Seems like ordering from Amazon for $100 less would be a no brainer unless I'm missing something. Is the Ali version a standalone unit while the Amazon version requires a laptop?

Whoa, TollKeeper, I didn't know that existed for GM but that would be perfect! I actually did something similar for a Toyota and it worked fine. I definitely have a laptop floating around that I could use, assuming it just needs to be Windows 10. If I could get one of these for $100 and it'll...

Hi All, I recently bought a 2006 GMC Yukon XL. Pretty much as soon as I got it home it started throwing p0172 and p0175 codes, which I've learned (for a flex fuel vehicle) can often mean the ethanol reading is off. So, at the very least, I'm looking for something that will read the ethanol %...

Hopefully this thread is just taking a break and not abandoned :smile: I'm trying to read ethanol % on a 2006 GMC Yukon XL. I have the p0172 and p0175 error codes, I'm hoping it's just the ethanol % needs to be reset, but I'd prefer to know for sure before taking it to a dealer to find out...