67Mustang

Was it not able to be rebuilt? I had the rear rebuilt my '08 Avalanche Z71 at around 155K. It cost me just under $1500.

Thank you. I didn't know the '11 6.2L was not AFM. That is some real good info and almost justifies the cost to feed it Premium gas. But what I was really concerned with is the AWD driveline as compared to traditional 4WD. I rarely use 4WD besides the occasional ski trip and turning it on occasionally on a wet road to move the gears and fluid around.

I'm shopping for used truck (Crew Cab 4WD). There's a 2011 Denali near me with just over 100k miles. I believe it has AWD instead of the traditional 4WD driveline. I am not looking for hard core off-roading abilities. Buying a 10 year old truck with 100K+ miles I am more concerned with reliability and maintenance. How are these old trucks with AWD holding up over the long term?

All I'm expecting from the G80 is little better traction in mud or snow. I'm not looking for any serious off-roading. As far as gear ratios, shopping the used market in my price range, I can't really get too picky. But good info to know if it sways me to one truck or another.

Are there any '07+ trucks with AFM with 300K+ miles?

I was just checking if those controllers would indicate the truck has a rear locker. I can usually see that in the ad pics. I'd rather not give my contact info to dealers/sellers asking for RPO codes unless I'm seriously interested in the truck.

Can anyone else confirm that all 2014+ trucks come with G80?

I'm looking at ads and the descriptions are not always clear. Do these controls (in red square) indicate that the truck has the Trailering Package and as such has the (G80) locking rear differential?

Hello GM-Trucks, I'm looking for opinions on the Fabtech 6" lift as well. I'm looking at used trucks and one that I am interested in already has the Gen II Basic already installed. It also currently has 35" tires which I'd run until they get worn then probably go down to 33". I've looked at pics online and 6" lift with 33" tires looks pretty good. Any input is appreciated. Thanks

You must have a heavy foot. LOL These numbers almost make the 35"s look tempting. Being in CA I'd probably keep it all stock engine and tune wise, cat-back would be OK. Maybe I'll consider 35"s on 17" 18" wheels if the price is right. Thanks for the feedback everyone

Hello GM-Trucks, I'm looking for a used 2014+ 5.3, 4WD, Crew, Short-bed. Some lifted trucks pop up in my search. I'd take a 3.5" lift with 33" tires without question but I'm seeing a few on 35" tires. They look great but I'm concerned with MPG as this will be my Daily Driver with mostly in town diving. What kind of MPG can be expected from a 5.3L 4WD Crew lifted enough to accommodate 35"s? Most have 20" wheels. As side note there's also a beautiful LTZ with 6.2L 9" lift on 37"s listed. I didn't even bother to inquire about it but I can't stop looking at it.

Thank you for the reply and the related link CamGTP. I figured it was not likely a widespread issue but figured I'd ask just in case. The search continues.

I previously had a 2008 Avalanche with the 5.3 Vortec engine. I was aware of AFM issues but it seemed like all trucks have some issue to be concerned with. The valve cover was replaced by the PO. Still the #7 plug would get fouled and I'd change it out. I was aware but kept an eye on it and was not too concerned. I had 160K miles on it when I go rear-ended and insurance wrote it off as a total loss. So now I'm shopping for a used 2014+ Silverado (4WD, Crew, shortbed, V8). Seems like I get something under 100K miles with my budget. Is problematic Carbon Build-up on the valves very common? Should I avoid this engine and shop for another brand? Relates Article: https://chevytrucks.org/chevy-ecotec3-5-3l-engine-problems/