calgator73

Don't trust the gauge... Use a scanner with live data to get an accurate read on remaining fuel. Also check this: https://gmauthority.com/blog/2025/06/gm-keeps-you-guessing-on-empty-unless-you-know-this-trick/

Took a little roadtrip from Nashville back into Virginia...

Any UCA issues?

While investigating possible causes for my suspension popping/clunking noises I came across something interesting. GM does not list a specific unique UCA or end link for the 2020 AT4. (see 85660607/85660606 for UCAs and 84367821 for end links for all sierra 4wd) GM does however list unique parts for the 2022. (see 85660608/85660609 for UCAs and 85590925 for end links) The end links for the 2024+ are about 2" longer. Knuckles are the same. Background my truck is an AT4 and I installed the AT4X GM Accessories suspension package. That package was limited to springs and shocks. Same ride height more wheel travel. My understanding was that the AT4/AT4X called for specific UCAs and end links to compensate for the 2 inch lift. What changes were made to the trucks to require new UCAs for trucks with 2" lift?

That sucks

Truly sad. There were some news reports years ago after the 1998 flood (if memory serves) that talks about areas out there being uninsurable due to the flood risk and how county officials would work through the state reps in congress to undo that. I truly hope these lessons are learned as numbers of deaths from these events now exceeds 1k. No excuse given the history of that river system.

https://www.aev-conversions.com/product/aev-35-tire-clearance-kit-gmc-sierra-1500-at4x-aev-edition/

Put the X suspension on the at4.

I purchased this: https://accessories.gmc.com/product/60-inch-blade-led-tailgate-light-bar-by-putco®-associated-accessories-19418352?bac=117063&body=Crew Cab Pickup&bodyId=22&bodyNumDoors=5&bodyNumDoorsId=5&drive=4WD&driveId=8&engine=6.2L V8 GAS&engineId=5920&make=GMC&makeId=48&model=Sierra 1500&modelId=548&trim=AT4&trimId=5102&wheel=Short Box&wheelId=651&year=2024 Just be careful where the control box is mounted and of course don't use the stickers. mount it to the bed with screws.

Good to know.

Looks like the 2025 GM trucks and SUVs equipped with the 6.2 can now get the cold air intake that they discontinued I think in 2021.

Sorry for the delayed response. For some reason I wasn't getting notifications. Yes as far as I know specifications regarding cargo capacity and tow rating will probably be much like the ZR2 or AT4X.

My 2014 Silverado 5.3, 2017 Malibu, 2019 Lacrosse and 2020 AT4 6.2 all did the same thing. My 2007 Lucerne had identical mileage in the winter as summer.

What I noticed when they first switched over to direct injection in 2014 was that if the vehicle is winter cold then they run a very rich mixture to get the catalytic converters to light off. I was always seeing around 10 to 12 mpg on my 15 minute commute. When I started parking in the garage which maintained around 60° then my MPGs were normal around 17 to 20 on the same commute. On the way home of course if it was still below about 40 gas mileage would still suck.

Always advocate dropping the pan to check for any foreign objects and to service the filter. If the fluid looks normal on the dipstick then simply dumping the pan is good enough.