r/Silverado

plan on adding the afm disabler day after I trade in

Looking for opinions:
I found a Silverado I like, OTD is about 41k, truck is single owner, regular oil changes and has 66k miles on it. The dealership is a Chevy dealer offering lifetime powertrain warranty.

Does this seem like a good deal?

It’s not going to be a daily driver.

Hi Yall,

I’m looking for some advice and real-world experiences from other 2.7L/8L90 owners.

I have a 2026 Silverado 1500 2WD with the 2.7L TurboMax and 8L90 transmission. The truck does not have the Max Trailering Package.

Recently, I made a road trip from San Antonio, TX to Southern California. I make this trip about three times a year, usually with around 400 lbs of cargo in the bed, but I’m not towing.

On the hotter parts of the trip, the outside temperature was close to 100°F, and I was cruising around 70–80 mph. While climbing some of the long, gradual grades on I-10 through West Texas and the Southwest, I noticed the transmission temperature on the dash reached 214°F. The engine RPM stayed fairly steady between 1,500 and 2,000 RPM, and the transmission didn’t seem to be hunting between gears.

Once the outside temperature dropped to around 75°F later that evening, the transmission temperature came back down and stayed around 190°F during normal highway driving.

The truck never displayed a “Transmission Hot” warning or showed any signs of abnormal shifting.

My questions are:
Are these temperatures considered normal for this truck under these conditions?

Has anyone else with a 2025–2026 2.7L/8L90 seen similar temperatures on long highway grades?

For those who frequently drive through hot climates have you installed an auxiliary transmission cooler? If so, what kind of temperature reduction did you see?

Has anyone installed the PPE auxiliary transmission cooler on a 2026 2.7L? I’m interested in real-world results and whether you noticed any downsides.

From a longevity standpoint, would you be comfortable seeing occasional 210–214°F temperatures a few times a year, or would you recommend upgrading the cooling system to reduce long-term wear on the transmission fluid and transmission?

I’m planning to keep this truck for a long time, so I’m trying to be proactive rather than waiting for problems. I’d appreciate hearing from anyone with similar experience or anyone who has monitored transmission temperatures on long desert highway trips.

Thanks in advance!

As the title suggests my afm only really works half the time it supposed to the other half I have to throw on tow haul mode and im thinking it has to do with my rpm not sitting where its supposed to as of writing this im doing 50mph with cruise on and sitting under 1250 nearing a grand if anyone has an idea on why ill take it

Got a double cab custom as a staring off truck. Since I’ve been able to drive a rst at the moment. The difference is the, it’s a crew cab with the digital display and bigger touchscreen. It’s also 4wd while mines is 2wd. I didn’t even realize the different trims within a custom. By me not having all those bells and whistle. I’m not paying a lot of money for mines.

I don’t really need 4wd so that’s not a big deal to me. But now I’m starting to not like my custom as much. But very grateful to have a brand new truck though. My plan was when I got the truck to keep it a year or two then trade it. So until then what mods could I do or have you done if you have a custom. To make look more idk what the word, just not plain.

Purchasing a ‘26 1500 turbo max soon. Want to lift or level/ do the whole tire thing. New to the truck world and I’m a visual learner lol.

Need inspo. Share your truck and what you’ve done with it! SHOW ME YOUR TRUCK!! TYIA

I'm running 4 16awg wires from a head unit to a solid state relay switch and looking for a factory opening I can run them through. Anything on here I can use without drilling or removing too much of the dash?