redwngr

The lights might all be related to a sensor or connection serving the ESC. Might not take long to check/swap.

Take it in and see if they can find the computer has stored the cause of the CEL.

6.6L gas does not require premium fuel.

They are approving use of up to B20 now. They are still warning against having B20 in it it storing for a longer period. They are also concerned and recommend against using B20 if expected temperatures are below 32*F.

Sorry to hear that medical issues have forced a vehicle change. Looks like you and the 'vette were having fun on the Dragon.

Dexos2 is a diesel spec oil, not a 'new' gas engine oil. List of oils approved to Dexos1 Gen2, (latest Dexos1 version), Dexos2 ( a diesel spec for some diesels) and DexosD (used for the 3.0L diesel) https://www.gmdexos.com/brands/dexos1/index.html

LTZ is available in multiple configurations. For 2021, all are crew cab, but also need to define 2wd/4wd, which engine, and short/standard box.

You won't like the sound of the 3.0L compared to the C6. Turbo I6 doesn't rumble like a V8 .2 Imho, the 3.0L would be fine for the job described.

In 2020, AT4 was available in crewcab shortbox or doublecab standard box In 2021 AT4 only available as crewcab short or standard (no doublecab)

Maybe?? This is for 2021's. As others posted, 2021's will already have the newer fluid. https://gm-techlink.com/?p=14564 Twisted Transmission Cooler Line March 30, 2021 A harsh shift, shudder, surge or stall condition may be present on some 2021 Silverado, Tahoe, Suburban, Sierra, Yukon, and Escalade models equipped with the 6L80 or 6L90 6-speed automatic transmission (RPOs MYC, MYD), 8L90 8-speed automatic transmission (RPO MQE), or 10L80 or 10L1000 10-speed automatic transmission (RPOs MQC, MQB, MGM, MGU) and with low mileage. These conditions may be caused by a twisted transmission cooler line. (Fig. 11) Fig. 11 When checking for a twisted cooler line, it may be necessary to remove the underbody panels in order to clearly see all the lines. If a twisted cooler line is found, disconnect the cooler line from the transmission auxiliary cooler and untwist it. Reconnect the cooler line if the rubber is not deformed or misshapen or there are not any other issues with the line. If the cooler line is damaged or deformed from being twisted, it should be replaced. Check the transmission fluid level following the procedures in the appropriate Service Information and add fluid if needed.

I wonder what option forces them to be stored at the airport? They build a lot more than a truckload every few hours.

Have you had it looked at? iirc, there was at least one item published regarding a problem that resulted in performance issues. Of course it's hard to make comparisons over the internet, but I'm not finding this one to be doggy or underpowered when making a throttle heavy maneuver. Like

I deleted all the stuff you didn't understand.

For posters that can't read. Missed the part about any tire shop??

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Did you try adjusting the hood switch?

https://www.chevrolet.com/owners/warranty Powertrain warranty is different for the 3.0L or 6.6L Duramax. Other warranty sections don't change, but imho extended warranty isn't purchased because of worry about spending a few hundred on a door switch (or similar) for a $50,000 vehicle. It's likely purchase because of worry about a severe powertrain failure. Side note: From website: For most new 2019-2020 Chevrolet vehicles, coverage is for the first 5 years or 60,000 miles, whichever comes first, see dealer for details. The 2020 1500 Series Light Duty (LD) pickups equipped with a 3.0L Duramax Turbo-Diesel Engine and 2500 and 3500 Series Heavy Duty (HD) pickups equipped with a Duramax® 6.6L Turbo-Diesel V8 engine are covered for 5 years or 100,000 miles, whichever comes first, see dealer for details. I'm NOT a fan of extended warranties, but if looking at them, be sure to read the details of what is already included and what will be gained before making a decision. Lots of 'warranty plans' out there. What is true about one may not be true about another. The sellers are not likely going to point out the issues in the fine print. On average, the sellers make more money if you buy an extended warranty. (or they wouldn't be doing it....) This means that on average, the buyers are losing money on extended warranty. Fee pays the cost of repairs --but it also pays the profit/return on investment to the guy that gets you to sign, the guy that financially backs the plan etc etc. Been buying (mostly new, mostly GM) vehicles since late '70's. Some traded before standard warranty expired, most kept much longer. I've still not had a failure that would have been covered by an extended warranty. And don't forget about the extended plans on appliances, electronics, furniture, phones, tools etc etc. Save that money too, and put it in the same 'if something ever needs a repair that might have been covered by extended warranty' pot. You'll have a nicer retirement.

Seems to be a common voltage observation on brand new ones. The last few new GM's around here have done that initially, and once they got some time/miles on them the high reading was much less common. The explanation of all the things the computer considers when commanding the charging system is multi-pages long.

GM accessories has exhaust tips available. Selection seems to depend on which engine

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On 2021 1500 LT IOR Audio system, Chevrolet Infotainment 3 system, 8" diagonal color touchscreen, AM/FM stereo. Additional features for compatible phones include: Bluetooth audio streaming for 2 active devices, voice command pass-through to phone, wired Apple CarPlay and Android Auto capable. on 1LT optional IOS available, but wasn't available on 2FL IOS Audio system, Chevrolet Infotainment 3 Plus system, 8" diagonal HD color touchscreen, AM/FM stereo, Bluetooth audio streaming for 2 active devices, wireless Apple CarPlay and Android Auto capable, voice recognition, in-vehicle apps, cloud connected personalization for select infotainment and vehicle settings. Subscription required for enhanced and connected services after trial period. 1 - Included and only available with (PCM) Convenience Package II. Factory nav was optional on LTZ and std on HC IOT Audio system, Chevrolet Infotainment 3 Premium system with connected Navigation, 8" diagonal HD color touchscreen, AM/FM stereo, Bluetooth audio streaming for 2 active devices, wireless Apple CarPlay and Android Auto capable, enhanced voice recognition, additional memory for in-vehicle apps, cloud connected personalization for select infotainment and vehicle settings. Subscription required for enhanced and connected services after trial period. 1 - Included and only available with (PCN) LTZ Convenience Package II. IIRC, White can will fix you up with an IOT radio programmed so it will work in your truck https://www.whiteautoandmedia.com/

Transparent trailer uses an extra camera on the tailgate so should work with cap. Truck would have one camera for hitch view and one for trailer view. If CHMSL has 2 cameras - it will be one for the 'rear view mirror' camera and one as a cargo camera that looks into the bed. Neither would work with a cap covering the cameras (but the cargo view would be neat if it could be relocating to inside the cap) Available on 20212500 LT: ZL6 Advanced Trailering Package, includes (PZ8) Hitch Guidance with Hitch View, (U1D) Advanced Trailering System, (IOS) Chevrolet Infotainment System with 8" diagonal color touch-screen with (MCR) USB ports, SiriusXM with 360L, (U2L) HD radio and (UVB) HD Rear Vision Camera 1 - Not available with (PCL) Convenience Package, (DRC) Partial video display rearview mirror, (UVO) Bed View Camera or (ZW9) pickup bed delete. U1D Advanced Trailering System, includes checklist, trailer maintenance reminders, trailer security alerts, trailer mileage, tow/haul reminder, trailer electrical diagnostics and Trailer Tire Pressure Monitor System module 1 - Included and only available with (PCM) Convenience Package II or (ZL6) Advanced Trailering Package. CTT Hitch Guidance, dynamic single line to aid in trailer alignment for hitching (this one is standard on all trims) PZ8 Hitch Guidance with Hitch View 1 - Included and only available with (PCM) Convenience Package II or (ZL6) Advanced Trailering Package. PTT Trailer Tire Pressure Monitor Sensors, includes set of 4 sensors. Sensor functionality requires (U1D) In-vehicle Trailering App to be ordered with the vehicle and installed by the factory. Sensors will be shipped loose with the truck and will need to be installed on trailer by customer. System is capable of monitoring up to 6 wheels. Additional or replacement sensors are available through GM Accessories 1 - Requires (PCM) Convenience Package II or (ZL6) Advanced Trailering Package. For LT, the PCM package that some of those require: PCM Convenience Package II, includes (KI4) 120-volt power outlet, (KC9) 120-volt bed-mounted power outlet, (IOS) Chevrolet Infotainment System with 8" diagonal color touch-screen with (MCR) USB ports, SiriusXM with 360L, (U2L) HD radio, (UVB) HD Rear Vision Camera, (PZ8) Hitch Guidance with Hitch View and (U1D) Advanced Trailering System; Crew Cab and Double Cab models include (A48) rear sliding power window and (UG1) Universal Home Remote 1 - Requires (PCL) Convenience Package and (QT6) Power up/down tailgate. Crew Cab models include (R7O) Cloth Rear Seat with Storage Package. Not available with (ZL6) Advanced Trailering Package, (UVO) Bed View Camera, (DRC) Partial video display rearview mirror or (ZW9) pickup bed delete. Crew Cab models not available with (ANQ) Alaskan Snow Plow Special Edition or (BG9) rubberized-vinyl flooring. When ordered with (UVN) Bed View Camera, (UVB) HD Rear Vision Camera will be removed. And since PCM added to LT requires PCL.... PCL Convenience Package, includes (CJ2) dual-zone automatic climate control, (A2X) 10-way power driver seat including power lumbar, (KA1) heated driver and passenger seats, (KI3) heated steering wheel, (N37) manual tilt/telescoping steering column, (C49) rear-window defogger, (AVJ) Keyless Open and Start, (NP5) leather-wrapped steering wheel, (N06) steering column lock, (BTV) Remote Start, (UTJ) content theft alarm, (UF2) bed LED cargo area lighting, (T3U) LED fog lamps and (B1J) rear wheelhouse liners; Crew Cab and Double Cab models include (AZ3) front 40/20/40 split-bench with under-seat storage, (KPA) auxiliary power outlet and (USS) 2 charge-only USB ports for second row 1 - Not available with (B59) Remote Start Package. When ordered with (ZW9) pickup bed delete, (B1J) wheelhouse liners and (UF2) LED cargo area lighting are deleted.

I don't think the factory auxiliary battery for the 2500 gas includes an isolation system. afaik they are wired up same as on duramax, so they operate same as one big battery and the option requires either the larger alternator of the dual alternators standard setup on LT8 (gasser) Battery, heavy-duty 720 cold-cranking amps/80 Amp-hr, maintenance-free with rundown protection and retained accessory power 1 - Included and only available with (L8T) 6.6L V8 gas engine. Dmax set-up Battery, heavy-duty dual 730 cold-cranking amps/70 Amp-hr, maintenance-free with rundown protection and retained accessory power 1 - Included and only available with (L5P) Duramax 6.6L Turbo-Diesel V8 engine. Extra battery setup for gasser K4B Battery, auxiliary, 730 cold-cranking amps/70 Amp-hr 1 - Requires (L8T) 6.6L V8 gas engine and either (KW5) 220-amp alternator or (KHF) dual alternators. Not available with (KW7) 170-amp alternator. The snowplow package and dmax both include the bigger alternator -- but it can be ordered without snowplow prep KW5 Alternator, 220 amps 1 - Included with (L5P) Duramax 6.6L Turbo-Diesel V8 engine or (VYU) Snow Plow Prep/Camper Package. Free flow on (L8T) 6.6L V8 gas engine.