redwngr

I'd have bought mine with 18's if they were available on Denali for 2021. I prefer the extra sidewall for ride. Tire diameters are similar. I do have a set of 18" take-offs that I have 3PMSF winter tires installed on. I don't tow travel trailer, but haven't had sway issue when towing with either tire set-up.

And fwiw, like every other other navigation database, there are places where the speed limit signs are different than the info the truck displays from the database.

Doesn't have much description, but this is what the order guide says for the 7 speaker bose: UQA Bose Sound System, premium 7-speaker system with Richbass woofer Might be more info on the Chev and GMC websites??

Owners manual lists a bunch of the reasons: Auto Stops may not occur and/or Auto Starts may occur because: . The climate control settings require the engine to be running to cool or heat the vehicle interior. . The vehicle battery charge is low. . The vehicle battery has recently been disconnected. . Minimum vehicle speed has not been reached since the last Auto Stop. . The accelerator pedal is pressed. . The engine or transmission is not at the required operating temperature. . The outside temperature is not in the required operating range. . The vehicle is in any gear other than D (Drive). . Tow/Haul Mode or other driver modes have been selected. . The vehicle is on a steep hill or grade. . The driver door has been opened or the driver seat belt has been unbuckled. . The hood has been opened. . The Auto Stop has reached the maximum allowed time. The automatic engine Stop/Start feature can be disabled and enabled by pressing [stop/start] switch. Auto Stop/Start is enabled each time you start the vehicle. When the switch indicator is illuminated, the system is enabled.

Seems the feature is a Denali Ultimate and AT4X thing only. (I copied previous post info from a sierra manual) 2022 refresh and 2023 order guides shows a 7 speaker bose package and a 12 speaker bose package. UQS Bose Premium Series with 12-speaker system with CenterPoint, Richbass woofer and AudioPilot Standard and only available on AT4X and Denali Ultimate trim levels (and not on AT4 or Denali trim levels) On silverado the UQS 12 speaker Bose option doesn't show as available (does show the 7 speaker) UQA - 7 speaker bose is standard on HC

For 2022 refreshed, NHT with 6.2 changes max trailer rating from 8,900 to 13,000 - Requires 4WD model, (NHT) Max Trailering Package and 20" wheels and tires. With 17" or 18" wheels max trailering is 11,700 lbs. Payload only goes up 160 lbs. For 2023 1500, those ratings aren't yet published in the order guide (waiting for release of LZO 3.0 specs??)

I would think this is correct. They would likely want to track the history it in the warranty system, so dealer wouldn't matter.

Supposed to be in audio settings on the refreshed trucks: Audio Settings From the AM or FM screen, touch '[music note icon]' and the following may display: Equalizer : Touch to adjust Bass, Midrange, or Treble using the options on the infotainment display. Fade/Balance : Touch to adjust by using the controls on the infotainment display or by tapping/dragging the crosshair. Sound Mode : If equipped, touch to display the following: ‐ Normal: Adjusts the audio to provide the best sound for all seating positions. ‐ Driver: Adjusts the audio to provide the best sound for the driver. ‐ Centerpoint: This setting creates a surround sound from nearly any audio source. ‐ Rear: Adjusts the audio to provide the best sound for the rear seat passengers. Bose AudioPilot : This feature adjusts the volume based on the noise in the vehicle and the speed. Touch Off or On.

2021 Order guide R3O Tires, LT275/65R18C blackwall Goodyear Wrangler DuraTrac MT 1 - Included with (RFV) AT4 Value Package, (PDG) AT4 Premium Package and (PCJ) Off-Road Performance Package. Available on AT4 only Afaik, this is the only C rated Duratrac, and the only Duratrac without the 3PMSF. For 2022 LTD they are available as an option for Pro trim standard on AT4 For 2022 refresh and 2023 they are available on Pro trim and standard for both AT4 and AT4X

On SLT for 2021, the dual outlets are on SLT if it has 6.2 or if it has X31 Presumably it was similar for 2020 NB5 Exhaust, single outlet S S S S S -- -- N10 Exhaust, dual with premium tips -- A1 -- A1 A2 S3 S SLE and #SB ELlevation -- Included and only available with (X31) X31 Off-Road Package. SLT - Included and only available with (L87) 6.2L EcoTec3 V8 engine or (X31) X31 Off-Road Package. AT4 - With (PCP) AT4 CarbonPro Edition the exhaust tips will be black. -- A1 -- A1 A2 S3 S Denali - dual outlets are standard.

Wheel to wheel running boards.

Grab a new filter. Pull the old one and check it. Probably install the new one.

In 'Personalization settings': Rain Sense Wipers This setting automatically turns on the wipers when moisture is detected and the wiper switch is in intermittent mode. Touch Disabled or Enabled. It is standard on 'refreshed' 2022 and 2023 1500's SLT, AT4, AT4X, Denali, Denali Ultimate ZR2, LTZ, HC Unavailable on other trims.

Yes, we understood that. Point is the dual outlet's are not dual from front to back.

Vandalism to vehicle fluids has always been a possibility -- not just to def. If it was vandalism your comprehensive insurance should over it. Any change it got some diesel in it? I was a fan of the DEF fill being under the hood -- to keep them separate. Of course lots and lots of posters wanted GM to do like the 'other guys'....and they got their way... The other thing that could happen is def in the fuel tank. Fwiw, if DEF is ever put in the diesel tank -- do not even turn the key on, as the in tank fuel pump will force def thru the fuel system.... https://gm-techlink.com/?p=16581 Diesel Exhaust Fluid Contamination in the Fuel System July 29, 2022 Poor diesel engine performance conditions, such as hard starts, rough running or hesitations and low fuel pressure, may be the result of fuel system contamination. The most common sources of contamination are other automotive fluids, including gasoline, engine coolant and engine oil. In diesel engines, one other culprit of fuel system contamination is Diesel Exhaust Fluid (DEF), which may be mistakenly added to the fuel system by owners. (Fig. 1) Fig. 1 These fuel system contamination issues may be found on many GM vehicles equipped with diesel engines (RPOs LM2, LUZ, LH7, LGH, LWN, LML, L5P, L5D), including 2010-2022 Express, Savana; 2011-2022 Silverado; Sierra; 2014-2019 Cruze; 2016-2022 Colorado, Canyon; 2018-2019 Equinox, Terrain; 2019-2022 Silverado 2500HD/3500HD, Silverado 4500HD; Sierra 2500HD/3500HD; and 2020-2022 Tahoe, Suburban, Yukon and Escalade models. Fuel system contamination can affect the performance of the fuel pump module, especially the spring and strut components, fuel level sensor and the fuel pump. (Fig. 2) Fig. 2 Filling the DEF Tank and Fuel Tank Some customers may add DEF to the fuel system in error due to the location of the DEF fill port. For example, on some full-size trucks, the DEF fill and fuel fill are both located behind the fuel fill door. It’s important to show customers the owner’s manual and other product materials that include details about the correct way to fill the DEF tank and how to distinguish the fill port for DEF from the fuel fill. To ensure the correct system is being filled, only remove one cap at a time. The DEF fill cap and the fuel fill cap (if equipped) should not be removed at the same time. With the capless fuel fill system, extra caution should be used. The DEF system uses a blue cap while the fuel fill is green. Fuel System Cleaning If diesel fuel is mixed with DEF, or if DEF or gasoline is added to the fuel tank, it may lead to repairs that may not be covered by the New Vehicle Limited Warranty. If the fuel tank is accidentally filled with DEF: Do not turn on the ignition Do not start the engine Do not drive the vehicle As soon as the ignition is turned on, the fuel pump will be engaged and contaminated fuel will be sent into the fuel system, which may potentially damage the entire system. Inform customers to have the vehicle towed to the dealership or a qualified service facility. DEF is a corrosive fluid that tends to form deposits on components. If the in-tank fuel pump has been run, then contaminated fuel has been pumped through both the low-pressure system and high-pressure pump. If the engine has been cranked, the entire fuel system from the fuel fill pipe to the high-pressure fuel pump, fuel rail, injectors, injector return fuel lines, high-pressure fuel pipes and low pressure return lines must be replaced. If the engine has not been cranked, the system from the fuel fill pipe to the high-pressure fuel pump as well as the high-pressure pipe from the pump to the rail must be replaced along with the low-pressure return lines. If the in-tank fuel pump has not been run, the fuel fill pipe, tank and fuel pump module should be replaced. Refer to Fuel System Cleaning in the appropriate Service Information for complete details. Fuel Pump Module GM has seen a number of failed diesel fuel pump modules that have been returned under warranty due to DEF contamination of the fuel system. DTC P1029 (Fuel Pump Phase U-V-W Circuits Open) set in the Engine Control Module (ECM), which indicates a loss of continuity with the fuel pump, is a potential sign that DEF was added to the fuel tank. Other signs of contamination can be seen on the fuel pump module itself, where there may be corrosion of the steel and aluminum components. (Fig. 3) Fig. 3 DEF contamination also may leach between the plastic portion of the fuel pump and the terminals, leading to fractured terminals and terminal failure. (Fig. 4) Fig. 4 Recognizing DEF Contamination Without removing the fuel pump module, it may be difficult to recognize DEF in the fuel tank. White crystals can appear in the form of residue (similar in appearance to salt) when it dries on components. (Fig. 5) Of course, the residue cannot be seen in the contaminated fuel. Fig. 5 Taking a fuel sample may be one of the most effective ways to determine if there is contamination. Taken from the bottom of the fuel tank or fuel pump module reservoir, the sample may show a cloudy mixture when it’s shaken. Any DEF in the sample will usually separate from the fuel within 20 seconds and sink to the bottom of the sample. (Fig. 6) The same reaction occurs on a larger scale in the fuel tank, where the fuel pump picks up the contaminated fuel. Fig. 6 TIP: New testing procedures for contaminated fuel are currently being reviewed. Look for additional details about fuel testing coming soon to Service Information. When servicing a vehicle with contaminated fuel, also check the fuel filter, which has a reservoir that collects water from the filter. The fuel filter reservoir should be drained. DEF and Fuel Don’t Mix It should be stressed to customers that if a mistake was made and DEF was added to the fuel tank, the vehicle should not be driven to the dealership for service. The vehicle ignition should not be turned on and the vehicle should not be started. These actions will help limit any damage to the fuel system from contaminated fuel. The New Vehicle Limited Warranty may not cover any fuel system repairs related to fuel contamination.

On LML, 'DEF quality poor' typically/usually meant that one or both NOx sensors needed to be replaced. They seemed to drift out of calibration. When the happened the computer incorrectly concluded that there must be a problem with the DEF. There were many incorrect diagnosis and theories while this was being sorted out. I hope they sample your def -- and presumably find it is ok. Assuming it was bad and just replacing it was one of the reasons there were some many issues with LML. (of course it wouldn't stay 'fixed' as they drifted in and out of range) Post back what they find with yours.

Is the change to uphill also when driving towards the sun when it is fairly low? When camera (behind windshield, ahead of rearview mirror is blinded (sun, snow, mud, bugs etc) adaptive cruise kicks out. I use adaptive cruise almost all the time. I've never had it kick out on a grade.

It's single from front to rear and the split for exit -- for appearance. 3.0L is a straight pipe from front to back -- all cat/scr/dpf stuff is under the hood. I don't know if all 3.0's are split at rear for exit, but mine is.

Are you using Blue DEF or Blue DEF Platinum??

In fleet order guide: 2023 1500 pickups get LZ0 2023 1500 SUV get LM2 Oversight or is the suv 3.0 not changing?

Are you using the gm backup alarm?

Just the ones that realize some only pull trailers with either no brakes or with surge brakes that don't use/need a brake controller. They do offer a brake controller thru GM accessories. It's not the same as the 'factory installed' version, but they do have an alternate. What I ever understood is why someone would spend as much as these trucks cost to order or buy a truck without ensuring it has the features they require. Money to burn I guess.

Long press of the start button, without foot on brake pedal will put the truck into 'accessory' mode. Give it a try -- it might also force the restart.

If the rust is loose, touch it up with a wire brush/wheel. Then apply the daubert product.

Several OTA updates since purchase in the fall of 2020. (it's a 2021 model)