redwngr

As long as you get the correct sensor frequency you will be good. 2020 should be using the newer 433 Mhz ones. If you want to do the wheel swaps (or do wheel rotations) yourself, spend $20 and get a tpms teach tool. The method of changing the air pressure in the tire to teach the locations no longer works on these trucks. (lots of dealers will walk around the truck and do the teach for you in their service receiving area -- free of charge and without appointment) You can get sensor from you dealers parts department or almost any tire shop or online. Some of the aftermarket ones are dual frequency (315Mhz and 433 Mhz)

Next question is usually 'how do I know it's in regen - I've never seen a message. -- You my learn to notice change in tone of the exhaust, slightly higher idle, if it's in regen and you're stopped, lower than expected mileage for the current operating condition. GM intended it to be a non-event, so does not provide an indicator. (it has been so since regens were a thing, starting about 2007) Regen on LML took about 30 miles, on L5P it is about 20 miles (at least my '18 was). The LM2 (3.0L) it usually takes about 11- 13 miles. There is such a thing as passive regen -- when the engine is heavily loaded and the exhaust gets a bunch warmer than it does when doing unloaded duties causing the soot level to decrease without introducing extra fuel with the 9th fuel injector. There is also a DEF injector. They use DEF whenever they are running. Sometimes there are post that incorrectly suggest DEF is only used in regen. DEF is to reduce NOx. Regen is to burn soot out of the exhaust filter. Regen can occur for several different reasons, the most common being soot level --- at least for a daily driver. It can also regen based on miles, engine hours or fuel burned. Article with a bunch of regen info: https://gm-techlink.com/?p=13566 The Diesel Exhaust System and DPF Soot Accumulation August 24, 2020 The diesel exhaust system on 2017-2018 Silverado and Sierra models and 2019-2020 Silverado 2500/3500 and Sierra 2500/3500 models equipped with the 6.6L Duramax diesel engine (RPO L5P) (Fig. 1) requires an occasional Diesel Particulate Filter (DPF) cleaning. Under normal driving conditions, the DPF cleaning occurs without any driving involvement. However, there may be circumstances that require a service regeneration to be performed. Fig. 1 DPF Soot Level Beginning with 2017 Silverado and Sierra models, the DPF Soot Accumulation is measured in percent instead of grams in GDS 2. The ECM will not try to perform a regeneration until the DPF Soot Accumulation increases to approximately 100%. If the DPF Soot Accumulation increases to 115% and the system has not been able to regenerate, the “Continue Driving” message will display on the Driver Information Center (DIC). If the DPF Soot Accumulation increases to 140%, DTC P2463 (DPF Soot Accumulation) will set and a service regeneration will be required to clean the DPF. There are two soot level readings in GDS2. One uses the differential pressure sensor to calculate the soot in the DPF and the other uses other engine data. If either of these reaches the threshold, a regeneration will be performed. Service Regeneration A Service Regeneration is designed to lower the soot accumulation in the DPF in a very controlled way. It is not as effective at lowering the soot accumulated in the DPF as a Regeneration Enable followed by a drive. Only perform a service regeneration if instructed in the appropriate Service Information. If there is a concern about the DPF Soot Accumulation, perform a regeneration enable and return the vehicle to the customer. Vehicle Idling Some vehicles may spend a lot of time idling. Use the following steps to aid in determining the equivalent mileage (kilometers): Record the total engine hours indicated on the DIC. Multiply the engine hours by 33 miles or 53 km. This represents an average speed of 33 MPH or 53 KM/H. The result should be close to or lower than the mileage on the odometer. For example, if a vehicle has 1812.3 engine hours and 60,837 miles (97,908 km) on the odometer, the engine run time would equate to about 59,806 miles (96,052 km) (1812.3 X 33 = 59,806) (1812.3 X 53 = 96,052). Since the calculated mileage is less than the actual mileage, the vehicle does not spend an excessive amount of time idling. If the calculated mileage is more than the actual mileage, the vehicle would be considered a vehicle that idles a lot and this information may be useful in diagnosing any issues. TIP: The engine hours formula should be used to aid in engine diagnosis only. It should not be used to determine any warranty claims. How Regeneration Should Occur The DPF traps the soot generated as a part of the normal operation of a diesel engine so that it is not sent into the environment. The process of regeneration enables the vehicle to clean the filter so it can trap more soot. Factors that determine when the ECM will try to perform a regeneration include: After approximately 36 gallons (136 L) of fuel used since the last regeneration. A maximum distance of 800 miles (1287 km) have been traveled since the last regeneration. A pre-determined number of engine hours since the last regeneration. A calculated or measured soot mass of 100% in the particulate filter. When any of the above criteria are met, the ECM will perform a regeneration as soon as all the correct conditions are met. If the ECM cannot perform a regeneration, the ECM will only look at the soot mass to determine to display the Continue Driving DIC message or to set DTC P2463. The ECM uses the following criteria to perform a regeneration: Vehicle in Drive BARO sensor 1 is more than 51 kPa (7.4 PSI) Engine speed between 500 and 4000 RPM Exhaust Gas Temperature Sensor 1 between 100 and 725 C Exhaust Gas Temperature Sensor 2 between 95 and 750 C Exhaust Gas Temperature Sensor 3 between 0 and 750 C Exhaust Gas Temperature Sensor 4 between 60 and 750 C Exhaust Gas Temperature Sensor 4 between 60 and 850 C Engine Coolant Temperature between 50 and 140 C Intake air temperature between -70 and 250 C Fueling from -1 to 165mm3 Vehicle speed from -1 to 160 km/hr No active DTC related to EGR, Indirect injector, or Throttle (boost) The vehicle does not have a soot level sensor to determine how much soot is in the DPF. It uses algorithms to calculate the soot mass. DTC P2463 When DTC P2463 sets, the ECM will no longer try to perform a driving regeneration and the vehicle will require the more controlled service regeneration. There are a number of factors that can cause the code to set, including: The driver ignoring the Continue Driving messages Leaks from intake or exhaust system Poor fueling in the engine Contaminated or bad fuel Externally damaged or worn components. Loose or improperly installed components Dirty components (air filter or TMAP sensor) Driving style, such as binary driving (frequently on/off accelerator or brake) High Soot Levels Factors that contribute to generating high levels of soot include: Charge air cooler (CAC) and Air induction system leaks. A restricted air filter. Exhaust system leaks that may cause inaccurate Exhaust Gas Temperature sensor or Exhaust Pressure Differential sensor values. Failed, intermittent, improperly installed, incorrectly wired or loose Exhaust Gas Temperature sensors may cause inaccuracies in the soot model. Look at all temperature sensors when the vehicle is cold to verify that they read close to each other. Improperly routed differential pressure lines. The exhaust differential pressure line should have a continuous downward gradient without any sharp bends or kinks from the sensor to the DPF. Leaks or internal restrictions from the Exhaust Pressure Differential sensor lines. A skewed or shifted Exhaust Pressure Differential sensor will cause inaccuracies in the soot model. A cracked or damaged MAF sensor housing. A skewed, stuck in range, or slow responding MAF sensor. Inspect the MAF sensor for contamination. Indirect Fuel Injector leaking or restricted. Externally damaged or worn components. Loose or improperly installed components. Water in fuel contamination. Engine mechanical condition, such as low compression. Vehicle Modifications Reducing the Number of DPF Regenerations If a customer asks what can be done to reduce the number of DPF regenerations needed. Explain that when the “Continue Driving“ message is displayed (Fig. 2), the vehicle should be driven safely at a steady speed as close to the posted speed limit as possible, until the message turns off, which can take up to 30 minutes. Fig. 2 In addition, driving with cruise control when possible will help the engine perform more efficiently as well as help the engine burn cleaner, resulting in less regenerations. Driving at a steady pace without aggressive throttle application also will reduce the amount of soot generated by the system. When descending an incline, use Tow/Haul mode to help with the ability of the vehicle to perform a regeneration. The use of the diesel exhaust brake on declines will also help adjust the gearing to allow the vehicle to perform a regeneration. Keep in mind that on 2020 models, the diesel exhaust brake may not be as noticeable as in prior model year vehicles.

I get them to quote anyway. Be sure to factor in shipping. Sometimes they are cheaper. Sometimes they are close enough...

Diff ratios used on 8 speed are different that 6 speed. I think you find that the overall ratio (trans and diff) with the 8 speed gives a lower low and a higher high than the 6 speed. Same deal with the max tow (NHT versions) which has higher (numerically) ratio diff's.

I'm glad they don't make all the extra features 'free' -- because 'free' just means they added the cost but don't show it to us and don't have a way to avoid it --- which means we all have to pay more for out trucks, because they have a bunch of features we don't want or need. Some threads ****** about 'extra' cost for extra features. Some threads ****** about all the 'extra' unnecessary stuff that makes vehicles more expensive. Automakers aren't ever going to make everybody happy. Their challenge is to make happy the number that makes their business successful -- kinda like every other business.

Remote start it a couple minutes earlier....

I think I might pass on SuperCruise. I don't spend enough time on the current mapped highways to make good use of it. UtraCruise -- now we might be talkin'... https://www.jdpower.com/cars/shopping-guides/what-is-gm-ultra-cruise https://media.gm.com/media/us/en/gm/home.detail.html/content/Pages/news/us/en/2021/oct/1006-ultracruise.html

I wonder why it works different from SD card than from a usb stick? usb browse works fine when stopped, but 'not permitted' when driving.

Anybody tried loading the mp3's to their phone and browsing / selecting tunes that way? (todays phones have more than enough storage capacity to do this)

What happens if you respond to the voice prompt by saying 'navigation' ?

Even the WT system can have a phone connected. Perhaps it doesn't show until the truck knows about it by Bt pairing or by plugging it in? From order guide: 2022 2500HD Standard on WT and Custom IOR Audio system, Chevrolet Infotainment 3 system, 7" 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. Standard, but upgradable, on LT (same thing, but upgradable...) 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. Available on LT, standard but upgradable on LTZ 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 or (ZL6) Advanced Trailering Package. Includes (PZ8) Hitch Guidance with Hitch View. 2 - Includes (PZ8) Hitch Guidance with Hitch View. 1 = on LT 2 = on LTZ Available on LTZ, standard 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. Includes (PZ8) High Guidance with Hitch View. 2 - Includes (PZ8) Hitch Guidance with Hitch View. 1 = on LTZ 2 = on HC

Winner! Winner! That's one one mode I didn't try. In my defence, this is my 4th 4wd truck since the last time I put one in 4LO, so I had to check this out. Sure enough it does: As much as we like to bash GM about things we don't know the reason for, we likely should have known the arrow had some purpose. Arrow indicates high range or low range. Lettering to left of arrow will be 2WD, 4WD or Auto

This may help a little with LT, SL (standard load) and other tire size / type designations. https://www.tirerack.com/tires/tiretech/techpage.jsp?techid=55 Or at least be a start for further research.

Nope. At least not on my gmc. The others above are correct -- it points towards the truck front in the diagram. Mine's a sierra, and the diagram is slightly different, but it also has the arrow. Doesn't matter what 'mode' the transfer case is in (2wd/4wd/auto) and doesn't matter if it's in Park/reverse/drive -- the arrow is always there, pointing 'up' on the dash, which is towards front of truck since it's the top pair of wheels that indicate steering angle

30 years ago we didn't have the pressurized fuel injection system that is used today...

Only guessing here, as I never use the 'auto' mode. (I'm just glad it's not necessary to manually lock the hubs anymore) Bottom bar shows which operating mode is selected... Any chance the arrow is indicating that the 'auto' control is in 4wd mode? Have you checked to see if it's there in 2wd and/or 4wd rather than in 'auto'?

In some areas, PF66 filters seem to be currently in short supply too. It's used on the 3.0L and the 2.7L turbo.

21 Denali 1500 Retrax mx bedcover (they poly one...) Handle does not interfere with the rails. I still use the the bumper step with stake pocket for a handle more often than opening the multipro inner and folding down the handle.

Anytime you make a surface colder than the dew point of the air passing across it air there will be condensation. (that's how de-humidifiers work, and is the reason AC units create condensate ) 'Here' we sometimes get conditions that can do that to the outside of a windshield -- but not very often. Sometimes changing HVAC settings can help. Sometimes it is necessary to resort to an occasional cycle of the wipers.

From krillab's post, it's already the PIP has already been updated to version 5823B, but it seems to apply to all 20 and 21 LM2 -- lifted from another site --

I was impressed the first time I saw and electric up/down antenna.

Ford developed the 10 speed that is used in the 1/2 tons As I understand it each uses there own transmission control. (as published in the media, they also share a gm developed 9 speed fwd trans) Each has their own HD transmission. GM builds theirs. In media video introduction they discussed in interaction with allison during development Pics of the HD pickup transmissions: Ford HD 10 speed GM HD 10 speed GM/Ford 10 speed

Old farts will recall GM had the radio antenna in the windshield for may years.

There are many pickup trims and each trim also has many options/configurations available -- because there are so many opinions about what is 'worth it'. I never understand why people get so hung up on why / how someone else chooses to spend (or not spend).

GM always has the programs listed on the websites. For sure they are not currently as lucrative as they often are when inventories are high. Of course these are listed for 2021's..... At a random zip code: 2021 SILVERADO 1500 CREW CAB MAKE IT YOUR OWN. FOR VERY WELL-QUALIFIED BUYERS 2.49% APR FOR 72 MONTHS WHEN YOU FINANCE WITH GM FINANCIAL† PLUS $1,500 CASH ALLOWANCE† 2021 CHEVROLET Silverado 1500 Crew $1,500 Customer Cash 2021 CHEVROLET Silverado 1500 Short Crew 4WD Custom w/Engine, 2.7L Turbo Ultra Low-Mileage Lease for Qualified Lessees. $259/month for 24 months. For Current Lessees of 2016 model year or newer Chevrolet vehicles : $3,709 due at signing (after all offers).** $0 security deposit. Tax, title, license, and dealer fees extra. Mileage charge of $0.25/mile over 20,000 miles at participating dealers. there were 2 other (5 in total) programs listed for 1500 pickups HD's only listed one