Have you tried your friendly GM dealer's parts department? GM had factory ones available for the srw (but not the dually) They were standard on 2018/2019 SLE/SLT/Denali 3500 B1J Wheelhouse liners, rear 1 - Not available with dual rear wheels. Deleted with (ZW9) pickup box delete.
Not sure if this is the same coastdown/decel noise, but there is a bulletin regarding one that can be documented at a slower speeds. https://gm-techlink.com/?p=12285 Transfer Case NVH Issue During Coast Down November 20, 2019 A transfer case noise, vibration and harness (NVH) concern may be found on some 2020 Silverado 2500HD/3500HD and Sierra 2500HD/3500HD models equipped transfer cases RPO NQF (Electric Shift Cont, Two Speed Transfer Case) or NQH (Active, Two Speed, Switch Activated Transfer Case). In some instances, a clunk sound may be heard during a coast-down event. The NVH condition may be the result of a misalignment between the transmission output shaft and the transfer case input. (Fig. 15) The misalignment could cause the transfer case shift collar to slip out of engagement. Fig. 15 If these conditions are evident, road test the vehicle up to 40 mph (64 km/h) on a smooth, flat road. Allow the vehicle to coast in Drive to below 10 mph (16 km/h), without using the brakes, and listen and feel for any bumps or clunk sounds from under the vehicle. Repeat these steps at least eight times in order to verify the condition. If the sound is verified to be from the transfer case, the transmission output shaft may be misaligned. It will be necessary to disconnect and reconnect the transfer case to the transmission. Misalignment Correction Remove the three transmission mount nuts, the rubber hose from the transmission crossmember, and the transmission crossmember. Also remove the transmission mount from the transmission and discard the mount bolts. Loosen all 12 transfer case bolts, but do not remove the bolts. It may be helpful to use a screw jack to raise and lower the transmission for better access to all of the bolts. With the bolts loosened, slide the transfer case rearward so there is a minimum gap of 1/2 inch (13 mm), but not more than 1 inch (25 mm). (Fig. 16) Next, slide the transfer case forward until it is contacting the transmission again. Fig. 16 Tighten the 12 transfer case bolts in the following sequence. Torque the bolts to 41 lb.-ft. (55 Nm). (Fig. 17) Fig. 17 TIP: When tightening bolts 10, 11, and 12 in the sequence, remove the bolts and clean the threads on each bolt and in the transmission with brake cleaner, and then blow out the hole with compressed air to ensure there is no fluid left in it. Failure to do this may lead to stripped threads. Be sure to use two new bolts when installing the transmission mount on the transmission. Reinstall the transmission mount nuts and the rubber hose to the transmission crossmember. Refer to Bulletin #19-NA-216 for additional information.
You should be able to override the anti-lockout - which normally checks that the number of fobs it detects in the vehicle has reduced (it does this to decide of you have taken the keys with you) . If lockout protection in effect, it should chirp 3 times. Lockout Protection can be manually overridden with the driver door open by pressing and holding 'lock' on the power door lock switch. Open Door Anti-Lockout If equipped, the Open Door Anti-Lockout is turned on and the vehicle is off, the driver door is open, and locking is requested, all the doors will lock and the driver door will unlock. The Open Door Anti-Lockout feature can be turned on or off. See Vehicle Personalization 0 157 There are other anti-lockout protection items outlined in the manual. My question is why not just use the fob, and lock it from in the house?
I've noticed that too. I also find that if I'm watching one of the fuel economy graph screens, and am running on a 'mostly level' cruise, that the instantaneous fuel economy will run somewhere around 10 mpg less than when not in regen. I don't track frequency anymore, but when I was they were about 400 mile intervals. More frequent than my LML, but they were shorter duration. Exhaust also sounds different, but that's tough to notice unless at parking lot speeds. Currently somewhere over 25,000 miles.
Weight is a factor when accelerating and when climbing. Aero (frontal area, and wind) is the factor all the time -- and this THE factor when on level cruise. Aero is also the reason speed is a big factor.
I suspect you are right. But doesn't apply to the HD's. (ya I know, this is the 1500 section) One of the mpg videos about the 3.0L was talking about the rating difference between the sierra and silvarado. part of the explanation is that the fed regs require the weight of an option be included for testing if the 'take rate' for the option is over a certain percentage. Sierra's typically sell with more content so higher weight used. That and slightly less aerodynamic and 3.0 in sierra ends up with a lower rating. I would guess the regs also require the weight used for the rating must also include a certain % of max fuel weight. From time in tier one auto suppliers I do know that if you can save them weight on any vehicle, it is a big deal. Better economy ratings sell vehicles(for some). There is also the fleet cafe thing that needs to be met.
Starting with the new chassis in 2011 long and standard bed trucks both came with the 36 gallon tank. (I went form a long bed '04 to a standard bed '10 and was surprised how much I missed the larger tank. They fixed that in '11 and I quickly upgraded. They '18 2500 till has a 36 in the 6.5' box and is the one being run in the previous post))
I'm with ya. Guess the poster doesn't want us to see them, or they would post in a format that most can see. Much easier for one person to change format prior to posting than for 1000's to go searching for a conversion program.
On metric trucks, the painted faces on gauges are in Celsius, but the electronic stuff is still selectable for inch or metric units. He either prefers inch units (like me) or displayed the inch units since there are more inch unit vehicles represented on the forum. The fuel economy distance on metric trucks is 100 km. When switched to inch it still uses the same distance (100 km=62 miles) (other choices include 31 miles, which is 50 km, etc) With a denali dash, the electric gauge faces (instead of painted) will also switch to inch units. On the GM' trucks the inch unit displays use US gallons. They don't offer a choice for imperial gallons.
Anybody have thoughts on the wheels/tires on the Denali CarbonPro? It comes with (SGM) 22" high gloss Black wheels (and all season tires), and doesn't show options for 18 or 20's. AT4 CarbonPro still showsStandard (RT5) 18" machined aluminum with Dark Grey accents wheels )LT275/65R18C MT blackwall may be upgraded to (NZQ) 20" 6-spoke Carbon Grey painted aluminum wheels.
With the right weather conditions I've had frost on the inside of the windshield -- but not very often. The right combo of internal moisture and weather conditions and it appears.
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