redwngr

You realize that dielectric grease is non-conducting? It's great for preventing corrosion, but it shouldn't be on the conducting surfaces.

IIRC, they were available on Avalanche in the early 2000's -- so 15 years ago. I recall wondering then why they didn't have something similar for the pickup. Climbing into the bed with the tailgate down is much easier with the steps. (especially on an HD )

While we're on the subject of fastening wheels, do NOT use lube on the threads. The spec applies to dry threads. Lube (including never-sieze) will result in over torquing.

Rear Axle (1500 Series) SAE 75W-85 Synthetic Axle Lubricant Front Axle – Four-Wheel Drive SAE 75W-90 Synthetic Axle Lubricant

Even on the '17's they are still using both. Depends on trim, cab and engine.

Yes. they seem to be 'loose' to me. Extra care being sure the the contacts on both truck and trailer plugs are clean will help.

For the curious, the 140 ft-lb spec is in the 'Capacities and Specifications' section in the back of the owners manual.

Optional on SLT as well. Standard on Denali. Optional on High Country (as part of High Country Premium Package (PDT))

But you're in Georgia. Winter changes to fuel are regional.

http://www.gmc.com/gmc-life/trucks/five-advantages-of-2016-sierra-hd-digital-steering-assist-system.html FIVE ADVANTAGES OF THE 2016 SIERRA HD’S NEW DIGITAL STEERING ASSIST SYSTEM ADVANCED TECHNOLOGY RESULTS IN STEERING THAT’S LIGHT AND EASY IN THE PARKING LOT, CONFIDENT ON THE OPEN ROAD, AND EASIER THAN EVER TO USE. Working hard doesn’t have to feel hard – in fact, the 2016 GMC Sierra HD’s new Digital Steering Assist system makes driving and maneuvering a heavy-duty pickup easier. The new variable-effort hydraulic power steering system, standard on most Sierra HD double and crew cab models equipped with SLE, SLT, All Terrain, or Denali trim levels, proactively adjusts power steering assist levels in order to increase confidence while on the open road “Modern electric power steering systems offer a lot of flexibility when it comes to changing the steering weight and effort,” says Christopher Bither, vehicle performance/ dynamics engineer for the 2016 Sierra heavy-duty pickup truck. “Digital Steering Assist is unique as it allows us to offer a similar range of tuning possibilities in the 2016 Sierra HD, yet retain the robust durability of a conventional heavy-duty hydraulic system.” Here are five advantages you will feel when you take the wheel of a 2016 Sierra HD pickup truck equipped with Digital Steering Assist: Speed-Adaptive: Power steering assist is often tuned to provide enough assist to make low-speed maneuverability – in parking lots, for example – where resistance is greater. While a light steering weight is great in that situation, it can feel too light once a vehicle is up to speed, and might require constant correction. Digital Steering Assist delivers the best of both worlds. A controller connected directly to the steering gear actively measures vehicle speed, steering wheel position, and steering gear pressure and can adjust the amount of effort a driver needs to input depending on the situation. At low speeds, steering effort is 20% lighter than a comparable 2015 Sierra HD, while at higher speeds, the steering system provides a heavier feel, which provides better stability and consistency. Tailored for Tow/Haul: A truck loaded with cargo or pulling a large, heavy trailer handles much differently than an empty truck because of the added weight. A steering wheel that normally feels light and easy to turn may require greater effort once the truck is laden. Sierra’s Digital Steering Assist solves that: When the driver pushes the Tow/Haul switch -- which also adjusts transmission tuning -- Digital Steering Assist responds by increasing low-speed assist and reducing static steering effort another 10%. Return to Center: Traditional heavy-duty steering systems often required a fair amount of driver input to bring the steering wheel back to center, even with power assist. Because Digital Steering Assist can actively adjust assist levels, it can greatly reduce the amount of effort required to center the steering wheel, which can be beneficial when maneuvering in small parking lots or other tight quarters. Counteracts Road Pull: Roads with significant crowning can prove tiresome, as even a vehicle with perfectly-aligned suspension will inevitably pull to one side. Instead of forcing the driver to constantly dial in steering to counteract for this pull, Digital Steering Assist can recognize the situation and proactively assist. “Digital Steering Assist will recognize when the driver is applying a certain amount of pressure offset over an extended period of time and then keep the pressure value there,” says Bither. “Instead of the driver constantly holding the truck in a straight line, the steering gear does it for you.” Variable Flow Pump: In addition to varying the weight and effort of the steering system, Sierra’s Digital Steering Assist system goes a step further by utilizing a variable-output hydraulic power steering pump. When the system is under a light load – like on a long, straight stretch of highway, for example -- the pump’s output can be scaled back, reducing engine load and improving efficiency. Digital Steering Assist is one of many new enhancements incorporated into the 2016 Sierra HD pickup truck. New HID projector-beam headlamps, complete with GMC signature LED lighting, is now standard on all Sierra HD models. A remote locking tailgate is available for added convenience. A new gooseneck/ 5th wheel prep package, which adds a frame-mounted hitch platform, a bed-mounted trailer harness, and a spray-in bed liner, will be available on Duramax-equipped models in the first quarter of 2016. Inside, wireless phone charging is available in Sierra pickup trucks equipped with a fixed center console, while updated IntelliLink infotainment systems offer expanded connectivity, including Apple CarPlay and, on select models, Android Auto.

It shouldn't be continuous.

5.3 and 6.2 0w 20 4.3 and 6.0 5w 30 Oil viscosity recommended is to suit the oil pressures and volumes along with bearing clearances.

The new fluid for the new 1500's is intended to be 'lube for life', hence no plug. (and hence no change interval in the maintenance schedule)

Perhaps it's the torque converter locking / unlocking.

Update: I stand corrected. The adjustable headrestraint instructions were copied from the 2016 Denali OM. The 2016 Sierra (not denali) does NOT have this instruction. Seems we've learned another difference between Denali and SLT.

That was cut and paste from the OM. EDIT: it was from the deanli OM, not the regular sierra om.

The head restraints adjust forward and rearward. To adjust the head restraint forward, grasp the head restraint and pull forward to the desired locking position. To adjust the head restraint rearward, grasp the head restraint and pull forward fully until the mechanism releases and allows the head restraint to return to the full rear position. EDIT: this from the 16 denali OM. The non-denali om does not have these instructions.

Whenever I've had that message it's been poor connection between the truck and trailer plugs.

'Top Tier' is a certification of gasoline and additives, not of octane level. National brands and larger regional brands will all have the certification. Discount independents may or may not. http://www.toptiergas.com/ Some don't wish to pay for certification and may have the full package without it. It's unlikely that a single tank of top tier, or a single tank that isn't would be noticeable to most.

It's also about the whiners that say ford has this, why can't gm....

NKC was also included with non-denali 6.2's prior to 2016. My 2015 SLT had it. Never did learn of any way to turn off to test. This is from the 2015 1500 sierra order guide: NKC Noise control system, active noise cancellation 1 - Included and only available with (L86) 6.2L EcoTec3 V8 engine. (The '1' indicated it was only available on SLT, 1500 Denali's were in a different guide section) It also came with the 6.2 on 2015 1500 silverado (which meant only on LTZ's and High Country

Probably a silly question, but does your phone have the AA app downloaded? And AA only works when the phone is connected by a usb cable -- it won't work over bluetooth.

It depends when the 2016 truck was built. AA software was not available til about march, but earlier 16's can be reprogrammed. Trucks built when it was available would have it in factory programming. In about April they announced that from about mid May that they were building a bunch of trucks with IO5 radios without the necessary hardware to support AA. These trucks were issued with a 'credit' since the feature would not be available. Because it is a hardware change, these trucks cannot be updated to AA. RPO code (check glovebox label) for trucks equipped with the non-upgradable IO5 radios is CPO.

M My 16 moves and clicks too. Haven't had it looked at yet.

Are you sure it's not back of the console in a Yukon / Yukon Denali? IIRC, 'Tri-zone' climate control is standard on them.