swathdiver

Absolutely! These forums are legion with posts of people complaining that their truck wouldn't go into 4WD when they needed it to. Most of them hadn't used it ever or in years. I try to run mine through the paces every month or so and drive it a few miles on a dirt trail near the house a couple times a year if not already off-roading.

If this were mine, I'd talk to my local PDR guy first.

Z55 on that generation. Only the Denali and Escalade Hybrids got Z95. Anyhow, many of the guys who ditched the Z55 components for a dumb suspension eventually converted it back. The truck will not ride nice with 20 or 22 inch wheels and those low profile tires without the Z55 system. My Yukon XL has the dumb suspension and rides great with 17 inch wheels on stock size tires. The fellas on the TahoeYukon forum can tell you where to get the best prices on the shocks and struts and air compressor. My own preference is always GM OE and ACDelco Professional/Gold when OE is not available.

This is a wear item. After about 5-7 years they start sweating, then weeping then dripping then leaking after 7 to 10 years depending on climate and mileage. A man ought to inspect his vehicle regularly. This is not new to your 2019, GM has been using this setup since at least 1982 as I had them on my Oldsmobile back then.

The archaeologist's shovel has never disproven the existence of God. Neither has science. God created science and all of its laws and math as well. It's as obvious as walking outside and looking up at the sky. So many deny the obvious because they love darkness (their sins) more than light (accountability). It's a wonderful thing to have a personal relationship with the Creator through His Son, Jesus Christ.

God did that. It's still Jesus is the reason for the season.

Merry Christmas! Our church, meeting in the woods on Christmas Eve, it was great. "And, lo, the angel of the Lord came upon them, and the glory of the Lord shone round about them: and they were sore afraid. And the angel said unto them, Fear not: for, behold, I bring you good tidings of great joy, which shall be to all people. For unto you is born this day in the city of David a Saviour, which is Christ the Lord." Jesus is the reason for the season.

When you're ready to get after this, get a temporary subscription to AllDataDIY for access to the troubleshooting guide and shop manual so you can solve the code correctly without wasting time and money. There might be a problem with the ECM but more than likely it's the aftermarket parts, been there, done that. Merry Christmas!

These trucks do not take kindly to aftermarket parts. Even though Delphi is an OE supplier, if it's not in a GM Original Equipment or ACDelco box/bag, it's not calibrated the same to work with the computer system.

Hub bolts are supposed to be replaced, same for spindle nut if you a front differential. 15719028 is the one for the hub bolts. That's what we use.

Keep dreaming Atlas, keep dreaming.

Same here Stan. They get replaced after 4 years or so and or when they are down to about 1/2 usable tread depth. The old tires get sold for a couple hundred bucks. Tires are what's between you, your wife and the road. Get the best you can afford and replace them before they wear out.

CAFE is gone, doesn't exist. There are no emissions standards to take 36 months to execute anymore. The phony Endangerment Finding will be gone soon too. A new administration cannot undo these changes, they are being cemented in place with legislation that requires a super majority vote in both houses to pass. Liberty over Tyranny!

It was included in other legislation that was to be voted on this month but was removed for reasons forgotten by me.

I'd like to add to this post, in my example battery above, my truck's computer calculated its state of charge around 75% for almost the entire time it was in the truck. My next one spent a couple years in the low 80s and then the mid 70s until it was ready for replacement. That one exceeded its warranted life by one month!

In my GMT900 trucks, both steel and aluminum driveshafts are limited to 5,000 rpms. Same for the steel front driveshaft. If we assume the same applies to your generation truck, your driveshaft would be turning 4,977 rpms at 142 mph in 7th and 8th gear with the tires currently on your truck worn down to 2/32nds of an inch. At 143 mph, the driveshaft would be turning 5,013 rpms. With 3.73 gears your top speed is now 123 mph with the shaft turning at 4,973 rpms. With 4.10 gears your top speed is now 112 mph with the shaft turning at 4,982 rpms. Now having said that, we've seen on this and other forums many photos of aluminum driveshafts twisted into pieces when fellas took their K2 generation trucks to the magic number of 112 mph. That's the speed several reported going when their shafts self-destructed. We also have photographic evidence of a stock tired 2012 Yukon XL Denali going 143 mph or so and his driveshaft would have been turning about 5,400 rpms.

I'm using a different axle in a different truck and incidentally, no, didn't have to change carriers as it started with a 3.42. In both cases, the carriers are smaller for 3.23 and lower numerical numbers but a spacer is made to accommodate the higher numerical numbers but it is not as strong and many shops won't use them. A carrier change is required to do it right.

CAFE is no more. CARB has been neutered. Waiting on the passage of HR4117 to cement these changes.

With the proper tools you can measure your battery's state of charge. A battery with a state of charge below 65% is due for replacement. A good scan tool can determine this or you can take a voltage reading in the morning with a multimeter and note the outside temperature. Compare that data to this chart will give you an idea of it's current health: A battery tender that can desulfate the plates can rejuvenate a worn battery. I once got 48 months out of a 30 month battery that had been completely discharged twice.

Here are your effective ratios and rpms at speed as configured now: 3.42s: 3.73s: 4.10s: 4.30s: https://demandaam.com/expview/976-RearAxle-Salisbury-12Bolt The Ram with the 5.7 Hemi and ZF 8-speed transmission can come with 3.92 gears. You're equivalent would be 4.10 gears. So, it's not too much 1st gear as some say. Those trucks leap off the line at the track like nobody's business.

You can change the carrier to run a lower gear. The carrier you have is only good for 3.23 and lower (numerically) and the other one is good for 3.42 and higher.

You will certainly notice the change. I could even tell the difference between 3.42s and 3.73s. You might consider 4.10s with the 33s. Do you have the 8-speed transmission?

Forgot about these: https://www.amazon.com/dp/B08R5YYQJ6/?coliid=I32XY2X1A735CQ&colid=M4KI6N2ABT9N&psc=1&ref_=list_c_wl_lv_ov_lig_dp_it https://www.amazon.com/dp/B017MTFIYE/?coliid=IF3B19GAJN0CK&colid=M4KI6N2ABT9N&ref_=list_c_wl_lv_ov_lig_dp_it&th=1

Gotta Stop Doing This:

Could be low on refrigerant but check or replace the cabin filter first.