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!