This was more of a common issue with GM trucks years ago (look up Chevy Shake on this forum and on the Duramax Forum) if you are not aware. GM did get better with it, but it still does pop up, as it did with me when I purchased my truck a couple years ago. My issue ended up being tire related. The stock car-like Goodyears could not be balanced. The dealer warrantied those at about 6K miles and I upgraded to BFG KO2s...which did correct my issue. I'm now almost at 30K and the vibration has not returned.
If we choose to level or lift, I'm a firm believer in purchasing a quality engineered kit from a reputable manufacture. We invest a lot of money in these trucks, so, in my opinion, spend a little more now and it may save you in the long run (or leave it alone...na, we can't do that...ha, ha). The engineered leveling kits with UCA, diff drops, shock extensions, etc...will keep our front geometry as close to factory specs as possible. Remember, it won't obviuosly be at the factory spec..this is one of the reasons our ride stiffens. It also increases CV angles and tie rod angles. It also adds a little more stress to the idler and pitman arms. Aftermarket UCAs do keep the ball joints happier and increase the droop stop distance. These, in my opinion, are a must with leveling kits. The more you crank on the keys, the more stresses you impose on on the parts and the CV angles widen...and the ride gets worse. In order to be as close to factory specs and maintain them, a lift kit is necessary. But these cost more up front and some do require cutting and welding for installation...which make these permanent... If you know the pro's and con's of each, you can make an informed decision. You may end up replacing a few components a little earlier down the road with a leveling kit. If you are ok with this...go for the leveling kit. This is what I did. I also have my alignment re-checked along with rotating and RoadForce Balancing the tires every 10K miles. This confirms to me everything is staying tight on the front end. I've had my leveling kit on since about 6K miles and I'm almost at 30K now. Everything is good up front. No accelerated wear. I'm only cranked to raise about 2". The ride is slightly stiffer than stock. The Bilstein shocks ride much better than the stock cheap Rancho's... I'm running a kit from Central Coast Motorsports (ccmoffroad.com). They are a small shop in the Central Coast of California...they manufacture their own which keeps cost down. Check them out. The pic of CCMs UCA is when I still had the cheap Rancho's on my truck...
Has anyone seen this before? Recently, after starting the truck, I had a message pop up on the center screen to "Service Front Camera". It also had the dismiss button at the bottom. I didn't touch anything and it slowly faded away, but it got me thinking...hmm...maybe it's pre-wired for a front camera. I've had the truck since it was new and this message has never popped up before. We can't be this lucky???
Cognito is a good kit and I was headed that direction before I purchased mine, but decided to go see Danny at CCM. Years ago, I purchased some things from CCM as was very happy with them and their products. I am local in the area so it's easy for me to go by their shop. I have read on other posts that some Cognito UCAs were coming apart with welding issues. Some had great warranty support...others didn't. But regardless, they still had to replace the part. I also have known numerous people that have purchased CCM products. There has never been an issue...I also like the fact I am close if I need them... The Edge is a CTS2...monitor only.... Similar to you, my last truck was a '04 LLY. I had gauges on the A Pillar. I too had to learn the new technology with these new trucks. This is plug-n-play and plugs into the OBD2 port under the dash. I also purchased a center console mount from ProFormance Diesel in Bakersfield (pro-formancediesel.com). Plugged into the OBD2 port is not as accurate for EGT, but it does give me a close number for trending. It is expandable where you can add different sensors for more accurate results, but I chose not to go that far. Not really needed for me as I'm not deleting either...or doing any engine / tranny mods... Here is a pic of my CTS2 in the Pro-Formance center console mount. You have to remove the stock rubber "card holder" and cut a hole for the CTS2 cable. From there, it easily snakes through the extended floor console and over to the OBD2 port. If you need to return it to stock, simply remove the center console mount and replace your stock rubber card holder. There are company's that do make CTS2 mounts for the A Pillar if you choose...
Welcome to the Forum... For your leveling kit, check out Central Coast Motorsports in San Luis Obispo, Ca (ccmoffroad.com). There not too far south of you. They are a small shop and build manufacture there own products, which keeps the price down. I've had their leveling kit on my '16 Denali for about a year and half...no issues. If your going to level, I'm a firm believer in buying a full kit (CCM's or any reputable manufacture) that consists of Upper Control Arms, Diff Drop Spacers, Keys, and Shock Extensions (or replacement shocks). You can just crank the stock keys and align it...but you will wear parts prematurely...like ball joints, idler and pitman arms, etc. An engineered kit keeps things closer to our factory spec. Don't over-crank the keys or your CV angles really get away from being happy. Or, you can purchase the full lift kit...these will keep angles much closer to the factory spec... I'm running slightly below "true level" and my tire size has no rubbing issues, nor did I have to trim anything. But I am on the stock 20" wheels and BFG states these tires are 34" tall. I'm sure others can respond on the tire size you want with your rim spec's... Here is a pic of CCMs UCA if you want to compare to other reputable manufactures...
I would prefer to hook up to the battery so you are not cutting into a wire loom and splicing to an existing wire. Seems much easier to crimp on an eyelet on each wire from the light, cover in shrink tubing, and install on the battery. Then cover the wire in split loom for protection (and factory look)...I would also use an in-line fuse prior to whatever switch you chose (manual, magnetic, "mercury" style, etc...)
Nthdegreee: Just wanted to get back after checking the sensors on my truck...my warning (audible or seat vibration) is activated when the first yellow line lights up. This is the same on the front middle sensors, front sides, and / or rear sensors. I thought it was only when the red line lit up, but after checking, it is when the yellow's light up... Redwngr: you are correct regarding the wife...she has been pushing for a Yukon for awhile now...LOL...
Any reputable manufacturer that makes quality products will make a good leveling kit. In my opinion, "kit" is the key word. Using an engineered kit that consists of Upper Control Arms, Diff Drop Spacers, Torsion Keys, and Shock Extensions (or replacement shocks) is a kit that is designed to work together. We all know leveling is the "cheaper" way to lift our trucks, but utilizing all these components will drastically keep the factory geometry much closer to factory specs. Again, much closer to factory specs because depending on how high you crank, you'll get further and further from these specs...especially CV angles. Even with a good engineered kit, you may increase your frequency of replacing ball joints, idler or pitman arms, etc...but this replacement frequency can also increase with quality lift kits. Knowing this before we level or lift is the chance we take. Some may say...just crank the stock keys and don't purchase a kit. You can, but, in my opinion, your ball joint angles, droop stop distance, and CV Joints will be much more out of the factory spec... I purchased a leveling kit from Central Coast Motorsports (ccmoffroad.com). A small shop in the Central Coast of California. They manufacture their own kits which keeps cost down... Here is a pic of their UCAs on my truck...
The headlight TSB is 18-N-001 and was issued Jan 4th, 2018...below is a quote from a post on another forum... The attached pic of the TSB is hard to read...but you can easily Google Search it from the number... "After realizing that you can see the headlights shake just by closing the door hard I took it in to the dealer again. This time I was able to show them what I was talking about just by shining my lights on a wall in their shop about 30' away and shutting the door hard. Now they could see exactly what I was talking about. Then the service manager came out with a piece of paper. It appears GM is finally acknowledging the problem but has no intentions on fixing it. The service manager explained to me how the HID bulb works and said this is normal in HID's. I then told him I have two other cars at home with HID projector lights and neither do it. I also told him I have road in several different cars with this type of light and none of them shake. I ride to work with a guy with an F150 with HID projectors that paid almost half as much for his truck and they don't flicker. I also told him every time I run into someone with a GMC with HID's I ask them if their headlights shake and they all say the same thing "yes and it drives me crazy". He tried to tell me it was probably because of the stiffer suspension on the HD trucks. I simply said "stiff suspension?" I then told him to look at the wall as I opened my door and shut it firmly (not a full on slam just harder than normal). Then I told him I see that constantly going down the road over every little bump in the road and asked him if he thought that was "acceptable" on a $70K vehicle. I was starting to get upset so I regained my composure. He agreed with me but tried to defend GM as much as possible. In the end he then wrote the number for GM down on this TSB, told me to call and have anyone I talk to with this issue call and complain to GM. He said if enough people complain they will come up with a fix or recall. So here it is." Complaints can be filed through GM Live Chat also...
From what I recall, I believe the side sensors work the same as the fronts...I'm at work with the wife's vehicle and won't return home until tomorrow. I'll check it out then and update this thread... Yep...the real story...occasionally, the wife needs the truck so I'll take her car to work...and now she calls it "her truck." I don't think so!!! But, I do wear the pants in this family...as soon as I pull them out the dryer and fold her's first...LOL...
I am very satisfied with my headlights...as I am comparing them to my last truck which was an '04 LLY...so obviously these are much better. Although, I do have the headlight shake issue that GM just recently issued a TSB for... I did replace the fog light bulbs to LED...the stockers are old technology and were junk...couldn't even tell they were on...and when they were, the color was so off from the headlights. I purchased Xenon Depot 5202 LED CMB Bulbs ($49.99) for my fogs. These are a plug-n-play swap. They provide much crisper light to the front and the sides...and you can tell when they are on. No high beam flash from on-coming vehicles...and I'm leveled. I chose their 6000K color which matches the headlights well. It is very small to get your hand up in there for replacement, but temporarily removing the small bumper brace definitely increases this area to get your hand up in there...
I stand corrected...I was only going off memory as I remembered three distance settings...must have been the Forward Alert and not the Park Assist... My seat vibration (and / or audible warning - whatever is selected) only does come on once the yellow line indicators progress to red. There is no seat vibration / audible warning when only yellow lines are indicated. But, mine turns red at about 2 feet as opposed to "inches" from the front and rear bumpers... I do recall something about these distances in the manual...when they should start indicating and roughly what distance each line means...
If you haven't, maybe try adjusting the distance on the sensors? If my memory is correct, there are three different distance selections as to where the sensors first recognize an object. This may correct or "reset" your sensors...
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