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2014 Sierra crew 4x4
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Silver space ship's Achievements
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I've search the web on and off for months, watched every YouTube video and read every Amazon review for the encoder motor and can't find a single person that has an fix for my problem. 99 Silverado 1500 with 165k. Bought the truck knowing the 4x4 didn't work but auto 4x4 did. First thing I did was put a new front axle actuator in it and confirm it was actually pushing out when called for. Also checked all my fues and cleaned the ground under the door. No check lights are on for the 4x4 system all lights on the switches work as they should. My scan tool shows everything is working as it should be. Front actuator is locking and trasfercase case is enabled. I can hear the encoder motor shift and I can get all modes of the t case, just that the front wheels dont pull it. Last night I jacked the truck up on 4 jack stands so I could let the wheels spin. Sometimes I'd get a front tire to spin in 4hi but if I stopped each front tire by wedging a pipe under it the front drive axle would stop spinning. I know the truck is shifting the t case because I can still put it in neutral, 4low (but works as 2low but definitely drives in a low gear) and auto 4wd (that works great still) and 2hi as well as 4hi that doesn't pull the front wheels. I bought a new encoder motor but I feel like because everything is shifting I'm wasting my money putting it in. I'm totally out of ideas other than something internal with the t case.
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Original poster here. Wow, it's sad to see this still going on. I get updates every day on this topic but honestly I try not to read them anymore. I did want to share that after getting rid of my Silverado that the Seirra I traded for has always been much smoother. I've got 42k on the Seirra now and just put new tires on a few thousand miles back. I ended up going with the Kumho Road Ventures AT51's and I will say that the truck did get even better with these tires. A few weeks ago I noticed my truck was smoother than I've ever noticed it before it was like I was in a Buick, it was crazy. I don't know if I just had the perfect tail wind or what but it was like glass! It's usually pretty good but never that smooth. Now just the other day I parked my truck outside my garage with the front tires on my garage apron and the rears on my gravel driveway. The apron has a slight incline to it. It was parked from Friday when I got home and I didn't drive it until Monday to go back to work. I don't know what happend or why but my truck shook for 10 miles going to work that morning worse than my old Silverado ever did. Got to work and thought I must have mud in the wheels but when I look they were clean. Drove home after work and the truck had been just fine ever since. This isn't the first time I've noticed it shake more after parking without moving it for a few days. I've noticed it with both trucks. If I leave the truck level on the driveway it seems fine after a few days so I don't think it's the tires flat spotting. I don't know what it would be but it's almost like when it's parked with the front end higher something is draining out of or into something after its sits for a few days inside the tranny or something.
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Post your 2014+ wheel/tire set-up
Silver space ship replied to BlueWrapper's topic in 2014-2018 Silverado & Sierra Mods
I did all the common stuff, road force balance and even new wheels and tire but still never got it to go away. Even had a engineer look at it and tell me it was normal. I went to the dealer to trade it in on a 13 f150 but ended up getting another 14 but a Sierra this time. The Sierra is much better but at times a vibration for the first few miles but it always goes away, some days it's worse than others and some days it's like it's not even there. I would swear it's the tires from sitting but doesn't explain why some days are different than others and some days it's gone in a mile and some days it takes 4 miles. I could swear it's getting better with more miles on the truck and seems like I don't notice it more often than I do lately. Overall much, much better than the Silverado was. I'm do for new tires before winter so I'm almost nervous about it because of how nice it rides now. Funny looking back when I posted that, I was afraid I was going to get jump on for posting that thread being so new to the forum. I didn't think people would believe me! I still get updates emailed to me daily on that topic but I only read them from time to time, still seems like no fix for most. -
Post your 2014+ wheel/tire set-up
Silver space ship replied to BlueWrapper's topic in 2014-2018 Silverado & Sierra Mods
If I rember right I got 100.00 off few years back on Black Friday. -
Headlight Illumination Issues
Silver space ship replied to deputy's topic in 2014-2018 Silverado & Sierra Troubleshooting
Thanks to this forum I told my dealer about the headlight TSB, They hadn't heard of it. Got it done today and I don't know if it's just placebo effect or what but to me it seems WAY better! -
Believe me I know about what has been done I'm the OP of this topic. Not all the vibrations are the same and others have posted the same issues I have when first driving their trucks in the morning. My 2014 GMC has some different vibration characteristics then my 2014 silverado did but it's for the most part the same just smoother at highway speeds. It was 45 degrees again this morning and I let the truck warm up for 11 minutes, tranny temp was 70 when I took off. The vibration wasn't even close to as bad as yesterday it was it same old vibration I've had that comes in around 45 that I have been experiencing most the summer. Tomorrow I will not let it warm up and see if it was as bad as yesterday.
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So this morning temp was 45 and it really vibrated bad (possibly the worst so far) for the first 2 miles, after about 4 miles didn't really notice any. Defiantly thinking my vibration is cold engine or cold tranny related. What's going to happen when it's -40 this winter? Tomorrow I will let the truck warm up for 10 minutes before I drive and see if that helps.
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When I started this post I thought I might be the only one, and know body will believe my thinking I was just trying to stir the pot. I had know idea if others where having issues. Sadly I never thought it would have turned into this.
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I'm the original poster of this topic and I'm on my second truck and now have about 6000 miles on my new GMC truck. First off this one is better then the last Silverado as far as vibration but it still has some. I would say cruising speed is better but not perfect (I try to talk my self out of it having a vib at hwy speeds to keep my sanity). I don't know if I have the 73 mph vibration because honestly I don't think I've had it over 70 yet, and if I do it's not going to bother me because if in 6000 miles and I have drove over 70, well you get my point. My biggest gripe is when I leave my driveway in the morning it really shakes for the first 4 to 6 miles. I've tried telling my self it's just the tires flat spotting from sitting over night but I'm really starting to think its something more because it can sit for days and it's never worse then if it just sits overnight. I started to think it was motor related so I started letting it warm up for up to 10 min and it didn't seem to help. I've read back about 10 pages now and have found 3 people with the same issues and I'm leaning more to cold tranny temps. I never thought to look at the tranny temp gauge but even after a10 min warm up the tranny probably isn't very warm yet. My ride to work sucks but the way home is always better but now that it's getting colder out I'll see if that changes. There was this spot on my way home from work where my silverado shook and drove me nuts while getting up to speed and the gmc seems to be so much better, almost no shake at all but I have been accelerating faster with this truck then the last one. Today I decided to accelerate slower like I did in my old truck and I got the same vibration. The only difference is, slow or fast in my silverado I got the vibration. It's been interesting comparing two trucks to each other. Some problems are the same such as moving seat issue and vibration but I really thinking the GMC (current one) might actually have more issues (mostly small) then the first one that was the first 2014 to roll of the dealer lot 10 months earlier.
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Ok I did a test, water bottle in one cup holder about 1/2 to 3/4 full and a plastic cup with water with ice cubes in. The water bottle looked like the one video and the plastic glass no vibration at all just like the other video. After the ice melted down to only 2 pea sized pieces it still showed no vibration but as soon as all the ice was melted the cup and water bottle were exactly the same. Case closed! Ok I did a test, water bottle in one cup holder about 1/2 to 3/4 full and a plastic cup with water with ice cubes in. The water bottle looked like the one video and the plastic glass no vibration at all just like the other video. After the ice melted down to only 2 pea sized pieces it still showed no vibration but as soon as all the ice was melted the cup and water bottle were exactly the same. Case closed!
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Mine looks just like hicks video too, and I didn't think my was even bad when I compare it to the 14 silverado I had. My water bottle shakes like that at 60mph (and probably slower) and I just figured it was the road but after seen the second video I'm blown away by how smooth that truck is. Question is, in the smooth video is there ice cubes in the drink? That might make a difference, I'll have to,give that a try. Like I said, I thought my Sierra was smooth but maybe my silverado was so bad that it just makes me think it's smooth.
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with the 20" wheels you have less side wall and because of that a rougher ride, so GM has the 20" at 32psi cold to help dampen the ride and the 18" wheels at 35psi. Believe it or not it makes difference in gas mileage too.
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Yep, the new Fargo mini series on FX is based from my town of Bemidji so if you watch that you'd see how much crime we have:) I thought of it possibly being tampered with but it was raining hard and I was parked all alone in plane sight of the doors, plus it wouldn't make it crank for a few seconds and stop then start cranking again.
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Yesterday ran to Home Depot, came out 10 minuets later started to crank the engine over and the cranking stopped for a few seconds but I held the key and it started to crank again and started the truck. DIC said something about my security system so I cleared it and then a light came on, on the dash with a car and lock icon, that light stayed on for the 17 mile trip home. Shut the truck off when I got home and restarted it and light has been off since.
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