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Found 302 results

  1. John Goreham Contributing Writer, GM-Trucks.com 9-11-2019 General Motors has announced that NHTSA is mandating a safety recall for the following vehicles: 2014-2018 Chevrolet Silverado and GMC Sierra Pickups (1500 / 2500 / 3500) 2015-2018 Chevrolet Suburban, Tahoe, GMC Yukon vehicles 2015-2017 Cadillac Escalade NHTSA reports that the amount of vacuum created by the vacuum pump may decrease over time. The group says that as the vacuum level drops, the brake assist decreases, and that this increasing braking effort, extending the distance required to stop the vehicle, thereby increasing the risk of a crash. This new recall covers 3.4 million vehicles. The Problem: The brake pump uses engine oil to lubricate itself. If the pump becomes clogged with engine oil sludge the units ability to create vaccum is diminished over time. As a result, braking force and ability also drops. The issue is usually accompanied by a "Service Brake Assist" warning message in the dash. The Fix: GM will reprogram the computer that controls the secondary brake assist pump. The secondary pump will now activate at lower speeds and different situations quicker to compensate for any lost output from the main pump. Since the pumps are not failing, GM has decided not to replace them. GM's number for this recall is N192268490. In compliance with federal law, GM will notify owners, typically by snail mail. GM says that its dealers will reprogram the Electronic Brake Control Module. However, GM has not yet provided a notification schedule. Owners may contact Chevrolet customer service at 1-800-630-2438, Cadillac customer service at 1-800-458-8006 or GMC customer service at 1-800-462-8782. If you own one of these vehicles and wish to check to see if your vehicle is included (or not) you can do so at this link immediately. As with every safety recall, customers will not be charged by GM for the needed repairs or modifications. NHTSA's public information on this issue indicates that many accidents have been reported to NHTSA including some with injuries. This recall is the result of a NHTSA investigation that lasted nearly a year. In its investigation report, NHTSA noted the following details about the problem:
  2. First post here and I wasn't quite sure where to post. This isn't really troubleshooting because we know what is wrong, I'm mainly wanting to know if there are large scale issues regarding this and how do we get in touch with GMC about it as our mechanic isn't much help at this point other than charging $1100 to fix it. We bought a used 2015 GMC Yukon last year with 20k miles on it. A month ago, the Side Blind Zone alert on the side mirrors came on and have stayed on permanently, even when the car is turned off. Because of that, it drains our battery when the car is parked longer than 2-3 days. I took it into the shop a couple of days ago and we find out that the box that houses the sensors, in the right rear quarter panel, had become detached and was dangling close to the exhaust pipe. Because of this, it totally melted the box housing the sensors. The mechanic tells us that the sensor box is only glued in and can become detached easily. This is costing us $1100 to fix because the sensor is over $300, and then labor for the past 2 days to get it back in place. Is there a thread in here from others who have had this issue? Is this a wide spread issue? Should GMC pay to fix this and if so, what are my next steps? Thanks!
  3. Might have a ridiculous question but I cant see the issue in theory so I am consulting the experts. I have a 2015 2500 HD 6.0 4x4. I recently had long tubes installed. First finding long tubes for this application is insane. I could not specifically find anything that guaranteed fitment for this year. I ended up with speed engineering stainless that was made for the 6.0 up to 2013 according to them it should carry over in later years which is true given the L96 has changed little to none. I had zero fitment issue with the passenger side but the left was awful...... hit the motor mount, frame, and drive shaft. I had the shop modify the header to fit......being honest he did exactly that and I'm impressed but I believe the header is leaking like nobody's buisness due to the 8 different cuts and bends he made. and makes an awful sound I do not feel like going through hell and back or spend the money on another long tube header for that side to run into the same issue...... so what if I ran a shorty 1 7/8 stainless on the driver side and a 1 7/8 long tube on the passenger side? It's off the wall but why not? If the true duals x and I have a custom tune in theory it should not be an issue right?
  4. Hey Everyone, I’ve been looking at this forum for a long time but I’m a new member. I have a 2015 GMC All-Terrain that I’m wanting to level. I’ve been trying to decide between the ready lift 2.25” with the 2” rear block or Rough Country 2.5” with the 2” rear block. I want to run 275/65r20 tires on the stock wheels. I was also considering buying a set of Hellwig helper springs, I pull a trailer a few times a month and don’t want much to any squat. So I guess my questions are: 1. Has anyone done either of those kits with that size of tire? (Please share a picture) 2. Would it be better to do an Add-A-Leaf in place of the 2” block and Hellwigs? I have looked through all the leveling kit post and haven’t really found what I was looking for yet. Thanks
  5. hey all, I have a 2015 chev Silverado 1500 with 56k on it. yesterday (5-22-2020). I was sitting in line in drive and started hearing a loud squeal. thought it was the car in front me until I shifted into park and took my foot off the break and it went away! car moved up so I shifted back into drive and moved forward and it did it again just sitting still until I put it back into park. having lots of problems trying to diagnose it. drove it again today (5-23-2020) and it did it again but not as loud. would could this be? checked the tranny fluid and it was in the normal range. any help is great as I travel for work. thanks
  6. Hi, I just joined the forum and tried to search for information about my specific issue and came up empty, so I'm hoping someone may have info I could look into on this subject. I bought my 2015 Suburban LTZ (5.3L 2wd) about 6 months ago (used, with 50,000 miles on it... I know ;) ). It now has about 62,000. I purchased an extended "Bumper to bumper" warranty along with it. A few weeks ago my front end started bouncing when I would hit bumps or drive out of parking lots. Anytime I go over a bump, it oscillates over and over. I've experienced this before with older vehicles. Its clearly the shocks that are bad. When the vehicle is stopped, if I push down on the hood and let go, it goes up and down several times before stopping. Instead of the standard, down, up, middle, - that would be expected from good shocks. I took it to my local dealership where I purchased it. After a week of waiting for diagnosis, and approval from the warranty company... They call me to say the warranty company says they wont cover "shocks" only "struts". From the looks of things, these are coil over shocks. I get that. However, the GM Part number description says "Strut". So which is it?! The warranty doesn't cover parts designed to wear out, I understand that. However, they state they will cover Struts. Anyway, they are telling me, my shocks need replacement and because of the LTZ Magnetic Ride, it is an $1,800 job ...just the fronts! at 60,000 miles! I'm not sure I want to replace them again at 120k miles if they are that prone to failure, with a cost like that tied to it. It sounds like I'm stuck with what the warranty company wants to call "Shocks" so I'm on to just trying to figure out how to get a decent ride back so I don't have a potentially dangerous situation on my hands. My options, as I figure, are as follows: a.) Pay the $1800 and get it fixed and continue with the arguably stiff ride this 'improved suspension' system gives. b.) Make some noise with the warranty company, waste some time, and probably wind up needing to pay out of pocket anyway. c.) Find a set of good after market shocks, and put them in. Then find out if the Magnetic ride system can be disabled (or if it even needs to be). I don't want to have a dash light on or any other issues if I just swap out the shocks on the front only (for now). I would even do a leveling kit if it came with new shocks. But I just don't want any suprizes by putting shocks on then finding out the system can't be bypassed or something. Does anyone have any experience removing the Magnetic Ride shocks and replacing them with Bilstein shocks or some other aftermarket brand? I look forward to any input anyone can give. I'm leaning hard on option c.) just because I've got a real sour taste in my mouth about this relatively new truck, that I love, giving me such huge expenditure so early on, especially on a component that is the subject of such controversy. I hardly see this magnetic ride as an improvement in ride quality, or lifespan. So I'm not sure where the improvement is.
  7. On Sunday March 8th I was driving my Sierra home from my parents-in law. I pulled out from a stop sign and was just getting up to speed when there was a loud bang followed by loss of power, Loud ticking noise, vibrations and a sulfur smell coming from the exhaust. I knew this was lifters instantly as it Happened to me in August of 2018, a short 11,000 miles ago. So, I took it in to my dealer who ran diagnostics and gave me the news That I would need lifters replaced yet again. Unfortunately, my power train warranty ran out December of 2019, so they told me I would owe a balance of $2900+ tax. Of course I was very upset with this news as I would have imagined the dealer would talk to GM and get this issue sorted out.. I mean it was only a few months over a year and less than 11,000 miles since they replacedall of the lifters and the cam shaft. I contacted GM myself and over the course of the last week have been working with the dealer and trying to talk to someone at GM who could help. Finally I reached a “senior analyst” who is apparently the top tier of customer assistance and she told me there was absolutely nothing they can do and I am responsible for the entire bill. I insisted that GM must know about the issues this engine has By now and should acknowledge and help their clients, but she offered no help. How can I trust this engine again? I have read many posts people have put on this forum alone with this issue of failing lifters. How can anyone be expected to pay this much for an issue that is derived likely from GMs design of the afm system? Especially after we pay $50,000+ for the truck to begin with! I do not pretend to be an Mechanical or financial expert, but I feel I have been severely wronged in this situation. I have no choice but to eat this cost and sell the truck before the lifters have a chance to fail again. I would suggest anyone doing research considering buying one of these trucks (I believe Sierra and Silverado 14-18 at least) that has the active fuel management system to rethink it. I would also go out on a limb and suggest my friends with 14-15 year Silverado and Sierras (with expired powertrain warranty’s) to consider selling them before the lifters fail on yours and you are stuck with a $3000-$5000 bill. Good luck all.
  8. We are upgrading to a 2020 GMC AT4 HD 3500 and should be delivered soon. Asking $47,000 Follow this link for additional photos Facebook Marketplace ad So...Look no further for your next tow vehicle! Tow in style, tow with confidence!! This 2015 GMC Denali HD 2500 in Black Onyx has all the bells and whistles and more! She has only 52500 miles on her! This truck has been upgraded with BlueOx Gooseneck Hitch, a Second 7 Way connector in bed to secure your Gooseneck or Fifth-Wheel camper trailer wiring harness to help you tow in comfort and with confidence. It has also been upgraded with a Pop-A-Lock remote lock actuator for tailgate (unlocks tailgate when you unlock your truck). To help with those horrible GM headlights, this Denali has been upgraded with GTR Lighting Gen 5 HID 5000K headlights and Morimoto XB LED foglights...I cannot begin to tell you how much of a difference this has made! For just that little bit of oomph or MPG, this GMC has also been upgraded with the Banks Ram Air intake and Banks exhaust with chrome tip. Upgraded Shocks to BILSTEIN 5100 series shocks at 43500 miles. A Banks AutoMind programmer, is available and negotiable with purchase of this 2015 GMC Denali HD.
  9. I purchased a brand new Suburban in 2015 from Sawgrass Chevrolet in November 2015. Over the last 6 months my husband and I noticed the paint on the hood of the vehicle is faded and has noticiable swirls. I had it evaluated by a auto body shop and they confirmed the paint is defective and there is no clear coat. I've also been told by the dealership that this is a very common issue they have seen on the hood/ over the engine. Yet, there is nothing they can do, I must contact GM. How is it possible that this is a know issue and there is no resolution. My car is just over four years old! My 10 year old Ford Expedition's paint looked close to brand new compared to this!!! Does anyone have any advice or recommendations? CLASS Action lawsuit?????
  10. Do the 2019 GM Step Assists fit the 2014-2018 model years? Trying to figure out if the 2019 Sport Steps will fit my 2016 Silverado. Thanks.
  11. Having a 4wd issue not sure whats goin on. Truck seems to not be goin into 4wd can hear the actuator trying. The selector knob shows its in an shifting in an out then get a information message that 4wd is off. An no code are showing. Havent been able to find anyone else with this issue. Tried pulling the 4wd trec fuse an battery.
  12. Hello, I was thinking of purchasing a 2016 Yukon Denali, but after reading a few forums on here it seems like there have been a few issues with the 2015 model ( buffering noise and vibration). Have these problems been sorted out by GM in the 2016 model? If not is the problem big enough to avoid purchasing a Yukon Denali? Thanks
  13. I am having issues with my brand new 2015 GMC Yukon Denali. I was so excited to get this new car. It had a leak in the back right rear window from the start. They had to replace the entire headliner in the interior. Now I've got a shiver when in idle both in gear and out of gear. It feels like the car needs more gas. I've taken it into the shop 3 times now. The service department, after listening to my complaint and acknowledging the shiver, ultimately states that the car is "operating as designed". I've test driven a 6.2 liter Denali that does not have this issue. They've stone-walled me at GM, essentially saying they can't fix a problem that doesn't exist. Has anyone else had this issue? You would think that a brand new car wouldn't have this issue, and that they could do something to fix a rough idle. I'm beyond frustrated. I'd love to hear if anyone has the same problem.
  14. Hi! In April, my Yukon was throwing codes P0172 P0175. Local GMC dealer in Louisiana "fixed", by replacing some sensor. Traveled to PA, codes came back on. Local GMC dealer fixed by replacing BCM, body control module in June. Now my check engine light is back on! Power train Warranty ran out 2-3 weeks ago. Also had extended warranty, which also ran out at 5 years, which was Sept. Code onstar says its throwing now is P0430, all of the codes from I can find are related to exhaust system. My question is are these 3 codes related??? Could this be something they will have to fix under warranty, given it's related and has been worked on several times? If not, what does this mean? Catalytic converter bad? Help! My husband is being laid off in the next week. So, obviously finances are tight. Yes, obviously itll be fixed regardless, just trying to plan and cut back elsewhere if needed. This has been a great vehicle! As luck has it, trouble starts when warranty runs out. Really wanting to trade, but waiting on new body Adding mileage if matters, 91K
  15. I drive a little less than 50 miles a day back and forth to work. My odometer was 80,0** yesterday now its showing 81,157. Really dont know what to do about it. Has anyone else had this problem? Really dont want to wake up to a million mile truck tomorrow.
  16. I bought a 2015 Silverado 1500 lt double cab 5.3L V8 4x4 with 12,000 miles on it a couple months ago. It now has just under 20k miles and when I went to check the oil there where metal shavings on the end of the dipstick. Concerningly big metal shavings. I brought it in to my local GM dealer and they told me that it's from the dipstick scraping on the dipstick tube. They didnt run any tests on it they just drained it and looked in the oil itself and didnt find any shavings (so they said). Which sounded a little shady to me so I started looking to see if anyone else had this problem and I found a few cases similar but not enough for me to come to a solid conclusion. The pickup runs great and I dont hear or feel any problems but any insight would be greatly appreciated. I thought about sending a sample to be tested myself but I dont know of any good company's near me that do it. Any recommendations on that would great too. Thanks
  17. Hello, does anyone have any info on which package truck I have? I know there is a Custom Sport edition but I think that is only for crew cabs it also is a different shade of white than what I have. There also is a Midnight edition for the all balck Silverados... I am just curious as to what my package is called because where I am located I havent seen a truck like mine since I have owned it the past 6 months or so. Thank you in advance!
  18. Hello, I am looking for recommendations or advice regarding the Flowmaser 40 series single out muffler. I am wanting to remove the adaptive valve on my 2015 V8. If I cut off the valve, replace the muffler, and leave the resonator, will I still get the Flowmaster sound? I wouldn't mind a deeper sound, but I don't want it to be too loud either. Just trying to find that happy-medium. The main reason is because I am getting the "chirp" or "squeak" from the adaptive valve. My AFM Disabler helped with the chirp when switching from V4 to V8, but I still hear it when I crank my truck. Any info or advice would be appreciated. Thanks! Ben
  19. 60656 miles. The truck completely shutdown while in motion. All electrical in the vehicle shuts off for 1 sec and restarts. I have taken the vehicle to the Chevrolet dealer and addressed all recalls and bulletins. This issue continues to happen every 3 days. I have called the manufacturer and discussed this potential life threatening issue and was told to take it back to the dealership. Does anyone know how to resolve my problems?
  20. My brakes are squealing, and have been for a while. I took my truck in and was told there is some uneven spots on the rotors but it doesnt affect function, it's just annoying. Well, I'm tired of it. I'm at 45k and its probably close enough. So as per my lurking, I think I want to go with the police package brakes. Anyone who has these, will they affect braking in the cold/snow/wet or while towing? I was looking at this thread below and someone linked a photo of the parts from rockauto. It shows a couple different parts for the front pads and rotors and rear pads and rotors- do I want bendix, raybestos, or acdelco when I have an option? Are the prices for the rotors per rotor (vs per pair)? This is the first time I've done brakes. Any tips? I have a 2015 Silverado ltz z71 4wd. Thanks!
  21. I sell, fabricate, deliver, install and train workers how to use my packaging lines. In 2015 selected 2500HD WT 6.0 as the platform to use as my office (Truck Camper) and and tow vehicle. It provided great HD service and economical (per mile basis). On a trip to OR noted a resonance with my thumb on the steering wheel, when engine load changed going over an overpass. At first I thought it was roadway groves, but the rhythmic vibration stopped when manually dropping into a lower gear, increasing to 3000 RPM's. Not willing to chance break down north of Mount Shasta, returned home, switch vehicles and headed north. Upon return the rebuild search began. Deep dived into transmission repair cave and almost selected a remanufacture unit from Certified Transmission but learned shops are under no obligation to use their products and there's limit participation on the left coast. Most shops refuse to install a third party transmission citing warranty issues. Finally settled on a local shop in West Sacramento that rebuilds your transmission to the level you want. As a bonafide cave dude wanting to understand the how transmissions work, why they fail and how to repair, called (late Friday) Pro-Built Transmission and spoke to Don the owner. I outlined in detail what the problem was, and through a series of questions from Don about the trucks' service history and how I use it, he was confident what the problem was. Arrived two hours late from my Monday 8 am appointment, Don pulled me through (no signage stating for insurance purposes you can see what we're doing to your ride gate) his shop showing various components, their failure points and although the 6L90 is a simple transmission pointed out common failure points. He showed various 6L90's requiring rebuild, some under 60K miles, and could not believe mine made it to 194K. I relayed after the first transmission filter change, started pulling 5.5 quarts out and replacing every other oil change, in other words, a poor man transmission flush. My reasoning was pay 25 dollars instead of $250 for a complete flush. Don smiled and said that explains it, noting above all else, fluid change saves transmissions. Satisfied Don wasn't a hack, dropped off the key and within an hour, after a test drive and noting data stored in in codes sent me this. I knew it was bad and knowing a bottle of shudder stop wasn't gonna fix this, authorized repair. With high mileage, I asked about universal joint replacement, Don relayed he had a shop that could replace joint, balance the driveshaft and check the center bearing. Also since transmission was removed, and although showing no signs of leakage, had him replace the rear oil seal as well. Don pulled the transmission and confirmed what he suspected, torque converter friction plate failure. The metal on metal grind produced fine grains that worked its way pass the bell hosing bearing and through the pump. Damage continued through the valve body and solenoid pack (TCM). Solenoids contaminated Note the metal grit in the screen on the right. What was unexpected was the metal grinds didn't make to the clutch packs. After 194K miles, 90% were still serviceable with some showing wear on the outer ring. What's interesting with GM is, instead of applying full pressure to the clutch plates, they control the amount of pressure applied. The black rubber ring on the piston drum engages the plate outer section. This accounted for the most wear on the clutch plate. Don showed how the replacement piston drum engages the full surface of the plate; provides a sharper shift and lowering the wear. THE FIX. Drive shaft showed the center bearing was bad and was along with universal joints replaced. Don sent the pump face (forgive if I don't name the parts correctly) to be machined smooth (8-9 thousandths). He switched solenoid rods from alloy to steel, and spoke about the OME cost. Chevy spends perhaps 50 cents on alloy rod where as three steel one cost him $80.00. He installed a new pump and higher valve pressure components. Here's a picture of some parts replaced in my 6L90. Don sent out the torque converter to another shop. They split it open and here's the condition. Don then explained his vendor replaces the back half (part the friction ring presses against) with a thicker (1/4 inch instead of the 1/8 inch) material machined from a billet. This handles heat better and prevents the converter material from warping. They also flash braze vane tabs to prevent movement (picture of open converter is not mine) If you get a good shop and can wait four days, one can retain the original unit and get upgraded parts. Note the remanufacturing industry is designed for a quick turnaround for transmission shops. They cite a higher level of expertise, however the reality is they created a process based on volume allowing a price point favorable to the transmission shops. Nothing wrong with that and note I wanted to retain my original transmission. Programming Invoice. Yes its high, but keep in mind two other shops were involved, addition work was completed and Don took time to educate me on the transmissions, AND its a tax write off. In the final analysis and under heavy duty conditions, if you have a 6L90 strapped to a 6.0 and do fluid changes, your transmission will survive to 150K miles. If I had a better understanding of transmissions when observing the gray paste material surrounding the pan magnet at the last transmission filter change, I could minimize cost with just a torque converter change. As for this repair, (most expensive during ownership) it cost me .0229 per mile. This and the top end rebuild posted earlier, gives a total cost of $5944.85, (.03 cents per mile) returning my truck to service, hopefully getting another 150k miles. Test drove my truck and report shifts are crisper with the only change being when going over overpasses, and sensing the torque change, rpm will drop 25-50 rpms and return on completing the elevation change. Next week I'll go up the Grapevine with a 4k pound truck camper and report how she does.
  22. I am having problems with my air conditioning again. My A/C is blowing warm air and this is the second time I have had this problem since buying my 2015 Sierra less than 6 months ago. A few months ago I had the exact same problem and my dealership diagnosed it as a leaking hose and all of the freon was gone. They had to order a new hose and it took a week for it to come in. They installed the new hose and added more freon and it has been fine for the past 3 months until today. This morning I noticed that the air coming out was warmer than normal even though I have the A/C set at 65 degrees. It was fine yesterday. I am going to monitor it and see if it gets worse and if so make an appointment to take it to the dealer again. Just wondering if anyone else has had to replace the hose or had a freon issue with their 2014 or 2015 Sierra / Silverado?
  23. So I was all settled on installing the Fabtech 6” basic lift then the 4wheelparts guy tells me Pro Comp is running a $500 rebate on the 6” coilover kit which is usually $2400, now $1900. The Fabtech kit w/ their stealth shocks and front spacers was $1600 something. Should I spring for the upgraded coils? Vast ride improvement? 85% on pavement driving occasional off road for hunting/fishing thanks
  24. I currently have the little 4” screen in my truck and was wondering if anyone has tried to go get an 8” screen and HMI out of a and junkyard truck and plug it up. Would that work? I dont feel like paying $1500 for something to still be stock
  25. I have a 2015 Silverado Crew Cab LTZ and I keep finding the passenger front seat belt being wet after it rains. I've also seen water dripping from the passenger side of the upper center console (pic attached). I've already had the OnStar antenna replaced but it's still happening. Has anyone see this? Any ideas?
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