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  1. Hey Everyone- I have a 2022 AT4 (5700mi) and its it has a shudder/hesitation during steady and/or light throttle acceleration between 25 and 70 MPH. Anyone else experiencing this or has and got it "fixed". Reproduced it for a ride along with the dealer, but need to figure out a plan or approach to fix this. They have mentioned maybe a fuel injector, maybe a new transmission.... Thoughts? Recommendations? Also, what site does everyone use to search for TSB's?
  2. It's never too early to start talking about the process of shopping around for a dealer, pricing, the ordering process, deposits, and production delivery times. Although we're still months away from orders being accepted, this thread is meant to be a place where everyone can check in and share their experiences as they go through the process. I'm also going to document as many important dates in this initial post as I can. I'll attempt to keep everyone up to date on start of production, any ordering limitations, and when the ordering system will go live. NEW UPDATES AS OF: April 25th, 2018 T1XX- 2019 Chevrolet Silverado and 2019 GMC Sierra - Important Ordering / Production Dates Pre-Production: NOW - Captured Test Fleet Production Confirmed as of March 31st. Fleet Order Entry Avaliable On Crew Cab: 4/26/18 Double Cab: 6/21/18 Regular Cab: TBD Retail Initial Consensus Month Crew Cab: May 1st Double Cab: August 1st Regular Cab: TBD Initial Dealer Order Submission Process (DOSP) Crew Cab: 5/17/18 Double Cab: 8/16/18 Regular Cab: TBD Production Start Up For Dealer Delivery Crew Cab: Quarter 3 - July/August/September Double Cab: Quarter 4 - October November December Regular Cab: TBD 2019 Chevrolet Silverado Start Up Schedule 2019 GMC Sierra Start Up Schedule This post will be updated whenever new information becomes available. Please contact me if you can help clarify any of these dates.
  3. I recently purchased the 1988 GMC Sierra k1500 350 four-wheel drive extended cab long bed with 155.5 wheel span, I'm trying to find the engine transmission and transfer case codes to no luck the transmission gear shift says L123, can anyone help me as to figure out what I have
  4. Okay guys I bought this truck from a dealership in September. It was used and I got a 30 Day warranty. After the 30 day period, this is what’s happening. I got in my truck and noticed a rough idle. My truck would shake and out of no where the check engine light starts flashing and my traction control light comes on. I took it to my buddies and we got a P0308 Misfire Detected Cylinder 8. So I did some research.. I also had a code which was P219B. Air/fuel mixture ratio. I changed the spark plugs.. didn’t work. I moved coil packs.. the misfire didn’t move. So we watched Live data on the scanner and injector 7 was acting up. So we replaced all the injectors on that side and this truck is still missing.. I’ve ran seafoam through it and cleaned the throttle body and MAS. My buddy things I have a valve issue or something wrong with the cylinder… there is no AFM deleted or anything of that sort. The truck has worked flawlessly until now. 135,000 miles on it. The rocker arms all looked great. please someone give me something to try. I just want my truck fixed lol. posting a link below of what it’s doing…
  5. Looking for some advise on what to try next to fix an unknown issue with my 2015 Sierra. 190k Miles L83. New transmission at 140k. A couple months ago I had a studder while the engine was put underload at low RPM in high gears. Mostly only noticeable with highway driving. Feels like the ignition kicks out for a split second truck jerks hard then I have to let out of it and downshift to high RPM where engine is not under as much load. The issue has been slowly getting worse and happening at less and less load. I can hear an audible breakup coming from the engine bay and exhaust notes. I started small and replaced plugs and wires, ran a can of seafoam through a 1/4 of a tank, ran seafoam in oil for 30 minutes at idle, then did an oil change with a quart of marvel and ran that for another 30 in hopes to clear a possible stuck DOD lifter. All with no changes. I reached out to a GM tech who told me its likely a stuck DOD lifter so I went ahead and replaced all the lifters and cleaned up in carbon on the injectors while I was in there. Still not changes. I am thinking the only logical next step is to replace the coils because it sounds like a ignition issue. But before I go throwing more money at this I would like to see if anyone has any other input. Thanks in advance!
  6. Zane Merva Executive Editor / Publisher, GM-Trucks.com April 12th, 2019 A few months ago we started to notice something on our 2019 Silverado that no owner of a brand new vehicle wants to see. Rust. Specifically on our rear bumper, just around the plastic step. It wasn't huge and didn't spread very far from the edge... but we couldn't stop noticing it. There was no excuse for rust on a 8 month old vehicle with less than 10,000 miles. The photo above shows the minimal but noticeable rust patch. It was even happening on both sides and in the same place. The issue seemed odd. Unfortunately, we've just been too busy to bring it by to our local dealership for them to look at. Lucky for us, our procrastination has paid off, because in the time between us first noticing the problem and getting off our lazy asses to drive to our dealer, GM has released a TSB about this very issue. It appears that on most of the early trucks, production of the bumper was completed incorrectly. The steel assemblies should be bent into shape then chrome plated. But that didn't happen in a small part of the early bumpers. The supplier bent the area around the side step after the bumper was chromed. The new folds in the steel damaged the chrome, cracking it and making the truck susceptible to rusting. What's the fix? If your bumper is rusting already, Chevy and GMC will replace it. If it has not yet started to rust, they will apply an automotive grade wax/sealant to prevent rust in the future. If you're unsure if your 2019 has this issue we suggest doing the following: 1. Give your truck a bath for heavens sake! 2. Clean the rear bumper step area with a hose or pressure washer. Front and back! We find lots of dirt collects behind our step in the bumper assembly. 3. Inspect around the foot step area and behind the foot step area. We found rust in both areas! 4. If in doubt, wait for it to rust and kindly ask for a new rear bumper. Our dealership, Banks Chevrolet in Concord, NH has been great getting our rust issue fixed. Our service adviser Justin has kept us in the loop during the repair and gave us a loaner Silverado LT while they have our truck. He even made sure any other outstanding service updates are also applied to our LTZ while it was in the shop. As it turned out, there were six open issues that needed addressed. Here's the official Service Update you can print out and bring to your dealer when you take your Silverado or Sierra in for service.
  7. Vehicle Details 2023 GMC Sierra Denali with a LZ0 3.0L Duramax Diesel. It has 7,300 miles in total. Issue DEF Level indicator not reporting proper fluid level. At startup, with DEF tank full, the center dash display shows “DEF Range 200 mi”. If the level drops by one gallon below full, the display shows “DEF Level Empty” and you can not use any of the other center dash displays. It locks the display and only shows “DEF Level Empty”. Appointment With Dealer After arriving for my appointment and explaining the above for the second time, 1 hour and 20 minutes, they said I was all set. They didn’t perform SB # 22-NA-150. They reset the DEF system and cleared its data. This seems to have corrected the issue, but I’m not confident that this is a long-term solution. The DEF level indicator still is reading less than full when the tank is, like it will show no higher than ¾ full. Anyone else having this issue? Any long term fix?
  8. Zane Merva Executive Editor / Publisher, GM-Trucks.com April 26th, 2019 Our friend Tim Esterdahl from Pickup Truck and SUV Talk got an awesome chance to tour the Ft Wayne Assembly Plant. That's one of the two plants that produce the 2019 Chevy Silverado and GMC Sierra. Tim's tour was narrated by GM's Executive Chief Engineer Tim Herrick. Sit back and enjoy this look inside the manufacturing of the all new Silverado and Sierra. And if you like what you see, subscribe to Tim's YouTube Channel.
  9. Zane Merva Executive Editor / Publisher, GM-Trucks.com March 22nd, 2019 The all new Chevy Suburban & Tahoe along with the all new GMC Yukon have been caught testing on public roads once again. We've licensed these images so we can show you the very first look at production lighting for these future 2020 model year vehicles. The last time we saw pre-production models of GM's full-size SUVs was last fall when the 2020 Tahoe and Yukon were caught on film for the first time. This time, the trucks look more complete and almost ready for action. Here's what our spy photographer has to say about the 2020 Suburban, Tahoe and Yukon: And here are the images:
  10. Hi everyone, first time posting, but long time reader. I usually try to avoid posting when I can, and just browse the threads and read about related problems and figure it out from there. Even though I've found many threads that are similar to the problem Im having, I still can't narrow it down to my next step. so if anyone can help, it would be greatly appreciated. Ok so, BAD oil leak problem with my friends 2005 GMC Sierra 1500. It's had this leak for a while, but it's gotten to the point now where it's starting to leave puddles. I power washed the entire area, and I actually got it pretty clean. Today when I looked again to see if I could trace the source, I had a much clearer picture of where the leaks are actually coming from. From what I've read it seems as though it could be the valve cover gasket, the crankshaft sensor, the rear main seal, or even the oil pan gasket. My problem is that to me, it looks like it's coming from almost all these places. I looked inside the bell housing and I don't see it looking completely soaked in oil. It does however, look like the leak is mainly coming from in front of the bell housing behind the engine, in between the two. I'll attach some pictures. These would be from overnight after I power washed it, so the oil hasn't blown anywhere from being driven or anything. Thanks so much to anyone who's got any ideas!
  11. Engine swapping a 2011 Gmc Sierra 1500 Crew cab 4wd engine into a 2006 Chevrolet Silverado 2500HD 1LT I need to know if this is possible, and what would be required to do so. Please tell me any information you know about this if possible or if not. I am trying to a put the 2011 gmc sierra 1500 engine into the 2006 chevy 2500 hd. I am trying to figure what needs to be done to do the switch, Is it possible to just drop it in and use a computer or do i need to retune something. I just need to know what needs to be done, tools needed, and if its even worthwhile. Vin numbers 2006 - 1GCHK23U66F166410 2011 - 3GTP2VE33BG225875
  12. Thom Cannell Contributor, GM-Trucks.com February 26th, 2019 General Motors had no news in Chicago, but delivered crowd-pleasing displays from Chevrolet and GMC, as well as Cadillac and their crossovers and SUVs. Of interest to truck enthusiasts were Heavy Duty Chassis Cabs from Ram, facelifts and equipment improvements from Toyota, face-lifts for some Nissan CUVs, a new Range Rover Evoke and more. The Chicago show is immensely different from Detroit, and that is a pun. With 2.3 million square feet of display space, the result is wide-spread (and often poorly lit) displays, indoor off-roading tracks, and worn boot-leather. These are the highlights. Alphabetically, Chevrolet brought its cars, well; they must have been there somewhere, and its new Heavy Duty Silverados, which were abundant in every powertrain and trim. And they brought the Lego Silverado, which is amazing in detail and execution. GMC “stood tall” with its Heavy Duty Sierra walk-under display and great lineup. Cadillac replaced their militaristic all-new XT6 with a gray one; it was better. They do have emotional colors available? Chevrolet Chevrolet spanned much of the North Hall, filling it primarily with trucks, crossovers like the fiercely red Blazer to lead your eyeballs into the display and nearby SUVs, but the focus was on Super Duty. Silverado had pride of position, though the new Traverse was mentioned, as well. From fifty-feet, you’re not convinced this Lego truck isn’t a real Silverado Z71. Even closer, it still fools the eye. Among the Silverados on display was this High Country. The Z71 Heavy Duty proved popular to the dealer, potential buyer, and social media crowd. Green is nice, Red is better, and note the difference in wheels and running boards per model. This is a great juxtaposition, the new Silverado Heavy Duty and its upgraded diesel engine. A perfect pair. We again saw the snow plow in Chicago, this time close enough to crawl beneath for a photo of the no-cutting-required blade attachment system. A pair of close-ups, first the dedicated, and covered, block heater that’s available and a better representation of the two bed steps designed for easy steel-toe boot access. At first glance, in Detroit, the new Blazer didn’t move our emotional needle the way we hoped. Much better in Chicago, with better lighting and blazing red color. It surely fills a needed niche in Chevrolet crossovers; it’s based on a global platform that carries Cadillac’s XT5. GMC GMC brought no new product to Chicago, only a clean, bright and entertaining display. Of note, their walk-under Sierra and the tracked Aspen special we mentioned as debuting in Detroit. Everyone Else Trucks, regardless their size, battle on GVWR, tow ratings, tire size, infotainment screen size (and bigger is always better), and now tailgates. Ram has a split gate that opens larger-left, then right, or folds. Ram offers a pullout entry step for easy entry, signature Ram box, and collapsible internal storage barrier. Ram’s big news—excuse the pun—was its 2019 Ram Chassis Cab; they brought several upfitter modified models as demonstrations, including a luxury fifth-wheel version. With so many ultra-lux 1500s, 2500s and 3500s, why there haven’t been more full-on interiors aimed at horse owners and racecar haulers, is retrospectively a mystery. Ram now offers its most modern interior to Class 3/4/5 upfitters. The chassis is 97-percent High Strength Steel, the diesel engine is an up-rated Cummins 6.7-liter knocking out 800 lb.-ft. of torque and mated to an 8-speed transmission. Not to be left out, Jeep brought a Rubicon version of the new Gladiator. Looks pretty rad to us. You? Land Rover’s latest small SUV/crossover Evoque is externally similar, though the platform is all-new and a bit longer with improved cargo space. Off road technology, which the brand is known for, is improved and the 246-hp Ingenium engine is now mated to a 48-Volt mild hybrid power assist to make 296 eco-friendly horsepower. Toyota debuted TRD Pro upgrades to its Tacoma, RAV4 and Sequoia. RAV4 has barely arrived in dealer showrooms, yet received welcome off road chops thanks to a dedicated suspension, all-terrain tires, all wheel drive, and standard torque vectoring for this RAV4 TRD Off-Road model. Tacoma, the perennial best-selling mid-sized pickup in North America, adds power-adjustable seats in most grades and has improved infotainment systems with 8-inch touchscreens that are smart phone savvy. Performance and glitter items like new grille and wheel designs, sequential LED headlights for the Tacoma TRD Pro model are balanced by new exterior cameras that deliver surrounding terrain views for improved off road safety. Sequoia TRD Pro now offers TRD-tuned Fox Racing off road dampers, plus other greasy-side items and an upgraded leather seat interior. The Land Cruiser Heritage Edition, a USA-specific version, goes the opposite way, shedding its chrome, third-row seats and running boards in favor of bronzed BBS wheels and a clean, subtly badged exterior. Without fanfare, Toyota put what may be future crossover product, the TJ Cruiser, on display to gauge reaction. Feel free to let them know what you think. Ford introduced its Super Duty trucks the week before GM’s similar launch. Their new Super Duty features three engines, the venerable 6.2-liter gas engine, now joined by an all-new 7.3-liter V-8 and third-generation 6.7-liter Power Stroke diesel. The newer motors are paired with a Ford-designed and built 10-speed automatic with optional PTO. Features include a new high-flow grille, Pro Trailer Backup Assist, LED headlamps, and improved trailer tow and payload capacity. Nissan’s 2020 Rogue Sport, not available for several months, offers new grille, refreshed exterior styling, and adds high-level safety features: Nissan ProPILOT and Nissan Safety Shield. Together, that provides owners with automatic emergency braking (AEB) with pedestrian detection, rear AEB, lane departure and rear cross traffic alert, radar-based smart cruise control and high beam assist. ProPILOT tech ““is a single-lane “hands-on” driving assistance technology that eases driver workload by reducing the amount of driver acceleration, steering and braking input under certain driving conditions, such as single-lane highway driving,” or semi-autonomy”, the company says. The Nissan Pathfinder Rock Creek Edition adds 18-inch wheels and some interesting, and functional cosmetics like black over-fenders, black-mesh grille and black roof rails, door handles and exterior mirrors. Inside they’ve added two-tone seating with contrast stitching; functionality includes a Best-In-Class 6,000-pound tow rating.
  13. Hello, I would like some help with my GMC Sierra 1500 2017. Recently, my vehicle has been displaying several codes: - U1510 K9 body control module lost communication with B67 ultrasonic intrusion sensor - P228C - P050D - P0089 someone help me?
  14. I have done a lot of research in preparation for this mod, and there are not any how to guides on this so I figured I would make one! First things first is the parts list. Below is what is required for this mod. Window (includes regulator): 84819603 GM list is $735. I found mine new on Facebook Marketplace for $150 so do some shopping around or they can be found used on car-part.com for much less but make sure it includes the regulator. Motor and mount assembly (they are sold together): 23490454 GM List is $89.13. Perhaps can be found used cheaper but not a bad price from GM. I got mine from Ebay. Overhead Console with switch: I recommend finding this used because often junkyards leave the harness intact which you will need. I got mine on Ebay. Side benefit the Homelink is plug and play so if your truck didn't come with it like mine you now have it. Rear Window Lower Garnish Molding (Main longer piece): 22817432 Right Rear Window Garnish Molding: 22817430 *These are not required if you are handy with a Dremel Next is the harness and fuse tap I used. This is an aftermarket harness that I modified to extend the length I needed. Universal Power Window Harness: https://amzn.to/3Kz1qyK Micro Fuse Tap: https://amzn.to/47ls08b Once you have gathered your parts contact a local shop to install your window. Next you will need to figure out your trim. There are 2 ways to do this. You can buy the trim from GM or just trim a little off your factory ones. This is the route I took. Just line it up where is should fit, put some painters tape on mark it and with a carful hand just trim it and it looks just like stock. Next you’ll need to mount your motor and regulator assembly. Below are some pics I found online of a factory truck. Once that is all mounted up its time for wiring. Using the Universal Harness and factory switch is fairly easy. Here is a diagram. The GM switch is pinned out just like the aftermarket harness I linked. The factory switch and pigtail should come with the overhead panel just cut off the connector and splice it in. I routed the grounds together and self-tapped them into the truck by the fuse box. The power is ran to the fuse box (with an inline fuse) and tapped into key on power. Depending on your truck you may or may not have some of the options used to tap into. Below is a link to a great website you can poke around and figure out what fuse works best for your truck. https://www.startmycar.com/us/chevrolet/silverado-1500/info/fusebox Finally run 2 wires back to the motor. I ran mine through the headline and down the passenger rear trim. Once everything is connected you should have a working power rear window! [img]https://i.imgur.com/6dQKvXy.mp4[/img]
  15. Picked her up in June 2023
  16. Hey fellas just wondering if anyone knows what this hanging plug is? Not sure if it’s for a sensor or not I just noticed it now..this is on a 2015 GMC Sierra 1500 All Terrain Thanks! IMG_0890.dng
  17. IMG_2627.MOV I have a Sierra 1500 with the 6.2L (107k miles) and 10-speed transmission. When I was driving the motor shut off and when I tried to restart the engine the starter would just crank but no fire. I towed it to a mechanic I’ve been seeing for a while. He hasn’t been able to get around to diagnosing the truck but he sent me a video of him trying to start it. The noises are very concerning; I first thought it was due to a failed fuel pump module but now I’m thinking it’s something a lot more expensive anybody have any ideas as to what this problem could be?
  18. I have a 2004 Sierra 4.3l v6 that has started to run pretty rough on idle like it wants to bog out, I noticed my exhaust tips black (don't know if that matters). I checked the codes and got the P0300 code random misfire. I have replaced the spark plugs and the spark plug wires as well as the ignition coil, distributor and the distributor cap. That did not seem to solve the problem and I've ran out of ideas. Anyone might have some insight on what it could be that is causing this P0300 code?
  19. Has anyone had a rear compressor issue with a new Yukon XL Denali? My wife and I bought the vehicle at the beginning of October 2018 and within a month the rear compressor began running excessively. We took it into the dealership with bought it from and the service rep heard the noise but was unable to reproduce it later in the day with the technician so they sent us away with the vehicle. The noise became more and more regular so we took it to a dealership near our house and they heard it and acknowledged the problem, this lead them to replacing the rear compressor. The change of the rear compressor didn't do the trick and the excessive running persisted, this is where the frustration really set in. The service technicians were going to run diagnostics and service the vehicle after we brought it in MLK Day. The service department manager interrupted the process and essentially tried to bully my wife into accepting the fact that this is normal behavior for a GMC Denali line vehicle. She left the dealership in tears. I called the service manager in disagreement with 1) his treatment of my wife and 2) disputing the fact this is normal. His response was the discharge the video with a bogus report emphasize the vehicle was in intended working condition. Now the Denali is sitting at another dealership while they try to replicate the issue. It occurs 30-40% of the trips we take in the vehicle and the rear compressor will run anywhere from a few seconds to 20 minutes. Has anyone else had this issue and found a resolution? I'm to the point I'm almost willing to just sell the vehicle back for a loss to be rid of it.
  20. Ok, something just started happening with our 2016 GMC 2500HD Denali 4x4 with the diesel. The remote door lock and unlock won't work every time from either of our fobs. We bought this truck last August so I can't imagine the batteries in both of our fobs have died at the exact same time and only 7 months in. My fob gets used the most with my wife's fob barely getting used at all. Anyone else experience/experiencing this? And, what did you do to remedy it? I guess we can try replacing batteries first, but batteries only lasting 7 months in a fob? And both failing at the same time, especially given one gets frequent use and one barely gets any use. We know it's not a fuse because it does work from time to time.
  21. I have a 2015 GMC 3500 that won't start without spraying ether. It will turn over, but unless we spray ether it won't start completely. Took it to Chevy, and they said they fixed it by fixing the fuel switch, and it continues. Plugged it in and no codes show up. Truck has 160,000 on it... HELP! ASAP. TIA.
  22. Similar to the 18" post, I want to see a thread with a 100% stock setup and what size tires you put on for 20" stock wheels only. This thread is not for leveling kits or aftermarket wheels. Post up some pictures! Let us know what size your tires are and what kind. I'm really only interested in doing very minor trimming if needed. My last truck I just had to zip tie the liner a little further back. Thanks! My current stock AT4
  23. I recently bought a used 2016 Sierra Denali 5.3L 4x4 in March with 48k miles. Truck has been great until yesterday (now 52k miles) when I ease into the gas it shudders and shakes like crazy until i punch it. The tach is bouncing up and down and it doesn't matter if it's in v8 or v4. It almost feels like it's a misfire but it's weird that it only does it when I'm easing into the throttle or going uphill. The truck has the 8 speed transmission. Has anyone else ran into something like this and would the manufacturer warranty cover the fix for this?
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