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  1. 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.
  2. I'm interested in a quick read of the room. How does everyone feel about the news that GM is moving in the direction of an battery electric truck? Does the brand it's sold under influence if you'd be interested? Are you ready to buy one now or do you think we should wait it out? Thanks for your opinions!
  3. It's October 2019 and rumors are swirling around a potential General Motors Electric Pickup, code named "Project O" We just covered this news here: https://www.gm-trucks.com/your-first-electric-pickup-may-be-a-hummer/ We've created this forum as a place to discuss these future electric vehicles and the news around their development in the leadup to 2021.
  4. 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?
  5. My trucks going in for open heart surgery in a month. DOD delete, tsp stage 2 L83/5.3 cam in my L86/6.2. I eventually would love to put a blower on it. I drive the truck frequently and don’t want to do too big of a cam where I’ll have to change my torque converter. Will I get away with a L83 stage 3 cam with my stock converter or should I stick to the stage 2. Specs are 5.3L Stage 2 Camshaft w/ +32% Fuel Lobe: 218/226, 635", 113 LSA, 109 ICL All my mods will be intake, portable TB, (hopefully have my heads ported when it goes in for dod delete and cam) LT4 injectors, 1-7/8 long tube hears, off-road y-pipe. I’ll have a 3.5” electric cut out followed by stock exhaust for now. Trucks reverse level and blocks removed. 22x12 -51 285/35r22 no trimming or cutting
  6. Hello everyone, On my 2020 GMC Sierra 2500HD Denali I did a hood air induction vent swap for a chrome vent cover and while I was at it I added Led RGB lights inside the vent taking care not to restrict the air flow. Has anyone else done any chrome or Led RGB mods? If so lets see them please.
  7. New guy here with engine problems. All parts are stock. No modifications have been done to engine and engine management to our knowledge. With that said, here is what is going on. Truck is a 1996 GMC Sierra. Crew cab, long bed, C3500, non dually. Has 7.4 454 Vortec and 4l80e transmission. Driveline has 147,000 miles and engine has good compression. All cylinders read 120 to 140 PSI. What's going on is the engine refuses to run properly. First up is the MAF sensor. Had the engine light on the dash so I used our OBD2 scan reader on it. Got P0102 which is Mass Air Flow sensor low output. Replaced the sensor with a Bosch unit and cleared the code. Next engine start that same code came back. I checked all the wires and plugs that section of the harness goes through. It has a good run to the computer. No frays or breaks. I even reset all plugs thinking there might have been some resistance in the connectors. No dice. Code comes back every time I clear it. Any ideas? Next up is the really serious problem that prevents the engine from running properly when cold. Low fuel pressure. According to our gauge it only has 20 PSI max and leaks down as soon as the pump turns off. On the fuel system we have a new pump in tank, fresh filter, and new regulator. That was a pain to install as the top of the intake manifold had to come off. Still have the low pressure and leak down. We thought the injectors were leaky but the thing is lean at idle as we sprayed starting fluid in the intake tube and the idle evened out. When cold it doesn't want to idle at all but will even out at 650 to 750 RPM when warm. Any idea what is going on? We have no idea what type of pump is in the tank as the people who own the truck put it in before we were tasked with fixing it. Still have the stock one. We plan to pressure test it and if it can go up to at least 80 PSI we will just put it back in and see what happens. So, any ideas on what is going on? I can record videos if any of you want to see the engine and hear it running. If anyone can figure this out I would greatly appreciate it as this goes beyond my knowledge of fuel injection problems.
  8. Hello, I have a 99 GMC Sierra 1500 SLT Z 71 off-road package. There is a huge backstory to this truck that makes it very important to me. throughout the two years I’ve had it I’ve been upgrading and building it. every time I go to the parts store it seems like there is an issue with the Vin number and the parts they give me. Believe me I know the incompetence of most part stores . NAPA auto parts seems to be the only parts store that has knowledgeable older employees competent enough to do an actual Vin search with cross referencing. They were able to use the cast numbers on my rear differential to verify what I had already thought. The rear end is out of an 05 GMC Yukon XL. all of the work that I have done has always been a chore first because the 99 is a 2 Truck year. there is a old body style 99 and a new body style 99 while at Napa they let me actually look at their computer screen and I noticed when They enter I started looking at Vin number identification and cross-referencing with RPO codes. The Vin number States that its 5.3 L V8 The RPO code says it’s a 4.3 L on the fan shroud it says 5.3 L V8 I look at my chilltom book and it tells me to look at the motor identification placard Saying that it is at the base of the back of the block where the transmission bell housing mounts. With a picture showing exact location. there is no placard there. so I check the cast numbers on the rear of the block passenger side. This is the biggest thing I’m having problems with. I ran those numbers on four different websites. on two of those websites There was no match through the search I checked small block and big block cast numbers from 1978 till 2013. these numbers do not match to anything Chevy put out. everyone keeps telling me it’s a small block 5.3 but the numbers start with 1256 those starting numbers do appear in the big block section. so I looked through it and found two Big block motors with almost exact numbers but off by one or two . I was starting to think that this is looking like a chop shop ordeal. when replacing the transmission and transfer case I noticed the wiring harness was mostly zip tied and not connected to stock anchor points. also the truck has 386,000 miles on it. The body is beat to crap. But the motor is exceptionally strong with exceptional power. My brother has an 05 Silverado with the same fifth wheel tow package same Z 71 heavy suspension and 5.3 L it was very real well taken care of by an old man the only used it to tow his camper. His truck only had 90,000 miles and my sierra out performs his in every single way. it has much more torque much more get up and go. and can haul so much more. with little to no problem on any incline he keeps telling me he doesn’t think it’s a 53 because of the power of the motor and the mileage The fender skirts had been ripped off on the front causing old mud splatter all throughout the engine compartment. But the motor is surprisingly clean except for a few valve cover leaks. it’s so clean it almost looks out of place. The coil packs are not new but they have no mud splatter but the plug wires have mud all over them. I could go on for days with reasons why I think the motor has been swapped. because of not being able to verify block casting numbers. I cannot be sure of what parts to buy or know what known issues I’m dealing with. I have read that 99 to 03 has some issues with PCV valve and badly engineered driver-side valve cover. intake gasket failure. I and Cass tech heads that crack causing head gasket failures. as soon as the weather changed warm the symptoms of all of these issues came up immediately. I am no mechanic and this is my first NBS Chevy. I am very mechanically inclined but I don’t understand electronics computers and vacuum in these new trucks. if anyone can give me any information on The Block cast #12560392 with lettering NMP6GMPT. or give me any verifiable information on how I can decipher exactly what motor this is what heads those are. I would like to start with the service bulletin pertaining to changing the driver Side valve cover gasket with better baffle and integrated PCV valve. feel free to ask any pertinent information you need. I tried to be thorough sorry for the small buck Thank you and God bless
  9. 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
  10. 2017 GMC Sierra I want to fit 35s on my stock wheels and have the smallest lift i can do. I don’t want to do a whole lot of cutting maybe no cutting at all. What size lift or level can I do
  11. I ordered a GMC 2500 At4 6.6 liter gas engine on April 4th 2022. After I got the order number I found out how to get on gmcs website to check on production with the virtual assistant on 4/10. That day I found out my vehicle was already produced however it is now 4/20 and i still do not have a vin number so that my dealership can set up tracking. does anyone know how long it usually takes a finished truck to get its vin number??? accidently posted this on someone elses forum the first time sorry new member to this sorta thing
  12. Would like to know if I can turn off the seat belt chime. I wear the belt on the highway but around job sites It's a pain.
  13. Sharing experience for your info and any ideas you might have. My shiny new 2021 GMC Sierra Denali 3.0 Duramax Diesel with 4900 miles on it has been losing its mind. I get multiple, rotating DIC messages: “Service ESC”, “Service Parking Brake”, “Service ABS”, “Adaptive Cruise Control Disabled”, “Steering Assist Reduced Drive with Care”, . . . ). The error messages come with other “benefits” besides disabled cruise control. I also enjoy no GPS signal, no Blind Spot sensors, no collision avoidance sensors, and who knows what else. Fortunately, the diagnostic codes were stored so the tech could see them, and I provided video of the DIC messages each time, too. They are on their 4th attempt to repair it now. First time, they replaced the Exhaust Particulate Matter Sensor (4025920) . Second time, they tried the same thing and replaced the Exhaust Particulate Matter Sensor, again. The 3rd time, they inspected the engine harness but found no damage so they replaced the pigtail to the Exhaust Particulate Matter Sensor and followed an 8 hr rest cycle and road test protocol. It worked for about 2 hours after I picked it up, then everything lit up again. This (4th) time, they are saying they will replace the entire wiring harness per GM’s direction. I do not want to use Florida’s Lemon Law, but I am starting the process just to be safe. BTW, I’m also getting the “long-crank/no-start” issue. They just applied the ECM update per TSB for this problem, so we’ll see if that worked when/if I get to keep the truck more than a couple hours between service appointments. I was having issues with the passive locking feature where the truck locks the doors a few seconds after I get out with the key in my pocket. It would not work even when set to on. Now that they did the Infotainment software update (V155) this seems to be fixed. I’m still having false messages that the SD Card for the Navigation System has been removed when it has not been. GM has a bulletin out so they know about this issue, but it appears there is no fix action on this one yet. After looking up each code listed on the repair orders (RO’s), I believe the main harness is a very likely cause of all the DIC error messages and system failures. Otherwise, all those modules and sensors involved have gone bad simultaneously. I suppose a power surge of some kind could do that, but then it seems the modules would not work fine in the short time between repairs. Here are the codes the tech reported on the last two Repair Orders (bold codes where noted on both RO’s): 2/5/22: B1A01 Speaker 1 General Electric Failure B395B Side View Camera Left P1488 Particulate Matter Sensor Protection Tube Performance U0020 Low Speed CAN Bus U0022 Low Speed CAN Communication Bus (+) Low U0077 Control Module Communication Chassis Expansion CAN Bus U0121 Lost Communication with Electronic Brake Control Module U0151 Lost Communication with Inflatable Restraint Sensing and Diagnostic Module U0155 Lost Communication with Instrument Panel Cluster Control Module U0184 Lost Communication with Radio Unit U0415 Invalid Data Received From Electronic Brake Control Module U0422 Invalid Data Received From Anti-Lock Brake System Control Module 2/10/22: B0967 Parking Aid On/Off Switch Circuit Short to Ground B1AO1 Speaker 1 General Electric Failure P1488 Particulate Matter Sensor Protection Tube Performance U0077 Control Module Communication Chassis Expansion CAN Bus U0121 Lost Communication with Electronic Brake Control Module U0131 Lost Communication with Power Steering Control Module U0151 Lost Communication with Inflatable Restraint Sensing and Diagnostic Module U0184 Lost Communication with Radio Unit U0415 Invalid Data Received From Electronic Brake Control Module U0421 Invalid Data Received From Suspension Control Module U0422 Invalid Data Received From Anti-Lock Brake System Control Module
  14. Now that owners are taking delivery of the new 2019 Chevy Silverado and GMC Sierra, I thought a quick reference guide to common routine maintenance items would be beneficial to us all. If you have information that you'd like suggest be added to this topic, just post below and I'll update this first post with any and all new/updated information. 2019 Chevy Silverado & 2019 GMC Sierra Routine Maintenance Quick Reference Guide -------------------------------------------------------------------------------- Digital Owners Manuals 2019 Chevrolet Silverado: 2019_Chevy_Silverado_Owners_Manual.pdf 2019 GMC Sierra: 2019_GMC_Sierra_Owners_Manual.pdf Oil Changes 2.7L(L3B) Capacity: 6.0 Quarts AC Delco Oil Filter: PF66 / 55495105 Drain Plug Size: TBD 5.3L(L84) & 6.2L(L87) Capacity: 8.0 Quarts AC Delco Oil Filter: PF63E / 19330000 Drain Plug Size: 15MM or XX Torx Engine Air Filters With High Capacity Air Cleaner: A3244C / 84121219 Without High Capacity Air Cleaner: A3246C / 84121217 Interior Filters Passenger Compartment Air Filter: CF185 Wiper Blades Drivers & Passenger Sides: 55cm / 21.7 Inches - GM Part Number 23417074 Spark Plugs 2.7L L4: 12688094 / 41-106-IP 4.3L V6: 12622441 / 41-114 5.3L V8 & 6.2L V8: 12622441 / 41-114 Fuel Tank Sizes Standard / Short Box (Gas & 4WD Duramax): 24 Gallons Standard & Short Box (2WD Duramax): 22 Gallons Automatic Transmission Fluid 6-Speed: DEXRON-VI Automatic Transmission Fluid 8-Speed: DEXRON-HP Automatic Transmission Fluid 10-Speed: DEXRON ULV Automatic Transmission Fluid (GM Part Number 19352619/Canada 19352620) Transfer Case Fluid All Models: 1.6 Quarts DEXRON-VI Automatic Transmission Fluid Wheel Lug Nut Torque All Models: 140 lb-ft / 190 N-m
  15. I've been wanting to install longtube headers on my 2007 sierra classic for awhile and now that I've noticed that the OEM exhaust manifold is cracked and one stud is broken I think it's the time to do so. Just wondering what info i should know before doing so. Do I need to have it tuned? I currently have a cold air intake, throttle body spacer and cat back exhaust but that's pretty much it.
  16. Hi just wondering if anyone would be able to help. My truck makes this rattling noice when being accelerated. When it started it wasn't that bad but has progressively got worse. It's worse when it's cold then goes away for the most part once the engine is warmed up. Sounds like it's coming from the front end. Thank you! 20220307_163644.mp4
  17. 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.
  18. I saw this video comparing most GMC Sierra 1500 exhaust but still cannot decide. https://youtu.be/UQsP4qnVbOM?t=61 Any tips on the best GMC Sierra 1500 exhaust? hp? sound? I would appreciate hearing from those that already upgraded their exhaust.
  19. I just purchased a 2021 GMC Sierra truck. I have set the channels which are staying set but the EQ settings keep going back to default settings when I get in and restart the truck back up. Any suggestions?
  20. I recently purchased a rebuilt title Yukon, comes with the magnetic ride. The ride is extremely rough, to the point where I’m assuming the system is just not operating. I’m not getting a message on the display for anything, unless the parking sensors and lane change sensors not working have something to do with it. The previous owner said he installed a 2” level kit to help the ride. At the time I didn’t understand what he was talking about. But anyone with any information or previous experience that could spread some knowledge, I would be thankful.
  21. Ok, I want to come back to the GMC/Chevy family. For over 20 years, I owned a 98 GMC Suburban, putting over 230k miles on it myself and LOVED the truck. I too owned a 2003 Chevy 1500...put many miles on it too. I am looking at the GMC/Chevy 2500 series diesel trucks. I will stay within the 2016-2019 year range, with about $35k plus'ish budget. I might look at the 2021 trucks, only due to many deals/rebates etc. What suggestions or tips are out there for these trucks? What should I watch out for and/or look at getting? So, a few years ago, I bought a 2015 Ram 1500 4x4 EcoDiesel Lonestar -- well, I have been disappointed with Chrysler/Fiat (FCA). Short story, they lied about the ecodiesel, and after forced recall ECM update, they sucked all performance etc., from the truck. When I had my suburban, I never had so many recalls, been lied to, and never had poor performance. Thanks, for any suggestions that you will provide. Gary
  22. Hey guys, I have a nice set of Metallic Brown door handles off my 2015 Silverado CCSB. I upgraded to chrome handles, so I don't have a use for these anymore. $60 shipped
  23. I have been through the menu's 100 times. How do you get the exterior temperature on the instrument cluster? It shows up fine on the Infotainment system however when using car play you cannot see external temp. Simply looking to have it displayed on the instrument cluster. Seems like an easy feature to be missing and get added. Thanks!
  24. Anyone have issues with a coolant leak the dealer “can’t find”. I bought my l5p denali duramax about 6 months ago and have put 15k on it in those 6 months. Mostly used for pulling my 43’ fifthwheel. Anyway the issue. At 3k the low coolant light came on and I brought it to the dealer. I was told air had not been properly removed from the cooling system when assembled so they burped it and I was on my way. I was good till 11k miles. At 11k the light came on again and I brought it in. The radiator was replaced, brought it home and started it a couple days later and the coolant light came on. Called the dealer same story burping air out so I topped it off myself. 11k noticed coolant puddle under it and coolant drips on passenger frame rail by front bumper. Brought it in and dealer couldn’t find a leak so I took it home. Two days later the coolant light came on and multiple drips were on the frame. So at this point I have executive GM involved with trying to figure it out. A couple things at this point have me worked up. Not one time was I offered a loaner car not once. After the radiator was replaced they put The plastic skid plate one under the radiator and broke it and left it on. So now I want a loaner when I drop it off. I wait almost a month before they give in and give me one and bring the truck back in. At this point the over flow is almost empty so it’s not leaking very fast. The truck now has 15k on it. I bring it it in and get a loaner car for the first time with 15k on it and the 4th visit in 6 months. Dealer still can not find a leak. I asked them to climb under they truck and look at the frame rail for coolant. He calls back and says it’s dry. So I send my wife to pick the truck up. She drives 15 miles home from the dealer and that’s it. When I got home from work I checked under the truck and it’s dripping coolant. So a couple of things so far, executive GM has done not one thing to help me out. I have done everything myself. They don’t return calls and do not return emails. The last time I brought my truck in the dealer refused to give me any paperwork showing that they actually looked at it they just gave me paperwork from my previous visit. He service advisor keeps telling me it’s burping out air and it’s residual coolant from the radiator replacement 4K miles ago and 2 months ago. I don’t know what to do. I have lost all respect for GM and their product.
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