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Found 81 results

  1. After being down nearly 6 months the Denali is almost finished. The shop based out of Hudson, NH “Granite State Dyno and Tune” has been incredible. Super professional with absolutely top notch craftsmanship. Here is the build. 2014 Sierra Denali 6.2L Block: GM 6.2L. Forged crankshaft Forged rods Diamond 10:7:1 Pistons. Precision Race Components ported Cylinder Heads w/ valve job PAC spring/ Valve Kit. Comp Cams rocker arms/trunion Texas Speed & Performance Stage 1 Camshaft +30% fuel lobe TSP AFM delete kit Lingenfelter ported 95mm throttle body Ported L86 intake manifold. All ARP bolts or studs. Fuel: GM ZR1 high volume fuel injectors GM ZR1 fuel pump Armageddon 465 LPH in tank fuel pump Snow Performance Stage 3 Meth Kit with controller and braided lines. Turbo: Borg Warner S480 T6 Turbo 1.32 AR billet 110/96mm. Turbo smart 50mm BOV Turbo Smart 60mm waste gate Pro Boost controller fully wrapped exhaust Cooling/Oil separators Mishimoto fully aluminum Radiator Mishimoto R-Line Intercooler 31x 12x 4” Mishimoto HD Trans Cooler 2X Mishimoto Black Aluminum catch cans. Transmission: Circle D pro 3 torque converter 2700 stall. I think that sums it up... I will post tuning videos and some driving clips as soon as they’re available. Should have it in the next couple weeks. I’m excite!!
  2. Anyone know what this noise is? It's very intermittent. Seems to do it most often between 40 and 50 MPH cruising with maybe a slight up hill. Never does it on coast or heavy acceleration. Very hard to tell where it's coming from. 20190521_191545_001.mp4 2014 Sierra Denali 1500 Crewcab, 5'8" bed 6.2 Litter 3.42 axle ratio about 118,000 miles
  3. Hey Folks, I've been searching all over the NET for info on this situation. I have a 2014 Sierra 1500 Denali 4x4 equipped with a 6.2L and the 6L80e. I'm looking to swap in the 8l90 and would like to know what it will take. The engine set up is capable of producing over 1100 hp however, I'm restricted due to the transmission. Any assistance would be appreciated.
  4. GMT-K2xx 2014-2018 Brand new in the box GM/Borla 6.2 exhaust. Part number on box shows dual side exhaust but laying it out it's a dual out the back exhaust, not what I wanted so its for sale. Part numbers on box are: 19303345 (dual out the side) and 19303348 ( dual 4" black tips). Parts have never been installed just laid out before install. Pictures are of actual parts. $950 takes it. Pm with contact info and I'll be quick to reply. Thanks Roy PREFER LOCAL SALE, DO NOT WANT TO SHIP...... Houston, Tx
  5. Sold my 2015 Silverado a few weeks ago and bought a new GMC Sierra SLT with the z71 package and the 6.2L v8! Had the camper shell moved over and sold the Silverado to my dad. It's been a great change so far. Nicer interior so my wife and daughter enjoy it. It's much quieter with the active noise cancellation, and the thing just SCOOTS! My 5.3 that i had before was modded and would move pretty quick but this 6.2 just puts it TO SHAME. Installed an AFE Momentum GT Intake on it a few days ago and it's even better. Just cracked 1000 miles over the weekend and it's already better on gas mileage, ride quality and everything in between than the silverado was. Very excited for the modifications to come. Looking to add some fox coilovers to all 4 corners in the next week or so, which will level it out and lift the front end. Will then upgrade to 10 ply tires, probably a good bit taller than stock. (thinking about cooper at3 XLT's currently in probably 275/65R20 or 285/60R20) Then planning to put airbags on the back for towing. Still undecided on exhaust setup, but will plan to do that and probably tune it in the future as well. Anyways, heres a pic of the truck when i picked it up. i'll post some pics of the intake after installation as well.
  6. Well, my 2016 LTZ Z71 6.2 Silverado with 28k miles is back at the dealer again, Last summer it started the well known trans shutter, The Gm service flush did correct that problem. This weekend I switched on the AC, you guessed it, Hot air. No bad fuses and compressor not running, Dealer said the system was empty and they can't find a leak. On to the third problem, I have an intermittent whine from the left side front of the engine, First time I heard it I blew it off as a belt whine. This weekend when checking the compressor fuses it started again, only lasted a few minutes and stopped, I shut it off, left it sit for an hour, started it up and the whine was back and this time I had my phone to capture the noise but the dealer can not replicate the noise. The whine sure sounds like it was coming from the water pump but after reading about all the 2014-2016 vacuum pump failures I'm not so sure this isn't one more for the list. Biggest problem, My GM warranty runs out in three weeks !!! Chevy 6.2.mp4
  7. Hey fellas, I purchased a 09 Yukon Denali. Had it for 160000 miles in Feb 2017. Good truck. However, I’ve been putting the wrong gas. Gave me a tick. Took it to a performance shop to get an opinion. He suggested a rebuild since the motor was detonated. I was game. I then asked about getting a little more power. He suggested a slightly bigger cam. I was game. I paid him. He swapped my motor and gave it back. The piston cracked and got stuck in the block damaging the heads and block . I took it to texon motors to get it evaluated and they suggested we call it junk. I was game. So now I am looking for a 6.2. L 9 H . My question is . Would I waste money buying a used motor and getting it rebuilt vs buying a Reman. I’m just looking for input to make a good decision before I get stuck again.
  8. John Goreham Contributing Writer, GM-Trucks.com 12-12-2018 Wards has named the General Motors 6.2-liter V8 engine with Dynamic Fuel Management (DFM) to its 2019 Wards 10 Best Engines Award list. “General Motors’ thundering 420-horsepower V-8 in the Silverado exemplifies how engineers continue to find ways to improve efficiency without giving up something in return. DFM determines 80 times per second exactly how many cylinders require fuel to meet power demands. And, incredibly, it uses as few as two cylinders to propel the full-size pickup down the highway,” says Wards' Senior Content Director Drew Winter. “The truly amazing part is the cylinder deactivation is imperceptible, so seamless that the only thing the driver notices is fewer stops at the pump." Coincidental to the award, GM-Trucks.com has just taken delivery of a long-term tester with this very engine. “Chevrolet first introduced its Active Fuel Management cylinder deactivation system in 2005, and Dynamic Fuel Management is a natural progression of the technology,” said Jordan Lee, Small Block chief engineer. “Dynamic Fuel Management enables only the cylinders needed to deliver the power you want, seamlessly delivering the best balance of power and fuel economy.” The full list of Wards' 10 best engines is as follows: 3.0L (B58) DOHC Turbocharged I-6 (BMW X5) 6.2L OHV V-8 with DFM (Chevrolet Silverado) 5.0L DOHC V-8 (Ford Mustang GT/Bullitt) 3.0L DOHC TurboDiesel V-6 (Ford F-150) 2.0L DOHC Atkinson i-VTEC 4-Cyl./HEV (Honda Accord Hybrid) 120-kW Fuel Cell/Electric Propulsion System (Hyundai Nexo) 150-kW Propulsion System (Hyundai Kona EV) 2.0L DOHC VC-Turbo 4-Cyl. (Infiniti QX50) 2.0L DOHC Atkinson 4-Cyl./HEV (Lexus UX 250h) 3.6L DOHC Pentastar eTorque V-6 (Ram 1500)
  9. Hello all, just picked up a 2011 Sierra Denali here and the truck is missing any type of manuals. I was wondering if someone on here could either provide me a link to an online version or copy me the 100,000 mile recommended maintenance? Thanks in advance!
  10. I have a 2018 Sierra 6.2 with Kooks headers, Kooks cats and K&N CAI. I've been thinking about installing a Whipple or a Procharger but I'm considering nitrous too. I'm looking at a Nitrous Express 20936 kit. I just want the extra occasionally and I'm concerned that the supercharger noise will be annoying. Anyone using nitrous on their similar truck?
  11. I just bought my 2019 Sierra Denali with the 6.2 and the 10 speed auto 😀 has good power just wondering about a tune especially which should wake this bad boy up if anyone has the new Silverado/Denali let me no what y’all think 🤷🏼‍♂️
  12. Seen alot of posts like this but none that quite answer my question. I have a 2018 Sierra 1500 Denali with the 6.2. I am thinking about installing an electric exhaust cut out before the muffler. (For arguments sake let's say my best friend is the warranty manager at my local dealership so I am not concerned about warranty mumbo) What I'd like to know is if I am going to run into any check engine light or any other messages popping up that she will pissed at me about it. I noticed alot of people with '14s and '15s not having issues with them but I feel like this 2018 has so many sensors and is so touchy that I'm hoping to hear from someone on here with the same year that has done it or knows of someone who has? I dont have any oxygen sensors back that far but is this engine computer smart enough to realize there is no backpressure from the muffler or something like that. I may just be being paranoid but really dont want to have to look at an idiot light over it. Wouldn't be worth it..or would it Any logical input would be very appreciated!
  13. I recently bought a new 2018 Silverado 1500 Crew Cab LTZ with the 6.2 liter & 8 speed transmission. I bought the truck in Idaho (great deal) and drove it home to California. Since then I've only put a few hundred more miles on it, 1181 total miles to be precise. Yesterday the tranny started shifting really hard & clunking on downshifts. Today, when I put the truck into drive it barely moves! Obviously, the transmission is slipping as the engine revs but the truck doesn't really move much! Any info on if the truck can still be returned at this point or am I stuck rebuilding a brand new tranny? Doesn't seem right to have to go through this so soon! I hope GM will either let me return the truck completely or give me a brand new transmission. Any insight on what may happen would be appreciated! Thanks in advance!
  14. Wondering if these engines will be tune-able as usual? Currently have my 2500hd LBZ, but am I'm looking to get back into a half ton for 2019. Ideally would like a 6.2 again.. Only concern is issues with tuning them like the new L5Ps uncrackable ECM. Want either Armageddon twin turbos or a supercharger with a mild cam down the road. If they're not, looks like I'll stick with my old truck.
  15. My 2014 Sierra 6.2 has 36k on it. Occasionally when I floor it going from the 1 to 2 shift and 2 to 3 it will make a backfiring noise and puffs a little dark smoke. Has anyone else heard of this issue or have any idea what would cause it? It's weird because it seems to come and go. It's stock tune with an airaid intake and gm Borla exhaust. I didn't notice it was doing it until I put the exhaust on. I've been considering a black bear tune and thinking that may help if it's a tune issue .
  16. Hey Guys, I have a 2010 Chevrolet Tahoe PPV with a 5.3L LMG and a 6L80 Trans (MYC) looking to drop in a 6.2L L9H. As far as I understand it is a direct swap. Would I run in to any issues or codes as far as the L9H not having AFM/DOD? I plan on using the 5.3L PCM and having it re flashed to work with the 6.2 Or do I look for a L94 that has FlexFuel, VVT, AFM like the LMG does?
  17. Hello everyone, I have a 2009 6.2 L9H planned for a project. Looking for info on what is needed, how to make a stand alone harness with the e38. Intended vehicle is a pro 2 truck with no luxury items needed. Mated to a th 400 manual valve body trans. Thanks much
  18. Okay so I bought a new Silverado last year, the day I took it home I installed a number of things, one of those things being a wix "coolant" filter Part #33032. GM actually has a perfect quick disconnect on the fan shroud so I just unclipped that and slid the filter into place. Why? I've just always been curious on a brand new truck. Does it actually matter? I don't think so because the trucks don't have a coolant fed oil cooler that could clog like the corvettes do so I actually might recommend it to those guys who do. What I found interesting was once I opened the filter there was a ton of gunk of a muddy type consistency. I've included a few pictures keep in mind the truck only had 7500 miles on it or so when I took this filter off. I don't see this playing a huge role in the lifetime of a vehicle (which is why GM probably doesn't include one) but I'm sure the gunk would clog small radiator/engine passages over time (years) of course.
  19. Hey Everyone, I am about to pull the trigger on a 2017 or 2018 Sierra 1500 SLT. My main issue right now is do I buy one on the lot with the standard V8 (5.3) or do I order one with the 6.2 L? I tow a 5000 lb travel trailer often and a smaller 10 foot utility trailer. I am coming from a Diesel Volkswagen Touareg with over 400 lb feet of torque. This will be my daily driver. I am not concerned about the money to upgrade the engine but more so whether It is worth it. I really like the power ratings of the 6.2 l but is it that much more noticeable than the 5.3? I don't want this truck to feel "slow" since I am coming from a torquey vehicle. Thank you
  20. SCH_4845.jpg

  21. 325 PayPal, or 275 PayPal gift shipped 2 day priority. Mails immediately . Around 10k on it. Never cleaned the filter as it’s not even dirty. But I’ll clean it and oil it before shipping as well.
  22. I was wondering if anyone has had a valve stem break on the L86 exhaust valve.
  23. I was wondering if anyone has had a plugged catalytic converter? the truck is currently in the dealers shop, The truck has 4000 km on it lost power and stalled on the side of the road no warning no cil before. The dealer is replacing the catalytic converter first they can't get it to run and GM will not let them do anything until they replace the catalytic converter. i don't know if the catalytic converter got melted down or plugged they had not cut it open yet.
  24. From the album 2017 Silverado 1500 Midnight Edition Z71 LTZ Black / Black

    2017 Silverado 1500 6.2 LTZ Z71 Midnight Edition * Roll-N-Lock Bed Cover * Custom 10" Sub Box w/Storage * Nitto G2's 305/50/20's * GM Performance 3.5" Exhaust (made by Corsa) * To Be Continued...
  25. Oil Catch Can

    has anyone invested in an oil catch can? if so, what one and what kind of success??? Worth it?
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