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2013 GMC 6.2 engine problems

GMC 6.2 Engine Problems- Engine Failure One owner of a 2014 Denali reported engine failure with his 6.2 engine. While the owner said that the Denali owned offered plenty of torque for towing a 20 ft car trailer, it used virtually no oil L94 6.2 Reliability in 2013-2014 Yukon Denali. Thread starter Jettix2; Start date Sep 1, 2018; Sep 1, 2018 #1 J. Jettix2 is the L94 a pretty reliable engine? I purchased it at 82k with apparently a pre-existing problem that went un noticed by the dealer I purchased from out of state. I noticed right away the oil pressure was dropping. 1. not that I've heard of. in 4,500 miles mine hasn't used a drop. keep in mind that this version (trucks) of the 6.2 doesn't have AFM. 2. aluminum. 3. I've run 87, 89, 93, and E85. mileage sucked with 87 and was worse with E85. power was great with E85 though 2013 GMC Yukon problems. (16) View all. 2014 GMC Yukon problems. (8) View all. 2015 GMC Yukon problems. (8) View all

GMC Engine & EcoTec3 6

  1. View all. 2013 GMC Sierra 1500 problems. (9) View all. 2014 GMC Sierra 1500 problems. (7) View all. 2015 GMC Sierra 1500 problems. (7
  2. Joined May 26, 2010. ·. 365 Posts. #8 · Feb 4, 2017. Because it is the right thing to do and there are well known and well documented issues with these 6.2 motors. Please don't confuse this with me saying that Cadillac should repair anything and everything forever. Furthermore, I have always thought that powertrain issues should not be bound.
  3. I have one, runs great but eats driver side engine mounts which seems to be common. I was at an event with some GM truck engineers and asked why the 6.2 wont make it into a 2500, they said its because the engine wouldnt live up to the duty cycle of the HD platform, so overall life/reliability as a tow rig may not be the best compared to a 6.0L
  4. The site has collected 112 different problems about the GMC Sierra. The model years with the most problems reported were 2004 and 2007, with more than 60 complaints each year, followed by 2002, 2003, 2005, and 2010, with more than 40 each year. Of the 112 problems, five different complaints have been reported 90 or more times
  5. Just checking in to see if there was any information out there with potential engine problems with the 6.2. I have a 2014 Denali with one of the early 6.2 engines. I had been very pleased with it. It has lots of torque for towing my 20 ft car trailer, it has used NO oil, it gets great mileage for a bigger engine

Cognito Debuts Chevy Silverado HD, GMC Sierra HD 10-Inch/12-Inch Lift KitsJuly 13, 2021 Buick Envision To Receive New 1.5T Engine In China July 13, 2021 Pininfarina To Design Hercules Alpha. The 2013 GMC Sierra 1500 has 128 problems & defects reported by Sierra 1500 owners. The worst complaints are body / paint, accessories - interior, and engine problems A recent GM class action lawsuit claims that GMC and Chevrolet vehicles manufactured by the auto company are equipped with defective engines. According to plaintiff Thomas Szep, GM vehicles with Generation IV 5.3 Liter V8 Vortec 5300 engines suffer from engine failure due to defects.. The defective engines allegedly consume an abnormally and improperly high amount of motor oil which. From 2010 to 2013, GMC's 5.3L V8 Vortec 5300 engine has a higher than normal rate of complaints about excessive oil consumption. A lawsuit blames a design change that was made to improve the engine's overall performance. As part of that change, owners believe defective piston rings allow oil to seep into the engine's combustion cylinders and burn off early GM 6.2 Liter V8 Vortec L94 Engine The 6.2L V8 Vortec L94 was an engine produced by General Motors for use in luxury SUVs, namely the 2006-2014 GMT900-based Cadillac Escalade/Escalade ESV and GMC.

L94 6.2 Reliability in 2013-2014 Yukon - GMC Yukon Foru

According to CarComplaints.com, owners claim the fourth-generation Vortec engine was engineered with defective piston rings, causing oil consumption problems and even the possibility of an engine fire. The engine in question is the 5.3-liter Vortec in the following GM models: 2010-2014 Chevrolet Avalanche; 2010-2013 Chevrolet Silverad Seals and/or weather-stripping. Windshield seal would vibrate/rattle at highway speed or driving into strong head winds. Anonymous, MI (2013 GMC Sierra 1500 SLE 5.3-L V8) Leaks water at the. General Motors has officially captured the horsepower crown for mainstream pickup trucks with its 6.2-liter V8. The big mill, available in both the Chevrolet Silverado and GMC Sierra, comes to.

I have the same exact problem in my 2013 Silverado. I bought the truck with 17,000 miles on it and at 30,00 it started fouling plugs. Had it at the dealership and they replace pistons and rings. Still did not fix the problem. A new engine was supposedly put in by the dealership and that engine has the same issues Jan 04 2012, 10:34pm. bob m wrote: Interesting post. I have a 2007 Denali 1500 with a 6.2l. It has 145.000k's. Well I has a cold knock which sounds like a bad connecting rod, it goes away when it warms up. On top of that it has almost no oil pressure at idle when the engine is at normal operating temp. Also when I park in the garage I can smell. 2013 GMC sierra 1500 review. Performance is good, comfortable ride, quiet engine, have had this truck for 5 years and had to have minor maintenance done to it besides normal things (such as changed out headlights, battery). Comfortable seats, great a/c and heater. Radio and speakers are good

The 2015 GMC Sierra 1500 has 36 NHTSA complaints for the engine at 46,815 miles average. (Page 1 of 2) CarComplaints.com : Car complaints, car problems and defect informatio GM will notify owners, and dealers will inspect the affected vehicles and replace the steering column as necessary, free of charge. The recall began on January 21, 2013. Chevrolet owners may call. Good Evening, I have a 2013 GMC Yukon Denali with the 6.2 liter engine which I purchased new in August of 2012. When I drove the Denali home 5 hours and for the first 4000 miles it performed amazingly for an SUV. I was impressed with the throttle response and the crisp shifts almost as if it were in tow haul mode but not quite as aggressive with holding the shift points as high 3.2 Other Chevy 6.0 Oil Pressure Problems and Solutions Low oil pressure. A check engine light due to low oil pressure is a common complaint in GM (General Motors) vehicles years 2007-2016 that have V8 engines.It is also known as DOD (displacement on demand) Chevy 6.0 Engine Problems. The 6.0L Vortec 6000 engine was introduced in 1999 and remained in production until 2019 when it was replaced by the 6.2L Vortec. The Chevy 6.0 is a small-block V8 engine that produces 300hp-345hp and 360tq-380tq, depending on the engine version. The 6.0 engine had nine variations over its 20 year life span

Any Issues With The 6

View all 8 consumer vehicle reviews for the Used 2013 GMC Sierra 1500 on Edmunds, or submit your own review of the 2013 Sierra 1500 Find the engine specs, MPG, transmission, wheels, weight, performance and more for the 2013 GMC Sierra 1500 Crew Cab Denali AWD Second opinion] Oil pressure problems on my 2013 GMC Sierra Denali 6.2L. I replaced the oil pressure sensor, removed the filter associated with the sensor, then replaced the oil pump. I get oil to the filter but not up to the sensor. I also have dropped the oil pan to check for trash at the pick up tube, and nothing. Any ideas I have a 6.2 N/A (small piston not large) chevy (1983) 3/4 ton. I bought as a project to give to my son. He bought a stang instead. I joined online (the diesel page.com) this is a really good source of information about the 6.2L, 6.5L and Duramax diesels. The subscription is either 29.00 or 39.00 a year

I have a 2013 GMC sierra 1500 5.3 V8 vortec engine that i just got not even 1 yr ago and has left me with so much problems in my life time then i ever had with any other vehicle in the past. Owning the bank and trying to solve the problem with GM Motors and being rejected as for no fault charging me 10,000.00 for the performance to fix my truck I have a 07 6.2 as well. Same issue here sounds like a diesel in the morning after the engine warms up it goes away. My oil pressure at idle is about 12psi and jumps up to over 40 when driving I think I might have a blown out o-ring on the oil sender tube. Other than that truck runs like a champ See real-world GMC Sierra 1500 engine problems and repair histories as reported by other GMC Sierra 1500 owners. Also, see repair breakdown by problem area and cost. 2013 GMC Sierra 1500 4dr Crew Cab 5.5ft bed. 315-horsepower 5.3L V8 6-speed shiftable automatic 4WD w/low range View your GMC vehicle's specific recall information and active notifications at the GMC Owner Center Recall action. GM will notify owners, and dealers will inspect the affected vehicles and replace the steering column as necessary, free of charge. The recall began on January 21, 2013. Chevrolet.

The engine seems to run and sound perfectly- but one BIG problem. When idling at a red light, the CEL starts flashing, with the dreaded Stabilitrak message etc. Then when the light turns green, I get the hard shift between 1st and 2nd, and then the message goes away, just leaving a sold CEL The most current models affected are 2007-2012 Cadillac Escalade, 2007-2012 Chevrolet Silverado, 2207-2012 GMC Sierra, 2007-2012, GMC Yukon Denali, and the 2007-2012 GMC Yukon XL Denali equipped with the 6.2 liter engine. According to the TSB, the noise may begin in the first 12,000 to 15,000 miles and lasts between 5-30 seconds

2013 GMC Yukon Problems and Complaints - 16 Issue

2013 GMC Sierra 1500 Problems and Complaints - 9 Issue

P0306 is a fairly common trouble code with the GMC Yukon.It's and OBD2 code and stands for:. P0306 is certainly a cause for concern, and should be considered a threat to the drivability your Yukon. The nice thing about P0306 is that it's a cylinder specific trouble code, which makes diagnosing the problems much more simple than P0300, which means that the cylinders are randomly misfiring Engine Clicking And Tapping Noises problem of the 2013 GMC Yukon 1. Failure Date: 01/19/2021. The contact owns a 2013 GMC Yukon . The contact stated that while driving at an unknown rate of speed, a loud ticking noise occurred. The contact noticed a code was displayed on the instrument panel: p3400 cylinder deactivation system performance Piston-to-valve clearance can be a problem. I have an 09 GMC Sierra I have recently did a 5.3 to 6.2 swap I am deleting my VVT off the 6.2 I have got a new cam new sprocket new chain but I am having an issue I need to know how is my timing chain lubricated with my new cam the VVT cam has a weep valve that lets oil pass through my new cam. P1693 Tachometer Circuit Low Voltage - Read Our Article on Automotive Circuit Testing For Help With This GMC Check Engine Light Code. P1694 Tachometer Circuit High Voltag - Read Our Article on Automotive Circuit Testing For Help With This GMC Check Engine Light Codee. P1695 Remote Keyless Entry Circuit Low. P1696 Remote Keyless Entry Voltage Hig P0304 is a relatively common GMC Yukon trouble code. It stands for: P0304: Misfire Detected → Cylinder 4. P0304 is certainly a cause for concern, and should be considered a threat to the drivability your Yukon. The nice thing about P0304 is that it's a cylinder specific trouble code, which makes diagnosing the problems simpler than P0300, which means that the cylinders are randomly misfiring

The Ecotec engine typically has problems with its timing chain, which frequently slips and wears down after long periods of use. The tensor in the engine also suffers from damage sometimes, and the cylinders may not fire as they are supposed to, resulting in decreased engine efficiency. In order to avoid extensive damage to the vehicle, users. P1682 GMC Description. There are 2 ignition 1 voltage circuits supplied to the Engine Control Module ( ECM ). The first ignition circuit is provided by the powertrain relay, through a fuse. This ignition 1 voltage circuit supplies power to all the internal ECM circuits associated with the throttle actuator control (TAC) operation I drive an 08 GMC Sierra 1500 5.3L Z71 4x4 116k miles no warranty. YAY.:banana-mario::banana-mario: Problems:-Code P0306 (Misfire #6 Cylinder)-Rough Idle-Flashing Check engine light-Service Stabilitrak/Traction Control Messages-Hard gear shift from 1-2,2-3 also on downshift-Very high oil Consumption (3 quarts low) Tried:-New plugs,wires,coil Pre-owned GMC Yukon XL models are available with a 6.2 L-liter flex-fuel (FFV) engine or a 5.3 L-liter flex-fuel (FFV) engine, with output up to 403 hp, depending on engine type. The Used 2013 GMC.

This is a common 5.3 liter Chevy engine problem reoccurring mostly in cylinders 1,4,6 and 7 of General Motors 2005-2014 models of it. The cause of this problem is usually an active fuel management (AFM) lifter. The ticking noise problem occurs when the AFM lifter is mechanically broken or stuck At long last, the slow tide of information is all the way in: GM has finally released fuel-economy data for the Silverado and Sierra's top-dog 6.2-liter V-8 engine. The big V-8 sits above the. Answer: The 2013 GMC Sierra features several engine sizes. The 4.3 liter V6 useS4.5 US quarts of 5W-30. The 4.8 l V8 is equipped with 6 US quarts of the same lubricants. The Sierra's three largest engines, the 5.3 l.. Original review: Jan. 14, 2021. I now own my 4th Yukon Denali. I have decided this is my LAST! 2007, 2013, 2015, 2017. Hindsight, the 2007 was my favorite and I have never reached 100,000 miles on. Premature injector failure was a critical problem for the 2001 to 2004 model year Duramax LB7. GM corrected the problem with an updated injector design and even extended the warranty on the new injector design to 7 years/200,000 miles. If you are buying a used truck, be warned that not all engines have been retrofitted with the new injector design

GMC Acadia Purge

6.2 Engine issues and GM's response Cadillac Owners Foru

2018 GMC 1500 with 6.2 engine.Been to the dealer 3 times (Thompson,in Springfield,Mo.) Transmission hard shift from 1-2. Have tolls them it needs to sit overnight or a least 8 hours.Seems to be getting wors Problems regarding Chevy 5.3L engines. Problems regarding Chevy 5.3L engines, AERA technical committee offers the following information. Regarding a ticking noise or misfire on 2005-2014 GM V8 engines. Therefore with AFM (Active Fuel Management, formerly known as displacement on demand (DoD)) Original review: July 7, 2021. My 2021 GMC Sierra Denali 1500 had to have new lifters ordered at 5000 miles. I had a complete engine failure on a brand new vehicle purchased in February 2021

Just to let everyone know there is a problem on several of the GMC cars including the 2010-2013 Terrain and Equinox. The PVC system does not like cold weather (0F or -18C). The PVC system freezes and the rear oil seal will blow. I blew the engine on my two year old 2011 Terrain and 5 days the rear oil seal GMC Yukon and Yukon Denali Problems. winger25 Member Posts: 1. June 2003. in GMC. Until last week I was the unfortunate owner of a 2001 GMC Yukon Denali. This vehicle was so plagued by problems that it made 9 trips to the dealer for repairs within the first 15 months of ownership. It had been in the shop 6 times since the first of the year

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2007-2013 GMC Sierra 2009-2014 GMC Acadia 2008-2014 GMC Savana 2008-2014 GMC Yukon, Yukon XL 2008-2009 Hummer H2 2009-2010 Hummer H3, H3T the vehicle could display a check engine light, stall, or fail to start. If the vehicle experiences this condition and stalls while in motion, there could be an increased risk of a vehicl Buy Engine Rebuild Overhaul Kit FITS: 2009-2013 Chevrolet GMC Cadillac 6.2L 6200 V8 Vortec L92 L94: Engine Kits - Amazon.com FREE DELIVERY possible on eligible purchase The four-wheel-drive Yukon with the 6.2-liter engine gets an EPA-rated 14/19/16 mpg city/highway/combined. More From Cars.com: 3 Things to Know About the 2022 GMC Hummer EV Pickup Truc Texas Speed & Performance DOD / AFM Delete Kit for 5.3/6.0/6.2 Engines Reviews Return Policy. Texas Speed & Performance DOD / AFM Delete Kit for 5.3/6.0/6.2 Engines fits the following vehicle(s): 2008 Cadillac Escalade 2009 Cadillac Escalade 2013 GMC Sierra 1500. Chevy Silverado and GMC Sierra Gasoline Engine Problems. swiederin Member Posts: 1. April 2006 in Chevrolet. I have a 99 Silverado w/5.3L engine. The idle speed is too low. It gets as low as 430 rpm when I firsty put the tranny in drive and then the idle increases to a more acceptable level. There are no DTC's

GMC Denali and 6.2L V8 Reliability? Pirate 4x

Problem 2 of 4: The Failure of TPS (Throttle Position Sensor) Throttle position sensor or throttle body sensor failure is another of commonly taken place problems that Chevy 6.0 Engine owners have to go through. TPS is a sensor that is located somewhere near the throttle body The 6.2 is a very smooth, powerful engine. It is great on the highway and has easily towed 9,000 pounds several times. As for the 6.2l GMC engine, I have not heard of many problems or major recalls on it. It is a big engine and I have yet to find anyone get an honest 18 or more mpg's even on the highway but it certainly would have no. I have a GMC Yukon XL Deanli with the 6.2 liter engine. I have a tic/knock. in the engine. Then it started to run rough and the stabilitrack traction. control lights came on. It also triggered a misfire code on cylinder 2. I took. cylinder 2 spark plug out and it was bent over (see pic). I gapped the plug Piston slap is caused when there's too much space between the piston and the cylinder wall. The piston moves up and down in the cylinder and the extra clearance results in a greater amount of rocking in the cylinder, producing a loud knocking noise. Specific models include (but may not be limited to): Chevrolet Silverado, Tahoe and Suburban. Campaign: 13V001000 on 01/01/2013 Component: Power train:automatic transmission Manufactured: 11/26/2012 - 12/17/2012 Affected: 54,686 Defect: General motors (gm) is recalling certain model year 2013 cadillac escalade, escalade esv, and escalade ext; chevrolet avalanche, express, silverado hd, silverado ld, suburban, and tahoe; and gmc savana, sierra hd, sierra ld, yukon, and yukon xl vehicles.

The Most Common GMC Sierra Problems You Should Know Abou

For those looking at new or used Fords with the 6.2-liter V8 engine, The Drive's informational team put together a handy reliability guide for all the problems and issues you need to watch out for GM has received fuel-economy ratings for the redesigned 2014 Chevrolet Silverado 1500 and GMC Sierra 1500 pickups with the optional EcoTec3 6.2-liter V-8, we learned this morning at a breakfast.

Buy used GMC Yukon XL 1500 motors/engines from our network that offers up to a two-year warranty on qualified units! We carry a wide-ranging catalog of used GMC engines for all applications including gas and diesel engines. Buy your used GMC Yukon XL 1500 motors/engines from us and save time and money The 2015 GMC Sierra Denali 6.2L V8 is the most powerful light duty pickup that you can buy. The 6.2L V8 is basically the same small block Chevy in the brand new Chevy Corvette Stingray and puts. These engines feature direct injection, continuously variable valve timing, and cylinder deactivation. The 5.3L V8 is no exception. Both V8s delivered good real-world efficiency in our testing. And blown engines were a fact of life for hundreds of Silverado owners across North America. From 2007 through 2009, the engine problems continued to plague Chevy and the sister vehicle, the GMC Sierra, with the 5.3-liter V8 engine. You couldn't get away from it, whether it's the oil pressure problem, engine knock, or excessive oil consumption

SilveradoSierra.com • 6.2 Engine Failure : Vortec 6200 6.2L V

View your Chevy vehicle's specific recall information and active notifications at the Chevrolet Owner Center Chevrolet Performance 19329008 - Chevrolet Performance DR525 LS 6.2L Drag Racing Long Block Crate Engines. Engine Assembly, Crate Engine, DR525, NMCA, Chevy, 6.2L, 376, 525 hp, 1-Piece Rear Main Seal, Muscle Car Oil Pan, Each. Part Number: NAL-19329008. Not Yet Reviewed What is the cost to diagnose the P2135 GMC code Labor: 1.0 The cost to diagnose the P2135 GMC code is 1.0 hour of labor. The auto repair's diagnosis time and labor rates vary by location, vehicle's make and model, and even your engine type. Most auto repair shops charge between $75 and $150 per hour GMC Yukon XL 1500 Engine hesitates during acceleration Inspection at your home or office. 2013 GMC Yukon XL 1500 V8-5.3L: Service type Engine hesitates during acceleration Inspection: If the mechanic believes the problem is the fuel pump, he or she will remove the fuel tank if necessary to inspect the pump.. 1. Excessive Oil Consumption. One of the most common 2007-2013 GMC and Chevy truck problems owners experience is excessive oil consumption. This problem led vehicle buyers to launch a class-action lawsuit against GM, which alleged 2010-2013 vehicles with Generation IV 5.3 Liter V8 Vortec 5300 engines were defective.Specifically, the lawsuit claimed the active fuel management (AFM) system.

What is A 4.8 Vortec Engine? img source: motoringcrunch.com. The Vortec 4.8L V8 L20 belongs to the category of the V8 engine. It is a 250k engine for your full-size Chevy truck and Chevy Silverado truck.. The Silverado based engine has a horsepower of over 195 and the Vortec can create up to 295 horsepower plus over 300-pound torque Engine 2018 GMC Yukon XL 1500 5.3L VIN C L83 Motor Only 14K (-Oil Pan) $2,595.00. Was: $3,520.00. $259.99 shipping. 2004 Silv C2500 USED 6.0 Gas LQ4 w 4L80 2wd 231k

Bulletin Addresses GM V8 Valve Spring Issue GM Authorit

Cost of diagnosing the P0308 GMC code Labor: 1.0 The cost of diagnosing the P0308 GMC code is 1.0 hour of labor. The auto repair's diagnosis time and labor rates vary by location, vehicle's make and model, and even your engine type. Most auto repair shops charge between $75 and $150 per hour A GM oil consumption settlement has been approved by a federal judge for customers of 2010-2013 Chevrolet Equinox and GMC Terrain SUVs equipped with 2.4-liter Ecotec engines. Case Filed September 2018. A Chevy Equinox Ecotec engine lawsuit alleges the piston rings, spray jets and PCV systems all contribute to oil consumption and engine damage The 2013 GMC Sierra Hybrid comes with a vastly more complex drivetrain, pairing a 6.0-liter V-8 with cylinder deactivation to an electrically variable transmission (EVT) with two electric motor.

2013 GMC Sierra 1500 Problems, Defects & Complaint

Engine Technologies; Transmission Technologies; Other Technologies; Extreme MPG; 2013 GMC Sierra C15 2WD 8 cyl, 6.2 L, Automatic 6-spd Regular Gasoline: Not Available. 6.2 gals/ 100 miles . 2013 GMC Sierra K15 4WD 8 cyl, 5.3 L, Automatic 6-spd Regular Gasoline Mileage: 196,675 miles Body Type: SUV Color: Red Engine: 8 Cyl 6.2 L. Description: Used 2013 GMC Yukon Denali with RWD, Preferred Equipment Package, Navigation System, DVD, Leather Seats, Bucket Seats, Wind Deflector, Alloy Wheels, 20 Inch Wheels, Third Row Seating, and Cooled Seats. 2013 GMC Yukon Denali SUV Find CHEVROLET SILVERADO 1500 6.2L/376 Exhaust Systems and get Free Shipping on Orders Over $99 at Summit Racing Learn more about the 2013 GMC Yukon. Get 2013 GMC Yukon values, consumer reviews, safety ratings, and find cars for sale near you. The 5.3-liter and 6.2-liter engines use this technology to.

GM Class Action Says Engines Fail Prematurely Top Class

However, if the engine is working harder, fuel economy may fall. The maximum towing ratings for 6.2-liter V-8 Silverado and Sierra crew cab 4x4s with 3.73 rear axles rises to 10,400 pounds, up. Find the best used 2013 GMC Sierra 1500 Denali near you. Every used car for sale comes with a free CARFAX Report. We have 17 2013 GMC Sierra 1500 Denali vehicles for sale that are reported accident free, 6 1-Owner cars, and 20 personal use cars

GMC Vortec Engine Design Flaw Causes - GMC Problem

The problem we are correcting/curing is separating the oil vapors from these combustion byproducts so the oil is not causing the coking and detonation that degrades the power and economy and engine life. The oil separating system installs inline on the final path of the dirty side before it enters the intake manifold Difficulty Scale: 5 of 10. Start with the car on level ground, in park with the emergency brake set. Step 1 - To verify the engine oil pressure is low, start the engine (cold) and observe the gauge or light. Step 2 - Using the engine oil dip stick, check the oil level of the engine and ensure a proper level. Step 3 - The oil pressure switch is. Performance: 8.2. Reviewers say the 2013 GMC Sierra 1500 offers ample engine power from its range of optional V8 engines and has a comfortable, composed ride. They say its steering is fairly accurate and nicely weighted, though some comment that it is harder than some rivals to maneuver in tight spaces. Fuel economy is decent with the optional. Chevrolet-GMC Diesel Diagnostics 2011-2016 6.6 L | 2007.5-2010 6.6 L | 2001-2007 6.6 L | 6.5 L DS Pump | 1982-1993 GM/Ford IDI. 2011-2016 6.6L LML - LGH Duramax PDF: 2011 - 2016 6.6L LML/LGH Duramax. In order to do proper diagnostics you will need a scan tool, diagnostic service information and some special tools such as a vacuum test gauge J44638 (OTC 6754) available from GM Special Tools.

Fuel Economy. GMC offers three new engines for the 2014 GMC Sierra 1500: a 4.3-liter V6, 5.3-liter V8 and 6.2-liter V8. These power plants are more powerful than the engines that they replace, carry greater payload, tow more weight and, based on figures released to date, they're more fuel efficient Introduced to the Sierra in 2015 paired only with the biggest engine available, a 420-hp 6.2-liter V-8, the eight-speed has since become an option on certain Sierras equipped with the 5.3-liter V. Fuel system, brakes, electrical and engine issues among the top complaints received by the NHTSA from vehicle owners. 2020 GMC Sierra 1500. While the 2020 GMC Sierra 1500 isn't the most popular among the pickup segment, it is considered a higher-end model. Even the automaker claims it provides details with distinction.