The 2014 GMC Yukon on the GMT900 platform is generally reliable, but suffers from catastrophic AFM-related engine failures and persistent transmission fluid cooling issues that can destroy both powertrain components if ignored.
Active Fuel Management (AFM) Lifter Collapse and Engine Failure
Common · high severity
Typical onset: 80,000-150,000 mi
Symptoms: Ticking or tapping noise from engine at idle, often cylinder 1 or 7, Check engine light with P0300-P0308 misfire codes or P0521 oil pressure code, Rough idle and loss of power under acceleration, Metal shavings in oil, catastrophic failure if driven after symptoms appear
Fix: AFM lifters fail, wiping camshaft lobes and sending debris through the engine. Repair requires cam, lifters, and often complete engine rebuild or replacement. 20-35 labor hours for full engine rebuild, 12-18 hours for longblock swap. AFM delete kit during repair is mandatory to prevent recurrence.
Estimated cost: $4,500-$8,500
Transmission Oil Cooler Line Failure and Cross-Contamination
Common · high severity
Typical onset: 70,000-120,000 mi
Symptoms: Transmission fluid in coolant reservoir (strawberry milkshake appearance), Coolant in transmission causing slipping, delayed engagement, Overheating transmission or engine temperature spikes, Harsh or erratic shifting before complete failure
Fix: Internal transmission cooler in radiator fails, mixing coolant and ATF. Requires radiator replacement, external cooler installation, complete transmission flush or rebuild if contamination occurred. If caught early (fluid flush only): 4-6 hours. If transmission damaged: 12-18 hours for rebuild.
Symptoms: Burning 1+ quart of oil every 1,000-2,000 miles, Blue smoke from exhaust on startup or acceleration, Fouled spark plugs requiring frequent replacement, Low oil pressure warnings if level drops critically
Fix: Piston rings wear or carbon-lock in grooves, particularly on AFM-equipped engines. Requires engine disassembly, new rings, cylinder honing, often pistons if scoring present. 18-28 labor hours depending on block condition.
Estimated cost: $3,800-$6,500
Transmission Mount Failure
Common · medium severity
Typical onset: 60,000-100,000 mi
Symptoms: Clunk when shifting from Park to Drive or Reverse, Excessive vibration at idle in gear, Visible transmission sag or movement when shifting, Drivetrain shudder during acceleration
Fix: Rubber deteriorates in transmission crossmember mount, allowing excessive movement. Replacement is straightforward: support transmission, remove crossmember, replace mount. 1.5-2.5 hours labor.
Estimated cost: $250-$450
Air Conditioning Compressor Failure
Occasional · low severity
Typical onset: 90,000-140,000 mi
Symptoms: Loud grinding or squealing from serpentine belt area, AC blows warm air or cycles on/off rapidly, Compressor clutch won't engage or stays engaged constantly, Metal debris visible in refrigerant when gauges attached
Fix: Compressor bearings fail or clutch seizes. Requires compressor replacement, full system flush to remove debris, receiver-drier and expansion valve replacement to prevent contamination damage. 4-6 hours labor including evacuation and recharge.
Estimated cost: $1,200-$1,800
Throttle Body Carbon Buildup and Idle Issues
Common · low severity
Typical onset: 50,000-90,000 mi
Symptoms: Rough or fluctuating idle, especially when cold, Hesitation or stumble on initial acceleration, Check engine light with P0506 (idle too low) or P0507 (idle too high), Stalling when coming to a stop
Fix: Carbon deposits restrict airflow past throttle blade. Remove throttle body, clean with throttle body cleaner, perform idle relearn procedure with scanner. 1-1.5 hours labor.
Estimated cost: $150-$280
Owner tips
Disable AFM with a Range Technology device or similar at purchase to prevent lifter failure—$400 now saves $6,000 later
Install auxiliary transmission cooler immediately and bypass factory radiator-mounted cooler to prevent cross-contamination
Check transmission and coolant fluids every oil change for signs of mixing—early detection is critical
Use quality full-synthetic oil and change every 5,000 miles maximum to combat AFM wear and carbon buildup
Budget $500-800/year for deferred maintenance if buying above 100,000 miles—these are expensive to neglect
Buy only if AFM has been deleted and auxiliary trans cooler installed, or budget $5,000-7,000 for inevitable powertrain work—otherwise solid truck that's maintenance-intensive.
AI-assisted summary drawn from NHTSA recall data, our labor-times database, and platform knowledge. Not a substitute for a pre-purchase inspection on a specific vehicle.
Fitment notes: Side post terminals standard on GM vehicles; battery located under hood on passenger side
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Every control module on the 2008-2014 GMC Yukon — where it lives, replacement time, and what it takes to program a replacement. Modules marked dealer / factory tool won't work after a part swap alone — budget for programming.
📍 6L80/6L90 transmissions: integrated with valve body inside transmission as TEHCM (Transmission Electro-Hydraulic Control Module); 4L60E/4L65E: external on driver side of transmission case
🔧 GM SPS via Tech 2 or MDI
⚠️ TEHCM (6-speed) requires transmission pan removal and fluid service. VIN and calibration programming required.
Body Control Module (BCM)2.0 hr R&Rdealer / factory tool +1.0 hr▸ programming details
📍 Behind center of instrument panel, above center console, mounted to HVAC plenum bracket
🔧 GM SPS via Tech 2 or MDI
⚠️ Controls lighting, door locks, remote start, accessory power. Requires extensive configuration for options and theft deterrent relearn.
📍 Engine compartment, driver side frame rail near master cylinder, integrated with ABS hydraulic unit
🔧 GM SPS via Tech 2 or MDI
⚠️ Controls ABS, traction control, StabiliTrak. Brake bleeding required after replacement. Configuration for wheel size and axle ratio.
Door Control Module (DCM)1.5 hr R&Rdealer / factory tool +0.3 hrwith memory seats and/or power-folding mirrors▸ programming details
📍 Inside driver and passenger front doors, behind door trim panel
🔧 GM SPS via Tech 2 or MDI
⚠️ Controls door locks, windows, mirrors, memory functions. Separate modules for driver and passenger doors on equipped models.
Electric Power Steering Control Module (EPSCM)1.5 hr R&Rdealer / factory tool +0.3 hr2009-2014 models with electric power steering (replaced hydraulic mid-2009 model year)▸ programming details
📍 Mounted to steering column jacket, below instrument panel
🔧 GM SPS via Tech 2 or MDI
⚠️ Not present on early 2008-2009 models with hydraulic steering. Steering angle sensor calibration required after replacement.
📍 Behind driver side rear interior trim panel, near D-pillar
🔧 GM SPS via Tech 2 or MDI
⚠️ Requires OnStar account activation and VIN programming. Contains cellular modem and GPS.
Rear Vision Camera Module (RVCM)0.5 hr R&Rrelearn only +0.2 hrwith rear vision camera (standard 2012+, optional earlier)▸ programming details
📍 Integrated with liftgate handle assembly, center of liftgate
🔧 Tech 2 or MDI for calibration
⚠️ Camera calibration and aiming may be required. Simple relearn procedure available.
Aftermarket tool coverage varies by software version and vehicle build — treat "aftermarket tool" rows as "usually possible" and verify against your tool maker's coverage list before promising a customer. Spot a wrong location or hour? Tell us — corrections ship fast here.
AIR BAGS:FRONTAL:PASSENGER SIDE:INFLATOR MODULE · 21V054000
2021-02-05 · EA15001
General Motors, LLC (GM) is recalling certain 2014 Cadillac Escalade, Escalade ESV, Chevrolet Silverado 2500, Silverado 3500, Suburban, Tahoe, GMC Sierra 2500, Sierra 3500, Yukon, and Yukon XL vehicles originally sold, or ever registered, in the states of AL, CA, FL, GA, HI, LA, MS, SC, TX, PR, AS, GU, the MP, and VI or "Zone A."
Additionally GM is recalling certain 2011-2014 Cadillac Escalade, Escalade ESV, Chevrolet Silverado 2500, Silverado 3500, Suburban, Tahoe, GMC Sierra 2500, Sierra 3500, Yukon, Yukon XL and 2011-2013 Cadillac Escalade EXT, Chevrolet Avalanche, Silverado 1500, and GMC Sierra 1500 vehicles originally sold, or ever registered, in the states of AZ, AR, DE, DC, IL, IN, KS, KY, MD, MO, NE, NV, NJ, NM, NC, OH, OK, PA, TN, VA, and WV or "Zone B."
Additionally, GM is recalling certain 2010-2014 Cadillac Escalade, Escalade ESV, Chevrolet Silverado 2500, Silverado 3500, Suburban, Tahoe, GMC Sierra 2500, Sierra 3500, Yukon, and Yukon XL and 2010-2013 Cadillac Escalade EXT, Chevrolet Avalanche, Silverado 1500, and GMC Sierra 1500 vehicles originally sold, or ever registered, in the states of AK, CO, CT, ID, IA, ME, MA, MI, MN, MT, NH, NY, ND, OR, RI, SD, UT, VT, WA, WI, and WY or "Zone C."
These vehicles are equipped with non-desiccated passenger frontal inflators containing phase-stabilized ammonium nitrate (PSAN) propellant. These inflators may explode due to propellant degradation occurring after long-term exposure to high absolute humidity, high temperatures, and high temperature cycling.
Consequence: An inflator explosion may result in sharp metal fragments striking the driver or other occupants, resulting in serious injury or death.
Remedy: GM will notify owners, and dealers will replace the front passenger air bag inflator with an alternate one, free of charge. Interim letters notifying owners of the safety risk were mailed on February 25, 2021. Second notification letters will be mailed once the remedy is available. Owner notification letters were mailed to 40 VIN owners on May 11, 2021. A second owner notification letter was mailed to all other owners on January 24, 2022. Owners may contact Chevrolet customer service at 1-800-222-1020; Cadillac customer service at 1-800-458-8006; and GMC customer service at 1-800-462-8782. GM's number for this recall is N212328800.
ELECTRICAL SYSTEM · 14V614000
2014-10-01
General Motors LLC (GM) is recalling certain model year 2013-2014 Cadillac CTS, Escalade, Escalade ESV, Chevrolet Suburban, Tahoe, GMC Yukon, and Yukon XL, and 2014 Buick Enclave, Chevrolet Express, Impala, Silverado HD, Traverse, GMC Acadia, Savana, and Sierra HD vehicles. In the affected vehicles, the chassis electronic module may be internally contaminated, resulting in an electrical short.
Consequence: If the module experiences an electrical short, the vehicle could stall, increasing the risk of a crash.
Remedy: GM will notify owners, and dealers will replace the chassis electronic module, free of charge. The recall began on December 26, 2014. Owners may contact GM customer service at 1-800-521-7300 (Buick), 1-800-458-006 (Cadillac), 1-800-222-1020 (Chevrolet), and 1-800-462-8782 (GMC). GMs number for this recall is 14515.
SERVICE BRAKES, HYDRAULIC · 13V342000
2013-08-06
General Motors is recalling certain model year 2014 Chevrolet Suburban vehicles manufactured July 9, 2013, through July 22, 2013; and 2014 Chevrolet Tahoe vehicles manufactured July 16, 2013, through July 23, 2013; and model year 2014 GMC Yukon vehicles manufactured July 13, 2013, through July 18, 2013; and model year 2014 GMC Yukon XL vehicles manufactured on July 22, 2013. The rear brake caliper bolts may not be fully tightened. Thus, these vehicles fail to conform to the requirements of Federal Motor Vehicle Safety Standard (FMVSS) No. 135, "Light Vehicle Brake Systems."
Consequence: Loose caliper bolts may cause reduced braking performance and result in lengthened stopping distances, increasing the risk of a crash.
Remedy: GM will notify owners, and dealers will inspect the bolts on both rear brake caliper brackets. Any bolts found loose will be replaced and tightened. This service will be performed, at no charge. Owners may contact Chevrolet at 1-800-222-1020 and GMC at 1-800-462-8782. GM's recall number is 13247.
Fuel economy (EPA)
City
15mpg
Highway
21mpg
Combined
17mpg
Fuel
Regular Gasoline
Capability & size
EPA class
Standard Sport Utility Vehicle 2WD
Wiper blades
GMT900 generation (2007-2014). Standard full-size SUV does not have rear wiper.
Size-standard part numbers — verify your connector type before buying. Rear blades are model-specific; check the package's vehicle list.
Fuel economy figures are EPA data via fueleconomy.gov (median across matching trims). Performance figures are compiled estimates for the 2014 GMC Yukon 5.3L V8 and can vary by trim.
🔧 Database maintained under the daily editorial review of Chris Hackleman · Master Technician · 20+ years and Jeff Moore · Master Lexus & Toyota Mechanic · 20+ years.