2018 GMC Sierra 2500HD Reliability - Consumer Reports
The Sierra 2500 HD (for 'heavy duty') and its near twin Chevrolet Silverado 2500 are true rough and tumble workhorses, but with enough creature comforts and modern amenities, they serve as versatile mobile workplaces. High points include a diesel powertrain that's cultured and brawny, and an intuitive infotainment system. However, for day-to-day comfort, we'd avoid the super-stiff Z71 suspension.
Alerts
There are 3 recalls on this vehicle. Learn More.

Reliability

We expect the 2022 Sierra 2500HD will be more reliable than the average new car. This prediction is based on data from 2020 and 2021 models. Select the used car model year to see reported issues with those similar past models.

Overall Reliability
Most Common Trouble Spots
Common Trouble Spot
Common Trouble Spot
The 2018 GMC Sierra 2500HD has been recalled 3 times by NHTSA. View Recalls
Research Years * Redesign year
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Overall Reliability Verdict
NA
NA
NA
NA
POTENTIAL TROUBLE SPOTS
Engine Major
NA
NA
NA
NA
Engine Minor
NA
NA
NA
NA
Engine Cooling
NA
NA
NA
NA
Transmission Major
NA
NA
NA
NA
Transmission Minor
NA
NA
NA
NA
Drive System
NA
NA
NA
NA
Fuel System
NA
NA
NA
NA
Electric System
NA
NA
NA
NA
Climate System
NA
NA
NA
NA
Suspension
NA
NA
NA
NA
Brakes
NA
NA
NA
NA
Exhaust
NA
NA
NA
NA
Paint/Trim
NA
NA
NA
NA
Body Integrity
NA
NA
NA
NA
Body Hardware
NA
NA
NA
NA
Power Equipment
NA
NA
NA
NA
In-car Electronics
NA
NA
NA
NA
Reliability indicates how models have performed in the past, providing the basis for predicting how the vehicles will hold up in the year ahead. These charts provide the most comprehensive reliability information available to consumers. Based on information received from our latest subscriber survey for over 300,000 vehicles, our reliability history charts give you a rundown on how 2000 through 2021 vehicles are holding up in 17 potential trouble spots, ranging from the engine, transmission, and brakes to power equipment and the electrical system. NA indicates that we did not receive a large enough sample size to provide data for a specific year. An X indicates that the vehicle was not manufactured for a specific year.

Learn more about car Reliability.

Owner Reported Trouble Spots

The Reliability score is based on our latest subscriber survey of 2018 GMC Sierra 2500HD owners. The owner comments describe problems respondents experienced with this vehicle.

Body Integrity

Squeaks, rattles, wind noises, loose or cracked seals and/or weather-stripping, air and water leaks.

What Owners Say

Air or water leaks

"The windshield was not 100 percent sealed. It was fixed and all was fine since."

Anonymous, PA (2018 GMC Sierra 2500HD SLE 6.6-L V8 diesel)

"There was a water leak on the roof antenna when ot rains. This has been corre ted by the Dealer."

Daniel M., CA (2018 GMC Sierra 2500HD Denali 6.6-L V8 diesel)
Seals and/or weather-stripping

"This was the same....windshield seal"

Anonymous, PA (2018 GMC Sierra 2500HD SLE 6.6-L V8 diesel)
Squeaks or rattles

"The passenger seats (front and rear) rattle when they're unoccupied. Although, the brakes were new, there was a frequent front wheel squeak when the brakes were applied."

Benjamin D., CA (2018 GMC Sierra 2500HD Denali 6.6-L V8 diesel)

Electric System

Alternator, starter, hybrid battery and related systems, regular battery, battery cables, engine harness, coil, ignition switch, electronic ignition, distributor or rotor failure, spark plugs and wires failure.

What Owners Say

Exterior lights (other than headlights)

"Fog lamps went out, very hard to replace. Must remove front bumper"

Anonymous, TX (2018 GMC Sierra 2500HD Denali 6.6-L V8 diesel)

"Turn indicator light bulb burned out"

Anonymous, (2018 GMC Sierra 2500HD SLT 6.6-L V8 diesel)
Gauges

"The light sensing system reverts to night time driving if you are in a shaded area and it takes way to long when in the sunlight for the gauges and nav system to return to normal. It takes 20 or more seconds if you return to full sunlight."

Daniel M., CA (2018 GMC Sierra 2500HD Denali 6.6-L V8 diesel)
Interior lights

"The light that illuminates the climate control buttons would turn off intermittently. When I took it to the dealer, it worked perfectly. However, most of the time the button is not lit."

Anonymous, CA (2018 GMC Sierra 2500HD Denali 6.6-L V8 diesel)

In-car Electronics

CD or DVD players, radio, speakers, GPS, communication system (e.g., OnStar), display screen freezes or goes blank, phone pairing (e.g. Bluetooth), voice control commands, steering wheel controls, portable music device interface (e.g., iPod/MP3 player), backup or other camera/sensors.

What Owners Say

Radio

"Poor/intermittent XM radio reception"

Anonymous, GA (2018 GMC Sierra 2500HD Denali 6.6-L V8 diesel)

Climate System

Blower (fan) motor, A/C compressor, condenser, evaporator, heater system, automatic climate control, refrigerant leakage, electrical failure.

What Owners Say

Automatic climate control

"Ac did not cool with auto set"

Steven M., LA (2018 GMC Sierra 2500HD Denali 6.6-L V8 diesel)

Paint/Trim

Paint (fading, chalking, cracking, or peeling), loose interior and exterior trim or moldings, rust.

What Owners Say

Rust

"Running boards are pitting (chrome). Will get them replaced under warranty."

Jonathan H., ME (2018 GMC Sierra 2500HD Denali 6.6-L V8 diesel)

Transmission Minor

Gear selector or linkage, leaks, transmission computer, transmission sensor or solenoid, clutch adjustment, rough shifting, slipping transmission.

What Owners Say

Rough shifting

"Sometimes downshifts abruptly when slowing down from 3rd gear. I have an appointment with the dealership in two days."

Anonymous, (2018 GMC Sierra 2500HD SLT 6.6-L V8 diesel)

Exhaust

Muffler, pipes, catalytic converter, exhaust manifold, leaks.

What Owners Say

Exhaust leaks

"Exhaust smell in cabin when stopped and idling."

Anonymous, CO (2018 GMC Sierra 2500HD SLT 6.6-L V8 diesel)

Drive System

Driveshaft or axle, CV joint, differential, transfer case, 4WD/AWD components, driveline vibration, traction control, electronic stability control (ESC), electrical failure.

What Owners Say

Electrical failure

"Ac control not working"

Steven M., LA (2018 GMC Sierra 2500HD Denali 6.6-L V8 diesel)

Engine Cooling

Radiator, cooling fan, antifreeze leaks, water pump, thermostat, overheating.

What Owners Say

Antifreeze leaks

"Broken and leaking main radiator hose"

Anonymous, CA (2018 GMC Sierra 2500HD Denali 6.6-L V8 diesel)

Brakes

Antilock system (ABS), parking brake, master cylinder, calipers, rotors, pulsation or vibration, squeaking, brake failure or wear.

Engine Minor

Accessory belts and pulleys, engine computer, engine mounts, engine knock or ping, oil leaks.

Engine Major

Engine rebuild or replacement, cylinder head, head gasket, turbo or supercharger, timing chain or timing belt.

Power Equipment

Cruise control, clock, warning lights, body control module, keyless entry, wiper motor or washer, tire pressure monitor, interior or exterior lights, horn, gauges, 12V power plug, remote engine start, alarm or security system

Fuel System

Check engine light, sensors (includes O2 or oxygen sensor), emission control devices (includes EGR), engine computer, engine computer, fuel cap, fuel gauge/sender, fuel injection system, fuel pump, fuel leaks, stalling or hesitation.

Body Hardware

Power or manual windows, locks and latches, tailgate, hatch or trunk, doors or sliding doors, mirrors, seat controls, safety belts, sunroof, convertible top.

Suspension

Shocks or struts, ball joints, tie rods, wheel bearings, alignment, steering linkage (includes rack and pinion), power steering (pumps and hoses, leaks), wheel balance, springs or torsion bars, bushings, electronic or air suspension.

Compare 2018 Models

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This score shows whether the model had more or fewer problems overall than the average model of that year, calculated from the total number of problems reported by subscribers in all 17 trouble spots.
Recalls
PROVIDED BY
EQUIPMENT
Jul 01, 2021
An electrical short-circuit can increase the risk of a fire.
Summary:
General Motors, LLC (GM) is recalling certain 2017-2019 Chevrolet Silverado 2500, 3500 and 2017-2019 GMC Sierra 2500 and 3500 vehicles equipped with a Duramax diesel 6.6 liter engine and an optional engine-block heater cord. An electrical short-circuit may occur in the engine-block heater cable or in the terminals that connect the heater cable to the block heater.
What should you do:
Dealers will replace engine block heaters and heater cords. Vehicles that have this feature disabled as a remedy to the safety condition will be contacted and offered replacement block heaters and heater cords under a separate customer satisfaction program, free of charge. GM will provide free replacement block heaters and cords under a separate customer satisfaction campaign. For vehicles previously included in recall 19V-328, the heater cord will be replaced and rerouted, free of charge. Interim owner notifications were mailed on August 13, 2021. Owners may contact Chevrolet customer service at 1-800-222-1020; and GMC customer service at 1-800-462-8782. GM's number for this recall is 212329840.
For more information:
Owners may also contact the National Highway Traffic Safety Administration Vehicle Safety Hotline at 1-888-327-4236 (TTY 1-800-424-9153), or go to www.nhtsa.gov.
NHTSA CAMPAIGN ID Number: 21V496000
Potential Number of Units Affected: 338020
ENGINE
Apr 25, 2019
A short-circuit may damage the engine components and increase the risk of fire.
Summary:
General Motors LLC (GM) is recalling certain 2019 Chevrolet Silverado 4500, 5500 and 6500 vehicles and 2017-2019 Chevrolet Silverado 2500 and 3500 vehicles and GMC Sierra 2500 and 3500 vehicles equipped with Duramax 6.6 liter diesel engines and an optional engine-block heater. The engine block heater cord or the terminals that connect the heater cord to the block heater may short circuit and fail.
What should you do:
GM will contact owners, dealers will replace the engine block heater, free of charge. Additionally, in Chevrolet Silverado 2500 and 3500 vehicles, dealers will install a new rerouted heater cord. The recall began December 11, 2019. Owners may contact GM customer service at 1-586-596-1733. GM's number for this recall is N182206310.
For more information:
Owners may also contact the National Highway Traffic Safety Administration Vehicle Safety Hotline at 1-888-327-4236 (TTY 1-800-424-9153), or go to www.safercar.gov.
NHTSA CAMPAIGN ID Number: 19V328000
Potential Number of Units Affected: 318374
SEAT BELTS
Sep 14, 2017
The seat belt retractors may not perform as intended during a crash, increasing the risk of injury.
Summary:
General Motors (GM) is recalling certain 2017-2018 Chevrolet Silverado 2500 and 3500 and GMC Sierra 2500 and 3500 trucks. The front seat belt retractor assemblies were built with the incorrect torsion bar. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard number 209, "Seat Belt Assemblies."
What should you do:
GM will notify owners, and dealers will replace both front seat belt retractor assemblies, free of charge. The recall began March 24, 2021. Owners may contact GMC customer service at 1-888-988-7267 or Chevrolet customer service at 1-800-222-1020. GM's numbers for this recall are 17368, 17375, and 17376.
For more information:
Owners may also contact the National Highway Traffic Safety Administration Vehicle Safety Hotline at 1-888-327-4236 (TTY 1-800-424-9153), or go to www.safercar.gov.
NHTSA CAMPAIGN ID Number: 17V567000
Potential Number of Units Affected: 38048
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