Exhaust
Muffler, pipes, catalytic converter, exhaust manifold, heat shields, leaks.
What Owners Say
"DEF SENDING UNIT"
Anonymous, FL (2018 GMC Sierra 2500HD Denali 6.6-L V8 diesel)
2018
GMC Sierra 2500HD
EPA MPG:
NA
EPA MPG:
NA
RECALL ALERT:
There are 5 recalls on this vehicle.
Learn More.
Reliability
Overall Reliability
We expect the 2025 Sierra 2500HD will have about average reliability when compared to the average new car. This prediction is based on data from 2022 and 2024 models.
Most Common Trouble Spots
Common Trouble Spot
Common Trouble Spot
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.
Suspension/Steering
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.
What Owners Say
"Power Steering Pump needed replaced"
Anonymous, CO (2018 GMC Sierra 2500HD SLT 6.0-L V8)Transmission Major
Transmission rebuild or replacement, torque converter, premature clutch replacement.
Fuel System/Emissions
Sensors (O₂, or oxygen, sensor), emission-control devices (includes EGR), fuel-injection system, fuel gauge/sender, fuel pump, problems filling up the tank.
Drive System
Driveshaft or axle, CV joint, differential, transfer case, four-wheel-drive/all-wheel-drive components, driveline vibration, electrical failure, traction control, electronic stability control.
Brakes
Premature pad/rotor wear, pulsation or vibration, antilock system, parking brake, master cylinder, calipers, squeaking, brake failure, regenerative braking.
Climate System
AC compressor, blower (fan) motor, condenser, evaporator, heater system, automatic climate system, electrical failure, refrigerant leakage.
Engine Electrical
Alternator, starter, hybrid battery replacement, hybrid battery related systems, regular battery, battery cables, engine harness, coil, ignition switch, electronic ignition, spark plugs and wires failure, auto stop/start.
Engine Major
Engine rebuild or replacement, cylinder head, head gasket, turbocharger or supercharger, timing chain or belt.
In-car Electronics
Infotainment system (audio, GPS, phone), rear entertainment system, backup or other camera/sensors, head-up display.
Noises/Leaks
Squeaks, rattles, wind noises, seals and/or weather stripping, air and water leaks.
Engine Minor
Accessory belts and pulleys, engine computer, engine mounts, engine knock or ping, fuel leaks, oil leaks.
Paint/Trim
Paint (fading, chalking, peeling, or cracking), loose interior or exterior trim or moldings, rust.
Engine Cooling
Radiator, cooling fan, water pump, thermostat, antifreeze leaks, overheating.
Electrical Accessories
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, USB ports, alarm or security system, remote engine start, heated or cooled seats, heated steering wheel, headlights, automatic headlights, automatic wipers, wireless charging pad.
Body Hardware
Windows, locks and latches, doors or sliding doors, tailgate, trunk or hatch, mirrors, seat controls (power or manual), seat belts, sunroof, convertible top, glass defect.
Transmission Minor
Gear selector and linkage, transmission computer, transmission sensor or solenoid, clutch adjustment, rough shifting, slipping transmission, leaks.
2018 Pickup trucks Reliability
This Car
0
100
GMC vs. Other New Car Brands Reliability
Overall Reliability Verdict
POTENTIAL TROUBLE SPOTS
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 2024 vehicles are holding up in 20
potential trouble spots, ranging from the engine, transmission, electric motor, EV charging, and
brakes to power equipment and the electrical accessories.
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.
Recalls
PROVIDED BY
AIR BAGS
Oct 10, 2024
A separated inflator end cap or inflator rupture can allow compressed gas to escape, resulting in the end cap or other components being propelled into the vehicle, increasing the risk of injury or crash.
Summary:
General Motors, LLC (GM) is recalling certain 2018 Chevrolet Silverado 1500, GMC Sierra 1500, 2018-2019 Chevrolet Silverado 2500, 3500, and GMC Sierra 2500, 3500 Crew Cab trucks. The left or right-side roof-rail air bag (RRAB) inflator end cap may detach from the inflator or the inflator sidewall may rupture.
What should you do:
Dealers will replace the left and right side RRAB modules, free of charge. Owner notification letters were mailed November 8, 2024. Owners may contact Chevrolet customer service at 1-800-222-1020, and GMC Customer Service at 888-988-7267. GM's number for this recall is N242474500.
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 nhtsa.gov.
NHTSA CAMPAIGN ID Number:
24V756000
Potential Number of Units Affected:
2061
FUEL SYSTEM, DIESEL
Feb 02, 2023
An engine stall increases the risk of a crash.
Summary:
General Motors, LLC (GM) is recalling certain 2017-2019 Chevrolet Silverado 2500, 3500, and GMC Sierra 2500, 3500 vehicles equipped with a dual fuel tank option. The rear fuel tank may collapse and prevent the fuel pump from transferring fuel to the front tank, resulting in an engine stall.
What should you do:
Dealers will inspect the fuel tank and fuel pump module, replacing them as necessary. Dealers will also add a vent hose to the rear tank assembly. Repairs will be performed free of charge. An interim owner notification letter informing owners of the safety risk was mailed on March 15, 2023. Owner notification letters were mailed June 21, 2023. Owners may contact Chevrolet customer service at 1-800-222-1020 or GMC customer service at 1-800-462-8782. GM's number for this recall is N222368030.
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:
23V047000
Potential Number of Units Affected:
22132
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. Owner notification letters are expected to be mailed on April 4, 2022. Customers may call 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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"Check engine light came on. Turned out to be programming in engine controller which was not covered. I would think that faulty programming would not be a charge of over $400"
Anonymous A., TX (2018 GMC Sierra 2500HD Denali 6.6-L V8 diesel)