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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.
The Reliability score is based on our latest subscriber survey of 2008 GMC Sierra 2500HD owners. The owner comments describe problems respondents experienced with this vehicle.
Paint (fading, chalking, peeling, or cracking), loose interior or exterior trim or moldings, rust.
"Clear coat failed all over the driver side , front fender,doors, rear fender very early on"
Anonymous A., NJ (2008 GMC Sierra 2500HD SLT 6.0-L V8)Sensors (O₂, or oxygen, sensor), emission-control devices (includes EGR), fuel-injection system, fuel gauge/sender, fuel pump, problems filling up the tank.
"DPF code put Vehicle into "Safe Mode""
Anonymous A., FL (2008 GMC Sierra 2500HD SLT 6.6-L V8 diesel)Muffler, pipes, catalytic converter, exhaust manifold, heat shields, leaks.
Gear selector and linkage, transmission computer, transmission sensor or solenoid, clutch adjustment, rough shifting, slipping transmission, leaks.
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.
AC compressor, blower (fan) motor, condenser, evaporator, heater system, automatic climate system, electrical failure, refrigerant leakage.
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.
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.
Driveshaft or axle, CV joint, differential, transfer case, four-wheel-drive/all-wheel-drive components, driveline vibration, electrical failure, traction control, electronic stability control.
Infotainment system (audio, GPS, phone), rear entertainment system, backup or other camera/sensors, head-up display.
Transmission rebuild or replacement, torque converter, premature clutch replacement.
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.
Squeaks, rattles, wind noises, seals and/or weather stripping, air and water leaks.
Premature pad/rotor wear, pulsation or vibration, antilock system, parking brake, master cylinder, calipers, squeaking, brake failure, regenerative braking.
Radiator, cooling fan, water pump, thermostat, antifreeze leaks, overheating.
Accessory belts and pulleys, engine computer, engine mounts, engine knock or ping, fuel leaks, oil leaks.
Engine rebuild or replacement, cylinder head, head gasket, turbocharger or supercharger, timing chain or belt.
"Body side molding would keep falling off the doors"
Anonymous A., NJ (2008 GMC Sierra 2500HD SLT 6.0-L V8)