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2018 GMC Sierra 2500HD

Heavy-duty pickup
0 EPA-rated configurations
Data refreshed 2026-10-26

Safety Signal

52 / 100 from the NHTSA recall record

Counts recalls, not crash safety — this vehicle earned 4 of 5 stars from NHTSA. A much-recalled best-seller scores low here; see the methodology.

Recalls3 critical 5

Complaints2 fire reported 35

Crash ratingNHTSA overall 4★

2026 2025 2024 2023 2022 2021 2020 2019 2018 2017 2016

The 2018 GMC Sierra 2500HD is a pickup truck; vehicles over 8,500 lb GVWR are not certified for fuel economy by the EPA, so this page is built from NHTSA's recall, complaint and investigation records. NHTSA lists 5 recall campaigns for this model year, 3 rated critical, which gives it a Safety Signal grade of F. Owners have filed 35 complaints, most often about the engine. NHTSA crash-tested it at 4 stars overall.

GMC Sierra — photograph via Wikimedia Commons — GMC Sierra · Photo: Ethan Llamas · CC BY-SA 4.0 · Wikimedia Commons

Specs & fuel economy

Source: EPA fueleconomy.gov

No EPA fuel-economy record: the EPA does not certify vehicles over 8,500 lb GVWR. Recall, complaint and investigation data below come from NHTSA.

Specifications filed with NHTSA

Source: NHTSA vPIC

Dimensions Exterior

Body style	Pickup
Doors	4
GVWR class	Class 2H: 9,001 - 10,000 lb (4,082 - 4,536 kg)

Engine Basics

Cylinders	8
Displacement	6 L
Engine configuration	V-Shaped

Fuel Economy

Fuel	Gasoline

Transmission

Drivetrain

4x2

Filed by the manufacturer with NHTSA under the federal vehicle-identification rule and decoded from the VIN pattern — not a manufacturer press kit, so it describes the configurations we could identify rather than every trim (seen: Denali, Fleet/Base, SLE, SLT). Figures for the trim you are looking at may differ.

Dimensions & weight

Source: Transport Canada

Length	220.1–254.3 in
Width (body, without mirrors)	79.9 in
Height	78.0–78.3 in
Wheelbase	133.5–167.7 in
Track, front	68.9 in
Track, rear	67.7 in
Curb weight	5,631–6,594 lb

Measured by Transport Canada for its Canadian Vehicle Specifications database, which covers the North American versions of each model — here 11 configurations: Crew Cab L/Box 2WD, Crew Cab L/Box 4X4, Crew Cab M/Box 2WD, Crew Cab M/Box 4X4, Crew Cab M/Box 4X4 Denali, Double Cab L/Box 2WD …. Where a range is shown, those versions differ. Width is the body without mirrors, which is why it can read narrower than a brochure figure. Before we used it we checked it against the US manufacturer press kits we hold (27 Sep 2026): wheelbase agreed within 1% on every vehicle we could compare, length on 98%, and the curb weight fell inside the manufacturer's range on 96%. Source dataset. Contains information licensed under the Open Government Licence – Canada. Licence.

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Recalls (5)

Source: NHTSA recall database

!critical

Air Bags

N242474500

2,061 vehicles 54% reported repaired

Problem 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. Risk 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. Fix 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.

Filed with NHTSADefect report PDF Owner letter PDF Remedy instructions PDF

NHTSA campaign 24V756000 reported Oct 10, 2024 General Motors, LLC the full filing, and every vehicle covered →

▲high

Fuel System, Diesel

N222368030

22,132 vehicles 63% reported repaired

Problem 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. Risk An engine stall increases the risk of a crash. Fix 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

Filed with NHTSADefect report PDF Owner letter PDF Remedy instructions PDF

NHTSA campaign 23V047000 reported Feb 2, 2023 General Motors, LLC the full filing, and every vehicle covered →

!critical

Equipment

N212329840

338,020 vehicles 81% reported repaired

Problem 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. Risk An electrical short-circuit can increase the risk of a fire. Fix 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. In

Filed with NHTSADefect report PDF Owner letter PDF

NHTSA campaign 21V496000 reported Jul 1, 2021 General Motors, LLC the full filing, and every vehicle covered →

!critical

Engine

N182206310, -11, -12

318,374 vehicles 100% reported repaired built Jul 16, 2016 – Apr 18, 2019

Problem 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. Risk A short-circuit may damage the engine components and increase the risk of fire. Fix 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.

Filed with NHTSAOwner letter PDF

NHTSA campaign 19V328000 reported Apr 25, 2019 General Motors LLC the full filing, and every vehicle covered →

▲high

Seat Belts

17368, 17375, 17376

38,048 vehicles 70% reported repaired

Problem 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." Risk The seat belt retractors may not perform as intended during a crash, increasing the risk of injury. Fix 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.

Filed with NHTSAOwner letter PDF

NHTSA campaign 17V567000 reported Sep 14, 2017 General Motors LLC the full filing, and every vehicle covered →

These are vehicle campaigns — the ones the automaker filed against this model. NHTSA also records equipment recalls, filed by a parts maker against a component (a tyre, a child seat, an aftermarket part), and those are not listed here or counted above. nhtsa.gov/recalls shows both for a VIN.

Whether any of this applies to one specific Sierra 2500HD

A campaign covers a build range, not a model year, so two identical-looking cars from 2018 can differ. Both of these check a VIN against the manufacturer’s own list, free, in about ten seconds. GMC publishes its own lookup because federal rule 49 CFR 573.15 requires it to, and to keep it current to within seven days.

NHTSA VIN check →GMC’s own VIN lookup →

Hear about a recall before the letter does

The manufacturer’s letter is the last step of a recall: it has up to 60 days after filing to mail owners, at the address on the registration. We email you the day NHTSA posts a recall on the 2018 GMC Sierra 2500HD, with what to do next. Nothing else, ever — no newsletter, no marketing, one-click unsubscribe in every message.

Owner complaints

Source: NHTSA complaint database

35complaints filed

0 involved a crash · 2 a fire · 0 injuries · 0 deaths reported

7.9 per 10,000 built · GMC reported 44,366 Sierra 2500HD built (its Early Warning production report to NHTSA)

Filed per year: 2018: 4 · 2019: 5 · 2020: 4 · 2021: 7 · 2022: 5 · 2023: 6 · 2024: 2 · 2025: 1 · 2026: 1

Most-cited components

Engine 8

Electrical System 7

Fuel/Propulsion System 6

Unspecified 5

Exterior Lighting 4

Equipment 4

In owners' own words

Filed with NHTSA by the people who own these cars, one per problem area. Quoted as written, with anything identifying removed.

I have a 2018 GMC Sierra Duramax Quad-Cab and when it is connected to either my boat, stock trailer, or cargo trailer the lights and electric trailer brakes on the trailers do not work.

Exterior Lighting Feb 23, 2023 NHTSA owner report · ODI 11508714

Water leak, known in other years of the same model vehicle, caused the rear defrost to fail and smoke when in operation nearly causing a fire in the vehicle as it was being operated

Electrical System Nov 2, 2022 NHTSA owner report · ODI 11491986

2018 Gmc Sierra 2500. Consumer writes in regard to transmission cooler lines recall. The consumer stated the vehicle began leaking fluid. The vehicle was taken to the dealer to have the vehicle repaire, which could not be done the same day.

Power Train Jul 15, 2022 NHTSA owner report · ODI 11474048

2018 Gmc Sierra 2500 hd. Consumer writes in regards to acceleration issues. The consumer stated the vehicle displayed warning lights. And began shaking. The vehicle became difficult to accelerate. The dealer informed the consumer that number 4 injector was the cause of the failure. The vehicle was repaired.

Engine Feb 14, 2022 NHTSA owner report · ODI 11451874

The contact owns a 2018 GMC Sierra 2500. The contact received notification of NHTSA Campaign Number: 21V496000 (Equipment) however, the part to do the recall repair was not yet available. The local dealer was contacted and it was confirmed that parts were not yet available.

Equipment Feb 9, 2022 NHTSA owner report · ODI 11451143

LT265 60 R20 Goodyear Wrangler SR-A tire experienced a tread separation while traveling at 68 MPH. This resulted in significant vibration in the steering. This tire was inspected at a tire shop and the tread separation was confirmed. The tire still had 7/32 of tread left at the time of the failure.

Tires Aug 23, 2021 NHTSA owner report · ODI 11430187

Complaint counts are raw owner reports to NHTSA, not verified defects, and scale with how many were sold. Use them to spot patterns, not to rank.

Reported by GMC itself: 13 death-or-injury claims on this model year in its quarterly Early Warning reports to NHTSA (49 CFR 579.21): 2 killed, 14 injured, as claimed, not verified — about 29 per 100,000 built. Every Sierra 2500HD model year, by year and system → Dated and by system, they are exhibit F of the defect dossier.

When owners reported it

Reported at 8k

miles, typically

Half the 14 owner reports with an odometer reading on file fall between 4,000 and 31,000 miles. That is when problems get reported, which is not the same as when they start — and not a failure rate, because nobody knows how many of these cars never had a problem at all.

Too few readings for a curve — the 14 on file: 7 under 10k, 3 10k–20k, 1 30k–40k, 3 40k–50k.

Odometer readings as filed by owners with NHTSA. Readings under 100 or over 400,000 miles are dropped as data entry rather than history, and a component needs at least 12 readings before a median is shown for it.

Crash ratings

Source: NHTSA NCAP

Configuration	Overall	Frontal	Side	Rollover	Rollover risk
PU/CC 4WD	★★★★☆	★★★★☆	★★★★★	★★★☆☆	20%
PU/CC RWD	★★★★☆	★★★★☆	★★★★★	★★★☆☆	21%
PU/EC 4WD	★★★★☆	★★★★☆	★★★★★	★★★☆☆	20%
PU/EC RWD	★★★★☆	★★★★☆	★★★★★	★★★☆☆	20%
PU/RC 4WD	★★★★☆	★★★★☆	★★★★★	★★★☆☆	20%
PU/RC RWD	★★★★☆	★★★★☆	★★★★★	★★★☆☆	20%

NHTSA New Car Assessment Program.

Service bulletins & campaigns

Source: NHTSA manufacturer communications

Extended coverage on file 1 filing by the manufacturer with NHTSA naming this model year

Term not in NHTSA’s summary · GM warranty extension 22-NA-244This warranty administration service bulletin provides information about GM Accessories - Dealer-Installed, Repaired or Replaced During Warranty Coverage Period.

The term and the vehicles it covers are the manufacturer’s, as NHTSA’s summary of each filing states them; a dealer checks one particular car by its VIN. Every GM warranty extension (33) → · Every warranty extension on file, all makes →

Communicationsfiled with NHTSA 1,119

Most recentmanufacturer date 2026-09-26

Kindsas classified by NHTSA 1114 service bulletins, 3 service campaigns, 1 warranty extension

Most often about: Equipment, Engine, Electrical System, Power Train, Fuel/Propulsion System.

PIP6133 Service bulletin
2026-09-26 · Unknown Or Other
This PI was created to help address the correct repair regarding a low coolant message on the DIC
PIT5698F Service bulletin
2026-09-26 · Unknown Or Other
This PI provides Diagnostics tips on how the LIN bus works and how to diagnosis it.
PIP4902W Service bulletin
2026-09-04 · Unknown Or Other
This preliminary information advises a dealer on how to email GDS2 session logs into Technical Assistance.
PIT5680B Service bulletin
2026-07-23 · Unknown Or Other
This PI provides information to repair the door water deflector which is not sealed properly allows water into the door jam/sill area.
PIT5099J Service bulletin
2026-07-21 · Unknown Or Other
PI to help diagnose A/C concern
PIT5509N Service bulletin
2026-07-21 · Unknown Or Other
This PI provides diagnostic tips for diagnosing electric trailer brakes issues.
PIT5544J Service bulletin
2026-06-24 · Unknown Or Other
This Preliminary information communicates information on a hydraulic rush type noise from the power steering gear. This noise is a characteristic of the new Active Hydraulic Assist System RPO NV8 and no repairs should be made. The noise is most noticeable in the cab at idle, in park, with all accessories turned off.
PIT5509M Service bulletin
2026-05-14 · Unknown Or Other
This PI provides diagnostic tips for diagnosing electric trailer brakes issues.

A service bulletin is the manufacturer telling its dealers how to diagnose or repair a known condition. It is not a recall, not a finding that the vehicle is defective, and the work is not automatically free — though a bulletin is often what a dealer works from when you describe a symptom, so quoting the document number can save a diagnosis. The count is every communication filed; the list shows the most recent, one entry per campaign, because a single campaign is usually filed as several documents on the same day. The summaries are NHTSA's; the full documents come from the manufacturer.

Diagnostic trouble codes on file

Source: NHTSA manufacturer communications and complaints

Codes documented against this model year in the federal record. A code appearing here does not mean this vehicle will set it — it means the code is part of this nameplate-year's documented history.

Code	What it means	Most often filed under	Where it appears
B3055 B3055 on GMC →	Manufacturer-defined — the meaning is set by the automaker, not the standard.	Electrical System · Battery →	7 bulletins
B3060 B3060 on GMC →	Manufacturer-defined — the meaning is set by the automaker, not the standard.	Electrical System · Battery →	7 bulletins
B3935 B3935 on GMC →	Manufacturer-defined — the meaning is set by the automaker, not the standard.	Electrical System · Battery →	7 bulletins
P2463 P2463 on GMC →	Soot has built up in the diesel particulate filter beyond the allowed limit.	Engine	6 bulletins
P0300 P0300 on GMC →	Misfire detected, but not isolated to one cylinder.	Engine · Ignition coils →	5 bulletins
P0308 P0308 on GMC →	Cylinder 8 is misfiring.	Engine · Ignition coils →	5 bulletins
P050D P050D on GMC →	Manufacturer-defined — the meaning is set by the automaker, not the standard.	Engine	5 bulletins
C0710 C0710 on GMC →	Manufacturer-defined — the meaning is set by the automaker, not the standard.	Electronic Stability Control	3 bulletins
C1114 C1114 on GMC →	Manufacturer-defined — the meaning is set by the automaker, not the standard.	Electrical System · Battery →	3 bulletins
P018B P018B on GMC →	Manufacturer-defined — the meaning is set by the automaker, not the standard.	Fuel/Propulsion System · Fuel pump →	3 bulletins
P0442 P0442 on GMC →	A small leak in the evaporative emissions system.	Electrical System · Gas cap →	3 bulletins
P0455 P0455 on GMC →	A large leak in the evaporative emissions system — often a fuel cap left off.	Electrical System · Gas cap →	3 bulletins

Generic codes (the second character is 0 or 2) mean the same thing on every vehicle sold in the United States. Manufacturer-specific codes (1 or 3) mean whatever the automaker assigned, and no honest source can define them for you — which is why the ones here carry the evidence instead of a definition. A code is a link when enough separate federal documents name it across the catalogue to be worth a page of its own; the rest are listed here, where the vehicle is the context that makes them mean something.

At the New York inspection station

Source: New York State DMV

New York inspections 0.82%

failed the safety inspection

244 initial inspections of 240 vehicles.

Measure	The 2018 Sierra 2500HD	Every 2018 vehicle	Behind it
Failed the safety inspection	0.82%	1.9%	244
Air-bag warning lamp stayed lit	0%	0.22%	244
Miles driven a year	12,801	10,002	odometer at inspection
Average odometer	106,406	82,833	odometer at inspection

Fewer than 200 emissions tests are on file for it, so no emissions rate is shown. First inspections only, so a car that failed and came back is counted once; private and special plates, not taxis, livery or commercial plates. A rate appears only where at least 200 inspections stand behind it. “Every 2018 vehicle” is every 2018 model-year car, SUV and pickup inspected in the same window, all makes. This is the state’s record of test results, not a reliability score by itself. Source: New York State Department of Motor Vehicles, Vehicle Inspections (data.ny.gov, Open NY terms).

Sierra 2500HD by model year

all years, side by side →

Year Safety Recalls Complaints

2026 A 1 12 2025 A 1 28 2024 C 4 107 2023 A 1 33 2022 D 3 44 Park outside 2021 F 6 52 Park outside 2020 F 9 79 2019 F 7 32 2018 this page F 5 35 2017 F 6 37 2016 F 6 59

Common questions about the 2018 Sierra 2500HD

Source: EPA, NHTSA and manufacturer press kits

Does the 2018 GMC Sierra 2500HD have any recalls?

NHTSA has posted 5 recall campaigns for the 2018 GMC Sierra 2500HD, 3 of them rated critical. The most serious on file is 24V756000, covering Air Bags. 2 of them were filed with no repair available at the time — NHTSA's file records what the manufacturer had in hand on the filing date, not what exists today. Check your own VIN at nhtsa.gov/recalls; a recall applies to specific build ranges, not every car.

How safe is the 2018 GMC Sierra 2500HD?

NHTSA gave the 2018 GMC Sierra 2500HD 4 stars overall in its New Car Assessment Program tests — 4-star frontal crash, 5-star side crash, 3-star rollover. WhichTrim also grades it F (52/100) on its recall record, which is a different question from crash protection.

What are the dimensions of the 2018 GMC Sierra 2500HD?

Transport Canada measured it at 220.1–254.3 in long, 79.9 in wide (body, without mirrors), 78.0–78.3 in tall, on a 133.5–167.7 in wheelbase. Curb weight: 5,631–6,594 lb depending on configuration. Those are its measurements of the North American versions; every figure is in the table above.

What do owners complain about on the 2018 GMC Sierra 2500HD?

Owners have filed 35 complaints with NHTSA about the 2018 GMC Sierra 2500HD, most often about engine, electrical system, fuel/propulsion system. Of those, 2 a fire. Complaints are unverified owner reports, so treat the pattern as a signal and the individual report as an anecdote.

Are there service bulletins for the 2018 GMC Sierra 2500HD?

The manufacturer has filed 1119 service bulletins and related communications with NHTSA for the 2018 GMC Sierra 2500HD, most often covering equipment, engine, electrical system. The most recent is dated 2026-09-26. A bulletin is not a recall: it is the repair procedure a manufacturer sends its dealers for a condition it knows about, and the work is not automatically paid for. It is still worth knowing — if the symptom matches, quoting the bulletin number at the service desk can save a diagnosis. The document numbers and summaries are listed above.

How does the 2018 GMC Sierra 2500HD do at state inspection?

In New York’s inspection lanes over the 12 months to Oct 10, 2026, the 2018 GMC Sierra 2500HD failed the safety inspection on 0.82% of first inspections — lower than the 1.9% for every 2018 model-year vehicle inspected. The figures are New York State DMV’s own inspection records, first inspections only, and the table above sets each one against every vehicle of the same model year.

What we hold, and what an empty row means

Paid vehicle-history reports will not tell you the difference between “nothing happened to this car” and “we never received that record” — both of the big two say as much in their own help pages. Most of what is on this page comes from complete federal registers, so we can tell you which is which, row by row.

Data	Held	Source	What it covers — or what empty means
Fuel economy & configurations	none	EPA certification records	The EPA does not certify vehicles rated over 8,500 lb GVWR, so heavy-duty nameplates have no entry at all.
Emission certificates	none	EPA emission certificates	The EPA published no certificate we could match to a configuration on this page.
Recalls	5	NHTSA recall campaigns	A complete federal register: every campaign covering this model year, with severity and advisory flags.
Owner complaints	35	NHTSA complaint database	Also complete, but unverified: these are reports owners filed, not findings. Counts scale with how many were sold.
Crash ratings	6 tested	NHTSA NCAP	Only the configurations NHTSA chose to crash-test, which is never all of them.
Service bulletins	1119	NHTSA manufacturer communications	Everything the manufacturer told its dealers about a defect or malfunction, short of a recall.
Investigations	none	NHTSA Office of Defects Investigation	No defect investigation has been opened.
Driver-assist crash reports	none	NHTSA Standing General Order 2021-01	No report has been filed. Only entities named in the order report, and only crashes they hear of — so this is also what an unequipped car, or a manufacturer without telematics, looks like.
Specifications filed with NHTSA	8 fields	NHTSA vPIC, decoded from VIN patterns	What the manufacturer filed under the federal VIN rule — a configuration, not the full trim ladder.
Measured dimensions	7 fields	Transport Canada, Canadian Vehicle Specifications	Length, width, height, wheelbase, track and curb weight, measured on the North American versions.
Trims, pricing & equipment	none	Manufacturer press kit	We have not transcribed a press kit for this model year yet. This is our gap, not the manufacturer's — the one row here where an empty cell means we are behind.

Rebuilt nightly; this page was generated 2026-10-26. Every figure above is traceable to the source named beside it, and the JSON for this page carries the same values with their identifiers.

Sources & method

Safety Signal starts every model-year at 100 and subtracts points per open NHTSA recall campaign by severity: critical 15 (fire risk, park-outside or do-not-drive advisories), high 8 (brakes, steering, airbags, loss of drive power, structure, battery), moderate 6, minor 3 (software, labels, lighting fixed by an update). The most serious recall counts in full and each further one counts 85% of the one before, because a vehicle sold in millions is recalled more often than a rare one without being more dangerous — and because a flat subtraction bottomed the scale out, scoring a vehicle with 22 recalls within a point of one with six. A ≥ 90, B ≥ 80, C ≥ 70, D ≥ 60, otherwise F. Read it as what it counts: recall campaigns on the federal record, weighted by severity. The damping reduces the sales bias by roughly 40% but does not remove it: like our complaint counts, this is not normalized by how many were sold, so a best-seller still scores somewhat worse than an obscure model with the same real risk. NHTSA crash ratings, do-not-drive and park-outside advisories, and the crash, fire, injury and death counts in owner complaints are reported separately on every page and never blended into the letter — a vehicle can hold five stars and a poor letter at once, and where that happens we say so rather than leave you to notice. Because the scale subtracts from a clean sheet, a model year too new to have been recalled, complained about or bulletined scores full marks on an empty record; we label those grades provisional rather than present them as earned.

EPA figures come from fueleconomy.gov vehicle records. Recalls, complaints, investigations and crash ratings come from NHTSA's public flat files, refreshed nightly.

JSON for this page · API

2018 GMC Sierra 2500HD

Specs & fuel economy

Specifications filed with NHTSA

Dimensions Exterior

Engine Basics

Fuel Economy

Transmission

Dimensions & weight

Factory warranty running out?

Recalls (5)

Air Bags

Fuel System, Diesel

Equipment

Engine

Seat Belts

Whether any of this applies to one specific Sierra 2500HD

Hear about a recall before the letter does

Parts & accessories for the 2018 GMC Sierra 2500HD

Owner complaints

Most-cited components

In owners' own words

When owners reported it

miles, typically

Crash ratings

Service bulletins & campaigns

Diagnostic trouble codes on file

At the New York inspection station

failed the safety inspection

Sierra 2500HD by model year

Common questions about the 2018 Sierra 2500HD

Does the 2018 GMC Sierra 2500HD have any recalls?

How safe is the 2018 GMC Sierra 2500HD?

What are the dimensions of the 2018 GMC Sierra 2500HD?

What do owners complain about on the 2018 GMC Sierra 2500HD?

Are there service bulletins for the 2018 GMC Sierra 2500HD?

How does the 2018 GMC Sierra 2500HD do at state inspection?

What we hold, and what an empty row means

Where to go next

Sources & method