GMC Sierra HD problems
Light NHTSA footprint — 31 owner complaints. Either a clean record or thin data; we'll show what's there.
Solid reliability overall. Common issues are concentrated in a few systems.
Buyable on the data — keep up the usual maintenance and inspect normally.
- No systemic severe-failure pattern in the complaint record
- Reliability score 8.4/10 — above the segment average
Our read of the federal NHTSA complaint and recall record for this exact year and model — not a substitute for a pre-purchase inspection. How we score.
Buying a used 2019 GMC Sierra HD? Check these first
Here's what this model is known to do — so you can inspect for it, price it in, or make the seller fix it before you sign.
What to inspect on this specific car
- electrical — 7 owner reports · ~$850 to fix
- engine — 6 owner reports · tends to show around 38,440 mi · ~$3,100 to fix
- fuel system — 4 owner reports · tends to show around 67,510 mi · ~$1,200 to fix
⚠ The one to take seriously: electrical is flagged severe on this model . Inspect it closely on a test drive.
Recalls to confirm are done
Run the VIN from the listing — no active recalls on this model right now, but confirm none were opened after this car was built.
Verdict for buyers: 8.4/10 model. The priciest documented failure is engine (~$3,100) — get the seller's service records for it or inspect closely. Otherwise an average-risk used buy at a fair price.
We tell you what this model is known for and what to inspect — a vehicle-history report tells you what this exact car has been through. Smart buyers get both.
See the full pre-purchase inspection checklist →Ask anything about your 2019 GMC Sierra HD
A noise, a warning light, a repair quote, "should I buy this?" — get an answer grounded in this vehicle's actual NHTSA record, not generic advice.
Answers use this vehicle's NHTSA complaint & recall record — owner-reported and unverified, not a diagnosis. Verify anything safety-critical with a mechanic.
Top trouble spots 3 categories with 3+ complaints
What owners are saying recent NHTSA-filed complaints · verbatim
My center console wires for the charging pad broke and shorted out causing wires to burn and short the whole system out
The antilock braking system is not functioning properly. The sensor for the anti-lock brake control pump module is defective
I purchased a 2019 GMC Certified 2500 Diesel Truck with 48000 miles I started getting alerts on my dash stating TRAILER BRAKE SYSTEM over and over. I would press the dismiss button but it would not stop from appearing and dinging over and over. I took vehicle to dealer ship…
The contact owns a 2019 GMC Sierra 2500. The contact stated that while her husband was driving 30 MPH and depressing the accelerator pedal, there was an abnormal sound coming from the front of the vehicle, and the vehicle lost power unexpectedly. The contact stated that her…
Estimate your repair exposure
Drag to your current mileage. Numbers are derived from this vehicle's complaint history.
Common questions
Is the 2019 GMC Sierra HD reliable?
Mostly yes. With a reliability score of 8.4 out of 10 based on 31 owner complaints filed with NHTSA, the 2019 GMC Sierra HD is generally a sound vehicle. The areas to watch are listed in the top problem section above — most are budget items, not deal-breakers.
Should you avoid the 2019 GMC Sierra HD?
On the NHTSA data, the 2019 GMC Sierra HD does not need avoiding. Buyable on the data — keep up the usual maintenance and inspect normally. The record behind that call: No systemic severe-failure pattern in the complaint record; Reliability score 8.4/10 — above the segment average. This is our read of the federal complaint and recall data — not a substitute for a pre-purchase inspection.
What should I check before buying a used 2019 GMC Sierra HD?
Inspect the electrical first — it's the most-reported issue on this model, with 7 owner complaints filed. Average repair cost runs about $850 at an independent shop. Also confirm any open recalls have been completed by running the VIN, and ask for service records covering the problem areas listed above.
Is the 2019 GMC Sierra HD a good used car to buy?
It scores 8.4 out of 10 on our NHTSA-based read of 31 owner complaints. The main thing to watch is electrical. Priced fairly and clean on inspection, it's a reasonable used buy. Our data covers what this model is known for — pair it with a vehicle-history report on the VIN to see what that specific car has been through.
What's the most common problem on the 2019 GMC Sierra HD?
Based on NHTSA records, the most-reported issue is electrical, with 7 complaints filed. Average repair cost runs about $850 at an independent shop.
What's the most expensive thing that goes wrong?
The electrical is one of the costlier repair items. Average repair cost runs about $850 at an independent shop. Catching early warning signs can sometimes extend life by 20–30,000 miles.
How do I check if my GMC Sierra HD has open recalls?
Paste your VIN into the decoder at the top of this page. We pull live from NHTSA, so you'll see exactly which campaigns apply to your vehicle and whether the dealer has logged the fix. Recall repairs are always free regardless of mileage or warranty status.
Is an extended warranty worth it on a 2019 GMC Sierra HD?
Math is straightforward: a quality service contract runs $1,800–3,500 over 3 years. With 31 complaints on file and the costliest repair averaging $850, one major failure more than pays for it. The catch is reading the contract — many providers exclude wear items and require pre-authorization, so cheaper plans are not always better value.