2017 Gmc Sierra Reliability ReportCommon Problems, Repair Costs & Expert Verdict
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Quick Facts · 2017 Gmc Sierra
- No active NHTSA safety recalls on record — a clean recall slate for the 2017 model year.
- The system most likely to surface first: transmission (8-speed automatic) (major severity).
The 2017 Gmc Sierra at a glance
- Is the 2017 Gmc Sierra reliable?
- Autojunket rates the 2017 Gmc Sierra 78/100 (grade C+), categorized as moderate risk. A powerful truck with known powertrain issues that demand careful pre-purchase scrutiny and proactive maintenance.
- Should I buy a used 2017 Gmc Sierra?
- Autojunket recommends reading the full reliability report before buying a 2017 Gmc Sierra. The 2017 GMC Sierra is a capable and comfortable truck, but it's held back by well-documented, potentially expensive powertrain reliability concerns. While many units perform flawlessly, the risks associated with the 8-speed transmission and AFM-equipped V8s are significant enough to warrant a cautious approach. A t…
- Which Gmc Sierra years are the most reliable?
- Best model years to buy: 2014-2015 (generally fewer 8-speed transmission issues, though still AFM risk) or 2019+ (newer generation with resolved transmission and AFM issues, though new DFM system still requires monitoring).. Years to avoid: 2016-2018 (peak 8-speed transmission issues, and persistent AFM problems).
- What are the most common problems with the 2017 Gmc Sierra?
- The top failure points on the 2017 Gmc Sierra are Transmission (8-speed automatic) (typically around 40,000-80,000 miles), Engine (V8 AFM/DFM System) (typically around 60,000-100,000 miles), Electrical System (typically around 30,000-70,000 miles). Autojunket's full report includes repair-cost ranges and inspection checklists for each.
- At what mileage do problems start on the 2017 Gmc Sierra?
- The first major mileage danger zone for the 2017 Gmc Sierra is around 30,000. Low Risk Zone — At this mileage, the truck is still relatively new. Focus on ensuring all factory recalls/TSBs have been addressed and watch for early signs of brake wear or electrical quirks.
Every answer is generated from real repair, recall, and ownership data — full breakdown in the report.
Read the full free reportShould You Buy the 2017 Gmc Sierra?
The 2017 GMC Sierra offers a robust platform and strong V8 performance, but specific powertrain and electrical issues elevate its long-term risk. While a capable workhorse, prospective buyers must proceed with caution and a thorough pre-purchase inspection to avoid costly repairs stemming from its known weaknesses.
The 2017 GMC Sierra is a capable and comfortable truck, but it's held back by well-documented, potentially expensive powertrain reliability concerns. While many units perform flawlessly, the risks associated with the 8-speed transmission and AFM-equipped V8s are significant enough to warrant a cautious approach. A t…
Best Model Years
2014-2015 (generally fewer 8-speed transmission issues, though still AFM risk) or 2019+ (newer generation with resolved transmission and AFM issues, though new DFM system still requires monitoring).
Years to Avoid
2016-2018 (peak 8-speed transmission issues, and persistent AFM problems)
Biggest Strengths
- Strong V8 engine options (when not afflicted by AFM issues)
- Robust frame and towing capabilities
- Spacious and comfortable cabin
Top Risk Areas
The systems that tend to fail first on the 2017 Gmc Sierra, with the typical mileage window when each becomes a concern. Detailed repair-cost ranges and exact what-to-check inspection notes are in the full report.
The 8L90 transmission, particularly when paired with the 5.3L or 6.2L V8, is prone to shuddering, harsh shifts, and eventually torque converter failure due to fluid degradation. This can lead to complete transmission replacement.
Active/Dynamic Fuel Management (AFM/DFM) lifters on the 5.3L and 6.2L V8 engines are known to fail, causing misfires, ticking noises, and potential camshaft damage. This often requires significant engine disassembly for repair.
Owners report various electrical gremlins, including infotainment system freezes/blackouts, intermittent sensor failures (e.g. parking sensors, blind spot monitoring), and issues with power accessories like windows or heated seats. Batte…
2017 Gmc Sierra Mileage Danger Zones
The mileage windows when the 2017 Gmc Sierra most commonly needs attention. Plan ahead, budget accordingly, and inspect before you cross each threshold.
Low Risk Zone
At this mileage, the truck is still relatively new. Focus on ensuring all factory recalls/TSBs have been addressed and watch for early signs of brake wear or electrical quirks.
Maintenance Zone
Key maintenance items like spark plugs (for some engines), transmission fluid (especially the 8-speed), and differential fluid should be addressed. This is where early signs of AFM lifter or transmission shudder issues might appear.
Elevated Risk Zone
This is a critical period where major powertrain issues (AFM lifter failure, transmission/torque converter failure) are more likely to manifest. Thorough inspections and budget for potential large repairs are essential.
High Risk Zone
Beyond 100,000 miles, the truck's reliability is heavily dependent on prior maintenance. Major powertrain components have an increased risk of failure, and general wear and tear on suspension, steering, and electrical components will be…
2017 Gmc Sierra Ownership Cost Outlook
What it typically costs to keep the 2017 Gmc Sierra on the road. Full 5-year cost-of-ownership projection and major-failure-risk forecast are in the report.
Annual Maintenance
$500-700
Moderate Repairs
$600-1,800 occasionally (e.g. brake overhaul, electrical module)
How Long Does the 2017 Gmc Sierra Last?
Focus on units with complete service records, especially for transmission fluid changes and oil changes, and be extra vigilant for powertrain symptoms between 50,000 and 100,000 miles.
What 2017 Gmc Sierra Owners Actually Say
What Owners Love
- Powerful V8 engine options provide excellent towing and hauling capability.
- Spacious and comfortable interior with good material quality for a truck.
- Smooth ride quality, especially with optional Magnetic Ride Control.
- Strong resale value due to GMC's premium image and truck demand.
Common Frustrations
- Frustrating 8-speed transmission shudder or harsh shifting issues.
- Concerns over AFM/DFM lifter failure leading to expensive engine repairs.
- Annoying electrical glitches, particularly with the infotainment system.
- Brakes tend to wear prematurely or warp rotors frequently.
Who Should Buy the 2017 Gmc Sierra?
Best For
- Buyers needing a strong towing and hauling capable truck
- Those who appreciate a comfortable, well-appointed truck interior
- DIY mechanics willing to tackle or mitigate common GM issues
Not Ideal For
- Buyers seeking absolute, worry-free long-term reliability (e.g. Toyota Tundra buyers)
- Those with a strict, limited budget for unexpected major repairs
How the 2017 Gmc Sierra Compares to Rivals
The 2017 Sierra generally holds its own against domestic competitors, but its specific powertrain weaknesses (AFM, 8-speed transmission) mean it trails the benchmark set by the Toyota Tundra in terms of long-term worry-free ownership.
More Reliable Than
- Nissan Titan (earlier generations, pre-2016)
- Ram 1500 (pre-2019, generally more electrical issues)
Comparable To
- Ford F-150 (EcoBoost engine issues, but generally robust overall)
- Chevrolet Silverado 1500 (shares identical platforms and most issues)
NHTSA Recalls
No active NHTSA safety recalls on file for the 2017 Gmc Sierra. Always verify with your VIN atnhtsa.gov.
What breaks on the 2017 Gmc Sierra?
Full reliability breakdown — engine, transmission, rust, electrical. With repair costs and mileage danger zones.
Autojunket OSC · OSC Transfer
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Where the 2017 Gmc Sierra report beats Carfax + CR
Carfax tells you if it crashed. Consumer Reports rates the whole nameplate. Autojunket tells you what will actually break on this specific year — and how to negotiate it.
Year-specific reliability score
Common problems + repair costs
Mileage danger zone map
AI negotiation script + walk-away price
Single report price
Frequently Asked Questions
Sell your 2017 Gmc Sierra for what it's actually worth.
Log every service on your Gmc Sierra. When it's time to sell, hand the buyer a signed PDF — every receipt, mileage-verified, close the deal at your price.
- OSC Transfer PDF — every receipt
- Snap-a-receipt AI log
- Fuel & mileage tracker
- Shareable buyer view link
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