Leaks from the rear main seal, which separates the engine from the transmission, are a common and costly repair. This issue is often exacerbated by oil consumption problems. Estimated repair cost: $800 - $1,500.

The timing chain and its associated components can wear over time, leading to stretching or slack. This can cause engine performance issues and, if ignored, catastrophic engine failure. Estimated repair cost: $1,000 - $2,500.

Complaints indicate potential issues with airbag non-deployment. This is a critical safety concern that requires professional diagnosis. Estimated repair cost: $300 - $1,000+.

Exterior Lighting Recall

A recall exists for headlights that may cause excessive glare, failing to meet safety standards. This is a safety compliance issue addressed by the manufacturer. Estimated repair cost: $0 (Recall Service).

CARFOCALvehicle research

2017 GMC Terrain Maintenance guide

Name: Maintenance dataset for 2017 GMC Terrain
Creator: Carfocal

v1.0Updated May 30, 2026Ryan Davis4 Sources Analyzed

MAINTENANCE SUMMARY

The 2017 GMC Terrain, with a 'Below Average' reliability verdict and 162 complaints, demands vigilant maintenance, especially concerning its engine and powertrain. Significant engine failures like oil consumption and rear main seal issues are prevalent, requiring proactive checks and adherence to a strict maintenance schedule.

View Critical Issue: Engine Oil Consumption

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Reliability Score

Est. Annual Maintenance Cost

$300 - $600

TSBs & Recalls

520 TSBs | 1 Recalls

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Key Takeaways

Prioritize engine maintenance due to prevalent oil consumption and seal issues.
Regularly check engine oil levels; do not rely solely on the dipstick at scheduled intervals.

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Critical service intervals

Common failure analysis

Symptoms and prevention guidance