Service Brakes / Brake Assist Failure

Complaints and recalls highlight issues with the braking system, including a hard brake pedal, loss of stopping power, and 'Service Brake Assist' warnings. These point to potential problems with the vacuum assist, electronic brake control module, or related sensors. Estimated repair cost: $500 - $1,500+.

Some owners experience engine problems such as rough idle, stalling, and misfires. Fuel injector failures have also been reported, sometimes requiring long waits for replacement parts. Estimated repair cost: $500 - $2,000+.

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2017 GMC Yukon Maintenance guide

Name: Maintenance dataset for 2017 GMC Yukon
Creator: Carfocal

v1.0Updated May 30, 2026Ryan Davis4 Sources Analyzed5 Critical Recalls

MAINTENANCE SUMMARY

The 2017 GMC Yukon presents a below-average reliability profile, marked by significant complaints concerning exterior lighting failures, power train issues, and service brakes. Proactive owners should prioritize inspections of the LED tail/brake lights and the braking system, particularly for any signs of reduced performance or warning lights, to mitigate potential safety risks and costly repairs.

View Critical Issue: Power Train Issues (Transmission)

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Reliability Score

Est. Annual Maintenance Cost

$500 - $1,000

TSBs & Recalls

735 TSBs | 7 Recalls

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Key Takeaways

Prioritize inspection of LED tail/brake lights due to high failure rates.
Regularly check the braking system for any signs of reduced performance or warning lights.

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Critical service intervals

Common failure analysis

Symptoms and prevention guidance