PROBLEM GUIDE
Here's what owners are experiencing, based on our research of real owner reports and repair data.
Last updated February 2026
428
complaints filed for the 2015 model year
2015–2016
Model years affected
Click a problem for the full write-up — symptoms, what we found, and typical repair costs where we have them.
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Start my diagnosis →Pinhole leaks, fuel odor in the cabin
Check engine light: Off
A fuel line rubs against the frame causing pinhole leaks and fuel odor in the cabin, a fire hazard — explicitly tied to a condition GM documented in Service Bulletin 17-NA-304. The same defect is reported on the Chevrolet Tahoe, which shares this platform.
Increased stopping distance
Check engine light: On
The brake pedal becomes very hard to push at slow speeds, with increased stopping distance and brake assist failures — owners explicitly note "issues persist even after recalls performed."
Intermittent steering wheel lock-up
Check engine light: On
Loss of power steering at low speeds occurs, with EPS module failures "despite prior recalls," and intermittent steering wheel lock-up.
Identical symptoms to covered vehicles
Check engine light: Off
Multiple complainants describe VINs excluded from applicable recalls "despite identical symptoms."
Echoes the Chevrolet Tahoe, same batch
Check engine light: On
AFM (Active Fuel Management) hydraulic lifter failures cause power loss during acceleration — the same failure is reported on the Chevrolet Tahoe, which shares this platform.
Persistent false trailer-brake alerts
Check engine light: On
Complete electrical shutdown occurs while driving; separately, persistent false "Service Trailer Brake System" alerts are reported.
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The information on this page is for general educational purposes only and is not a diagnosis. It is compiled from aggregated owner-reported data and publicly available sources, not from an inspection of your vehicle. Symptoms described here can have multiple causes, and the presence of a commonly reported problem does not mean your vehicle has it. Repair cost ranges are estimates that vary by region, shop, vehicle condition, and parts availability. Recall and service campaign information may be incomplete or out of date — verify current recall status with NHTSA or your manufacturer. MyGearGuru is not affiliated with, endorsed by, or sponsored by any vehicle manufacturer; manufacturer and model names are used for identification only. Always consult a qualified technician before making repair decisions.
A fuel line rubs against the frame, causing pinhole leaks and fuel odor in the cabin — explicitly tied to a condition GM documented in Service Bulletin 17-NA-304. The same defect is reported on the Chevrolet Tahoe, which shares this platform. This is a different generation from the 2007-2013 Chevrolet Suburban.