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2015 GMC Sierra
Vehicle Summary
The 2015 GMC Sierra 1500 SLT is a robust pickup truck manufactured by General Motors LLC in Silao, Mexico. It features a 6.2-liter V8 engine capable of running on gasoline and ethanol (E85), with a hydraulic brake system and 4WD capabilities. This Crew Cab model is equipped with comprehensive airbag coverage and a direct tire pressure monitoring system, making it a reliable choice for both safety and performance.
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2015 GMC Sierra
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Complete Specifications
Known Issues for This Vehicle
Brake fluid leaks
Hydraulic brake systems can develop leaks in the brake lines or at the calipers, leading to decreased braking performance and potential brake failure.
Brake pedal feels spongy
Air in the hydraulic brake lines can cause the brake pedal to feel spongy and reduce braking effectiveness.
Excessive oil consumption
The L86 engine is known to have issues with consuming more oil than expected, which can lead to low oil levels and potential engine damage.
Valvetrain noise
This engine model with VVT (Variable Valve Timing) and AFM (Active Fuel Management) can develop a ticking noise due to lifter or camshaft wear.
Fuel injector failure
In E85 compatible engines like the L86, fuel injectors may get clogged or fail, particularly if E85 fuel is used frequently, affecting performance and fuel efficiency.
Cooling system issues
Aluminum engines can be prone to overheating if the cooling system is not properly maintained, leading to potential engine damage.
Transmission problems
Although not directly related to the engine, the GMC Sierra 2015 is known for transmission issues, such as hard shifting or slipping, which can affect overall vehicle performance.
Rust and corrosion
Depending on the environment, rust and corrosion can affect braking components and other undercarriage parts, leading to potential safety hazards.
