Most Common Car Issues

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Engine Manufacturer

Engine Model

Engine Number of Cylinders

Make

Model Year

MOST COMMON PROBLEMS

GMC Yukon 2018

The 2018 GMC Yukon is a versatile multipurpose passenger vehicle (MPV) featuring a powerful 5.3L V8 engine with 5300 CC displacement, capable of reaching a top speed of 113 MPH. This robust SUV seats up to eight passengers and offers advanced safety features such as Dynamic Brake Support, Lane Departure Warning, and Forward Collision Warning as standard. With a 4WD drive type and a 6-speed automatic transmission, it provides a reliable and smooth driving experience. Priced at $57,200, the Yukon is manufactured by General Motors in Arlington, Texas, ensuring American craftsmanship.

Spec:

Dynamic Brake Support (DBS)

Standard

Engine Manufacturer

Engine Model

L83 - Spark Ignited Direct Injection, Variable Valve Timing, AFM, E85 MAX, ALUM

Engine Number of Cylinders

Problems:

Engine oil consumption

Some users have reported excessive oil consumption in GM's L83 engines, which might require more frequent oil top-ups or checks.

Afm lifter failure

The Active Fuel Management (AFM) system can sometimes lead to lifter failure, causing engine noise and performance issues.

Carbon buildup

Direct injection engines like the L83 can experience carbon buildup on intake valves, which may affect performance and fuel efficiency over time.

Timing chain wear

Premature wear of the timing chain may occur, leading to noise and potential engine damage if not addressed.

Fuel injector issues

Problems with fuel injectors can lead to misfires or reduced engine performance, requiring cleaning or replacement.

Coolant leaks

Some owners have reported coolant leaks from hoses or the radiator, which can lead to overheating if not fixed.

Transmission shudder

Although not directly related to the engine, some GMC Yukon models have experienced transmission shudder, which might feel like engine problems.

GMC Yukon 2018

The 2018 GMC Yukon Denali is a robust multipurpose passenger vehicle with a 6.2L V8 engine producing a displacement of 6200 CC. It seats up to 8 passengers and offers advanced safety features like Dynamic Brake Support, Lane Departure Warning, and Blind Spot Warning as standard. With a 10-speed automatic transmission and a top speed of 113 MPH, this 4WD vehicle ensures a smooth and powerful drive. The starting price is $66,200, reflecting its premium build and extensive features.

Spec:

Dynamic Brake Support (DBS)

Standard

Engine Model

L86 - Spark Ignited Direct Injection, Variable Valve Timing, AFM, E85MAX, ALUM

Engine Number of Cylinders

Problems:

Dynamic brake support (dbs) issues

Sometimes, the system may not activate as expected due to sensor malfunctions or software glitches.

Engine misfire

This can be caused by faulty spark plugs, ignition coils, or issues with the fuel injectors.

Oil consumption

The L86 engine is known to consume more oil than expected, often due to the Active Fuel Management (AFM) system.

Carbon buildup

Direct injection engines like the L86 can experience carbon buildup on the intake valves, affecting performance.

Timing chain wear

Over time, the timing chain may stretch or wear, leading to engine timing issues.

Fuel system problems

The fuel pump or fuel injectors may fail or become clogged, especially when using E85 fuel.

Cooling system issues

Radiator or water pump failures can lead to overheating.

Variable valve timing (vvt) problems

The VVT system may experience solenoid or actuator failures, causing poor engine performance.

Electrical system malfunctions

Issues with wiring or sensors can lead to various engine and vehicle performance problems.

Exhaust system failures

Problems with the catalytic converter or exhaust manifold can lead to reduced efficiency and performance.