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Most Common Car Issues Vin Explorer

Most Common Car Issues

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Engine Model
L87 - DI DFM, ALUM, GEN 5
Model Year
2021

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Brake System Type
Engine Configuration
Engine Number of Cylinders
Make
Model

MOST COMMON PROBLEMS

CHEVROLET Silverado 2021

The 2021 Chevrolet Silverado 1500 RST Crew Cab is a powerful truck featuring a 6.2L V8 engine with 6200 CC displacement. It comes standard with advanced safety features like ABS, ESC, and a backup camera, and offers optional Blind Spot Warning and Rear Cross Traffic Alert. This 4WD vehicle is equipped with LED headlamps, keyless ignition, and a direct TPMS, making it both robust and technologically advanced. Manufactured in Silao, Mexico, this pickup is designed for utility and performance.

Spec:

Brake System Type
Hydraulic
Engine Configuration
V-Shaped
Engine Model
L87 - DI DFM, ALUM, GEN 5
Engine Number of Cylinders
8

Problems:

Brake fluid leaks
In hydraulic brake systems, leaks can occur, leading to reduced braking efficiency and potential brake failure.
Brake pedal sponginess
Air in the hydraulic lines can cause the brake pedal to feel spongy, reducing braking performance.
Brake rotor wear
Over time, brake rotors can wear unevenly or become warped, leading to vibrations or reduced braking effectiveness.
Carbon buildup
Direct Injection engines like the L87 can experience carbon buildup on intake valves, affecting engine performance and fuel efficiency.
Oil consumption
V-shaped engines, including the L87, can sometimes consume more oil than expected, leading to low oil levels and potential engine damage if not monitored.
Cylinder deactivation issues
The L87 engine features Dynamic Fuel Management (DFM), which can sometimes cause rough running or vibrations when switching between cylinder modes.
Cooling system problems
Aluminum engines, such as the L87, can be sensitive to cooling system issues, leading to overheating or coolant leaks.
Timing chain wear
Over time, the timing chain in V8 engines can stretch or wear, causing timing issues and potential engine damage.
GMC Sierra 2021

The 2021 GMC Sierra 1500 SLT is a robust pickup truck designed for versatility and power. With a 6.2L V8 engine, 4WD, and a crew cab, this truck is built to handle heavy loads and rough terrains. Safety features include curtain airbags for all rows and front-side airbags, complemented by a direct TPMS. Manufactured in Fort Wayne, Indiana, this Sierra model offers a blend of performance, safety, and durability.

Spec:

Brake System Type
Hydraulic
Engine Configuration
V-Shaped
Engine Model
L87 - DI DFM, ALUM, GEN 5
Engine Number of Cylinders
8

Problems:

Brake fluid leaks
Hydraulic brake systems can develop fluid leaks, which can result in reduced braking efficiency.
Brake pad wear
Over time, brake pads can wear down and need to be replaced to maintain proper braking function.
Brake noise
Squeaking or grinding noises can indicate worn brake pads or rotors.
Brake pedal feel
A spongy or soft brake pedal can signify air in the brake lines or a problem with the master cylinder.
Oil consumption
The V-shaped engine configuration might consume more oil, leading to the need for more frequent oil changes.
Engine overheating
The complexity of a V-shaped engine can sometimes lead to overheating issues if not properly maintained.
Misfiring
The L87 engine may experience misfiring due to issues with spark plugs, ignition coils, or fuel injectors.
Timing chain wear
Over time, the timing chain in the L87 engine can wear out, leading to poor engine performance or failure.
Fuel injector problems
Direct Injection (DI) engines can suffer from clogged or faulty fuel injectors, affecting performance.
Active fuel management (dfm) issues
The Dynamic Fuel Management system can develop faults, leading to inconsistent engine performance.
Cylinder deactivation issues
Problems with the cylinder deactivation system can lead to rough idling or performance issues.
Aluminum block wear
The aluminum engine block can wear over time, particularly if not properly maintained.
Coolant leaks
V-shaped engines often have more complex cooling systems, which can be prone to leaks.
Transmission issues
The GMC Sierra may experience transmission problems, such as rough shifting or slipping gears, which can affect overall performance.
Electrical problems
Modern vehicles, including the 2021 GMC Sierra, can suffer from various electrical issues, such as faulty sensors or wiring problems.
GMC Sierra 2021

The 2021 GMC Sierra 1500 Denali is a robust pickup truck designed for both power and luxury. Equipped with a 6.2L V8 engine, 4WD, and a crew cab, it ensures performance and comfort on all terrains. Safety features include curtain airbags in all rows and front and side airbags for the first row. Built in Fort Wayne, Indiana, this truck combines American engineering with premium features.

Spec:

Brake System Type
Hydraulic
Engine Configuration
V-Shaped
Engine Model
L87 - DI DFM, ALUM, GEN 5
Engine Number of Cylinders
8

Problems:

Brake fluid leaks
Hydraulic brake systems can develop fluid leaks, which can result in reduced braking efficiency.
Brake pad wear
Over time, brake pads can wear down and need to be replaced to maintain proper braking function.
Brake noise
Squeaking or grinding noises can indicate worn brake pads or rotors.
Brake pedal feel
A spongy or soft brake pedal can signify air in the brake lines or a problem with the master cylinder.
Oil consumption
The V-shaped engine configuration might consume more oil, leading to the need for more frequent oil changes.
Engine overheating
The complexity of a V-shaped engine can sometimes lead to overheating issues if not properly maintained.
Misfiring
The L87 engine may experience misfiring due to issues with spark plugs, ignition coils, or fuel injectors.
Timing chain wear
Over time, the timing chain in the L87 engine can wear out, leading to poor engine performance or failure.
Fuel injector problems
Direct Injection (DI) engines can suffer from clogged or faulty fuel injectors, affecting performance.
Active fuel management (dfm) issues
The Dynamic Fuel Management system can develop faults, leading to inconsistent engine performance.
Cylinder deactivation issues
Problems with the cylinder deactivation system can lead to rough idling or performance issues.
Aluminum block wear
The aluminum engine block can wear over time, particularly if not properly maintained.
Coolant leaks
V-shaped engines often have more complex cooling systems, which can be prone to leaks.
Transmission issues
The GMC Sierra may experience transmission problems, such as rough shifting or slipping gears, which can affect overall performance.
Electrical problems
Modern vehicles, including the 2021 GMC Sierra, can suffer from various electrical issues, such as faulty sensors or wiring problems.
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