2003 Chevrolet Blazer

2003 Chevrolet Blazer

Overview

The 2003 Chevrolet Blazer, a compact SUV, offered a range of engine and drivetrain options catering to different needs. While generally considered a capable vehicle for its time, like many vehicles of this era, it has specific areas where owners have reported issues. This analysis focuses on common mechanical and electrical problems, excluding routine maintenance. Understanding these potential pitfalls can help current and prospective owners anticipate and address necessary repairs, ensuring the longevity and reliability of their 2003 Blazer.

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Engine

4.3L V6 Vortec

Intake Manifold Gasket Leak

• Symptoms: Coolant leaks, engine misfires, rough idle, overheating.
• Solution: Replacement of the intake manifold gaskets.
• Cost: $400 - $700

Distributor Cap and Rotor Failure

• Symptoms: No start condition, rough running, engine misfires, check engine light.
• Solution: Replacement of the distributor cap and rotor.
• Cost: $150 - $300

2.8L Inline-4 (Less Common)

No widespread issues reported.

• Symptoms: N/A
• Solution: N/A
• Cost: Varies

Transmission

4L60-E 4-Speed Automatic

Torque Converter Clutch (TCC) Solenoid Failure

• Symptoms: Slipping, shuddering, inability to engage overdrive, check engine light.
• Solution: Replacement of the TCC solenoid.
• Cost: $300 - $600

3-2 Downshift Solenoid Failure

• Symptoms: Harsh shifting, delayed engagement, particularly when downshifting.
• Solution: Replacement of the 3-2 downshift solenoid.
• Cost: $250 - $500

NV1500 5-Speed Manual

No widespread issues reported.

• Symptoms: N/A
• Solution: N/A
• Cost: Varies

Suspension

Standard Chassis

Ball Joint Wear

• Symptoms: Clunking noises over bumps, uneven tire wear, steering wander.
• Solution: Replacement of worn ball joints.
• Cost: $300 - $600

Leaf Spring Sagging

• Symptoms: Rear end sag, reduced load capacity, poor handling.
• Solution: Replacement of rear leaf springs.
• Cost: $400 - $800

Electrical

General Electrical System

Window Regulator Failure

• Symptoms: Power windows not operating, slow operation, grinding noises.
• Solution: Replacement of the window regulator assembly.
• Cost: $200 - $400

HVAC Blower Motor Resistor Failure

• Symptoms: HVAC fan only works on high speed, or not at all.
• Solution: Replacement of the blower motor resistor.
• Cost: $100 - $250

Exterior

Body Panels and Trim

Rust on Body Panels

• Symptoms: Visible rust, particularly on wheel arches, rocker panels, and lower doors.
• Solution: Rust repair and repainting, or panel replacement.
• Cost: $300 - $1500+

Interior

Interior Components

Headliner Sagging

• Symptoms: Fabric separating from the backing board, drooping.
• Solution: Re-gluing or replacement of the headliner.
• Cost: $150 - $350

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Summary Verdict

The 2003 Chevrolet Blazer, particularly with the popular 4.3L V6 engine, is prone to some common issues typical of vehicles of its age and design. Intake manifold gasket leaks and distributor component failures are notable engine concerns. For transmissions, the 4L60-E automatic can experience solenoid issues affecting shifting. Suspension components like ball joints and leaf springs may require attention due to wear. Electrical gremlins, such as window regulators and HVAC resistors, are also reported. Exterior rust and interior headliner sagging are cosmetic and structural concerns to watch for. Despite these potential issues, many 2003 Blazers remain on the road with proper maintenance and timely repairs.