The vehicle fails to recognize that it is in Park, preventing shutdown and potentially draining the battery. This is a common electrical system issue. Estimated repair cost: $300 - $800.

The engine thermostat fails to regulate temperature, leading to overheating or insufficient heating. This can impact steering assist and AC performance. Estimated repair cost: $400 - $900.

The 9-speed automatic transmission exhibits shuddering or hesitation during gear changes, indicating potential internal wear or hydraulic issues. Estimated repair cost: $1,500 - $3,500.

Electrical System Issues

Widespread electrical system complaints, including issues with sensors, modules, and wiring, contributing to various malfunctions. Estimated repair cost: $200 - $1,000+.

CARFOCALvehicle research

2019 Chevrolet Blazer Maintenance guide

Name: Maintenance dataset for 2019 Chevrolet Blazer
Creator: Carfocal

v1.0Updated May 30, 2026Ryan Davis4 Sources Analyzed

MAINTENANCE SUMMARY

The 2019 Chevrolet Blazer presents a below-average reliability profile, marked by significant electrical and powertrain concerns. Key issues include the pervasive 'Shift to Park' fault and thermostat failures impacting steering assist, alongside transmission shudder.

View Critical Issue: Transmission Shudder

Subscribe to Recall Alerts Subscribe to Recall Alerts

Reliability Score

Est. Annual Maintenance Cost

$300 - $700

TSBs & Recalls

187 TSBs | 3 Recalls

CarFocal account required

Unlock the Full 2019 Chevrolet Blazer Maintenance Guide

Create a free account to reveal the full service schedule, repair costs, and deeper diagnostic data.

Key Takeaways

Owners should be vigilant about the 'Shift to Park' electrical fault, which impacts vehicle security.
Thermostat failures are a notable concern, potentially affecting steering assist and A/C.

3 more takeaways unlock below

Critical service intervals

Common failure analysis

Symptoms and prevention guidance