Shift to Park System Malfunction

A prevalent issue where the vehicle fails to register that it is in Park, preventing shutdown or leading to unintended rolling. This is often linked to the transmission range sensor or shifter mechanism. Estimated repair cost: $400 - $1,200.

Recalls have addressed potential fuel pump detachment and high-pressure fuel pipe issues, which can lead to fuel leaks and a fire risk. This points to potential component degradation or manufacturing defects. Estimated repair cost: $600 - $1,000.

A recall addresses potential driveshaft fracture, which can cause a loss of propulsion. This indicates a potential weakness in the original component. Estimated repair cost: $500 - $1,500.

Electrical System Faults

A significant number of complaints relate to the electrical system, including issues that contribute to the 'Shift to Park' problem. This can manifest as various sensor failures or module malfunctions. Estimated repair cost: $200 - $1,000+.

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2018 GMC Acadia Maintenance guide

Name: Maintenance dataset for 2018 GMC Acadia
Creator: Carfocal

v1.0Updated May 30, 2026Daniel Wilson4 Sources Analyzed1 Critical Recalls

MAINTENANCE SUMMARY

The 2018 GMC Acadia requires diligent attention to its powertrain and electrical systems, with a notable 'Shift to Park' issue impacting vehicle shutdown and safety, often appearing around 25,000 miles. Regular inspections and adherence to maintenance schedules are crucial given its 'Below Average' reliability verdict, 484 complaints, and 2 recalls.

View Critical Issue: Driveshaft Fracture

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Reliability Score

Est. Annual Maintenance Cost

$300 - $500

TSBs & Recalls

418 TSBs | 2 Recalls

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Key Takeaways

Prioritize addressing the 'Shift to Park' system malfunction, a common and safety-relevant issue.
Ensure all recall work, particularly for the fuel pump and driveshaft, is completed.

2 more takeaways unlock below

Critical service intervals

Common failure analysis

Symptoms and prevention guidance