GMC · Known Issues

2023 GMC Acadia Problems: 3 Known Issues

2023 model year · 560+ owner reports · Updated September 2026

According to Au7o's analysis of 560+ owner reports, the 2023 GMC Acadia has 3 documented known issues, with 2 rated critical. The most serious are 3.6L V6 Internal Water Pump Failure and Coolant Leak and Incorrect Transmission Sun Gear Causing Driver-Side Half-Shaft Disengagement / Rollaway (Recall N222389310). The most commonly reported issue is 9T65 9-Speed Transmission Harsh Shifts and Hesitation with 560 owner reports. DIY maintenance guides at au7o.io.

Frequently Asked Questions

What are the most common GMC Acadia problems?

According to Au7o's analysis of 560+ owner reports, the 2023 GMC Acadia has 3 documented issues. The most frequently reported are: 3.6L V6 Internal Water Pump Failure and Coolant Leak, Incorrect Transmission Sun Gear Causing Driver-Side Half-Shaft Disengagement / Rollaway (Recall N222389310), 9T65 9-Speed Transmission Harsh Shifts and Hesitation. Of these, 2 are rated critical and should be addressed promptly.

Is the GMC Acadia reliable?

The 2023 GMC Acadia has 3 known issues documented across 560+ owner reports. 2 issues are rated critical: 3.6L V6 Internal Water Pump Failure and Coolant Leak and Incorrect Transmission Sun Gear Causing Driver-Side Half-Shaft Disengagement / Rollaway (Recall N222389310). Prospective buyers should inspect for these issues and factor potential repair costs into their purchase decision. Regular maintenance following the manufacturer's schedule helps prevent many common problems.

How much does it cost to fix common GMC Acadia problems?

Repair costs for known GMC Acadia issues range from $0 to $3,500, depending on the specific problem and whether you choose DIY or professional repair. Au7o provides step-by-step DIY maintenance guides that can help reduce repair costs.

What is the 2007-2023 GMC Acadia 3.6L V6 Internal Water Pump Failure and Coolant Leak?

GM customer-satisfaction bulletin 13079 covers certain 2009-2013 GMC Acadia vehicles with 3.6L High Feature V6 engines (RPO LY7 or LLT) that may experience leakage from the water-pump shaft seal, often after operation with low coolant. Severity: high.

What is the 2023 GMC Acadia Incorrect Transmission Sun Gear Causing Driver-Side Half-Shaft Disengagement / Rollaway (Recall N222389310)?

NHTSA campaign 23V172 covers certain 2023 GMC Acadia vehicles. An incorrect transmission sun gear can allow the driver-side half-shaft to disengage, causing a loss of drive power or a vehicle rollaway while in Park. Severity: high.

What is the 2017-2025 GMC Acadia 9T65 9-Speed Transmission Harsh Shifts and Hesitation?

The second-generation Acadia (2017+) uses the GM 9T65 9-speed automatic transmission which shares known issues with the Chevrolet Traverse and Blazer. Common complaints include harsh 1-2 upshifts, hesitation between 5-15 mph, lurching on light throttle in stop-and-go traffic, and… Repairs typically run $0-$3,500. Severity: medium.

2023 GMC Acadia Problems: 3 Known Issues

All 3 Known Issues

2007-2023 GMC Acadia: 3.6L V6 Internal Water Pump Failure and Coolant Leak#

Common Symptoms

How to Fix

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2023 GMC Acadia: Incorrect Transmission Sun Gear Causing Driver-Side Half-Shaft Disengagement / Rollaway (Recall N222389310)#

Common Symptoms

How to Fix

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2017-2025 GMC Acadia: 9T65 9-Speed Transmission Harsh Shifts and Hesitation#

Common Symptoms

How to Fix

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Other GMC Models

Frequently Asked Questions

What are the most common GMC Acadia problems?

Is the GMC Acadia reliable?

How much does it cost to fix common GMC Acadia problems?

What is the 2007-2023 GMC Acadia 3.6L V6 Internal Water Pump Failure and Coolant Leak?

What is the 2023 GMC Acadia Incorrect Transmission Sun Gear Causing Driver-Side Half-Shaft Disengagement / Rollaway (Recall N222389310)?

What is the 2017-2025 GMC Acadia 9T65 9-Speed Transmission Harsh Shifts and Hesitation?