The front wiper blades for the 2020 GMC Acadia AT4 are typically 24 inches on the driver’s side and 20 inches on the passenger’s side, with a 12-inch rear blade.
Understanding the correct blade sizes helps ensure optimal visibility in all weather. This article covers the recommended front and rear blade lengths for the AT4 trim and how to verify them for your vehicle.
Front wiper blade sizes
The following front blade sizes are what's commonly used on the 2020 Acadia AT4. If your current blades differ, you can measure or consult your manual to confirm.
- Driver-side blade: 24 inches
- Passenger-side blade: 20 inches
These front blade sizes reflect the standard setup for the 2020 Acadia AT4. If you operate in regions with unusual windshield shapes or special configurations, verify that these lengths apply to your specific vehicle.
Rear wiper blade size
The rear wiper on the 2020 Acadia AT4 is typically a single blade measuring 12 inches.
- Rear blade: 12 inches
Rear blade sizes can vary slightly by production run or market, so it’s wise to double-check against your current blade or the vehicle documentation.
How to verify the exact sizes for your vehicle
Because blade sizes can vary by production batch or region, use one of the following methods to confirm the precise lengths for your 2020 Acadia AT4.
- Check the owner’s manual for the recommended blade lengths.
- Measure the length of the current blades or carry one blade to the store for a direct comparison.
- Look up the exact parts for your vehicle by entering the VIN on GM’s official parts catalog or a trusted parts retailer.
- Ask your dealership or an auto parts professional with your vehicle details (year, trim, region) to confirm compatibility.
Once you’ve verified the sizes, replace with the correct lengths to ensure optimal contact with the windshield and effective wiping performance. When in doubt, choose OEM or OEM-equivalent blades to maintain fit and performance.
Blade types to consider
In addition to size, consider blade technology. Beam/hybrid blades often offer better contact and longer life than traditional frame blades, particularly in winter conditions. Confirm compatibility with your Acadia’s wiper system before purchasing.
Summary
For the 2020 GMC Acadia AT4, the standard front blade sizes are 24 inches on the driver’s side and 20 inches on the passenger’s side, with a 12-inch rear blade. Always verify with the owner’s manual, current blades, or a parts lookup to account for regional variations or production differences. Replacing with the correct sizes and blade type helps maintain clear visibility in all weather.