The typical setup for a 2017 GMC Terrain is a 26-inch driver-side front wiper, a 16-inch passenger-side front wiper, and an 11-inch rear wiper if your model has one.
This article explains the standard blade sizes you’ll likely need, notes about regional or trim variations, and practical steps to verify and replace them. Wiper sizes can differ by market, trim, or aftermarket substitutions, so it’s wise to confirm before purchasing.
Front wiper blade sizes for the 2017 GMC Terrain
Use this list to identify the correct lengths for the two front blades. The sizes below are the most commonly stocked and fit the 2017 Terrain in the majority of regions. If you are in a different market or have a nonstandard trim, please verify with the owner’s manual or a parts retailer.
Regional variations and compatibility
While 26 inches on the driver’s side and 16 inches on the passenger’s side are standard for most 2017 Terrain models, some catalogs may show 26"/17" or 26"/18" depending on regional supply or supplier conventions. Always confirm the exact lengths for your vehicle variant before ordering.
- Driver-side blade: 26 inches
- Passenger-side blade: 16 inches
These lengths cover the vast majority of 2017 Terrain configurations. If your current blades differ, measure their lengths or consult the vehicle’s manual to be certain before purchasing replacements.
Rear wiper blade size (if your model has a rear wiper)
For Terrain models equipped with a rear window wiper, the blade length is typically 11 inches. This size applies to the rear hatch area most commonly found on 2017 Terrain trims with a rear wiper.
- Rear blade: 11 inches
Note that some trims or regional variants may omit a rear wiper entirely, or use a slightly different length if a nonstandard rear geometry is employed. Always verify with your manual or dealer if you are unsure.
How to verify and replace
Follow these steps to ensure you buy the correct blades and install them properly.
- Check the owner's manual or the current blades for listed sizes, as printed on the packaging or blade markings.
- If you don’t have access to the manual, measure the existing blades from tip to mount center on both sides to confirm lengths.
- Use a retailer’s fit guide or enter your year, make, and model to confirm compatibility with aftermarket options (beam, traditional, or hybrid styles).
Once you have the right sizes, consider whether you want conventional, beam, or hybrid blades, and whether you need winter-rated blades for colder climates.
Summary
For the 2017 GMC Terrain, the standard front wiper blade sizes are 26 inches on the driver’s side and 16 inches on the passenger’s side, with an 11-inch rear blade if a rear wiper is present. Always verify against your specific market, trim, and manual, and consult a trusted retailer if you’re unsure. Properly sized, properly installed blades can improve visibility and safety in all seasons.