2021 GMC Terrain wiper blade size
The 2021 GMC Terrain uses a 24" driver-side wiper blade, a 18" passenger-side blade, and a 13" rear wiper blade.
2021 GMC Terrain wiper blade size chart
| Item | Size | Notes |
|---|---|---|
| Driver | 24" | Driver-side wiper blade |
| Passenger | 18" | Passenger-side wiper blade |
| Rear | 13" | Rear wiper blade |
| Connector | 9 X 3 Hook | Source-backed connector / arm type |
GMC Terrain wiper blade sizes by year
This table includes verified GMC Terrain model years available in our database.
| Year | Driver | Passenger | Rear | Connector |
|---|---|---|---|---|
| 2026 | 24" | 18" | Unverified | — |
| 2025 | 24" | 18" | Unverified | 9 X 3 Hook |
| 2024 | 24" | 18" | 12" | 9 X 3 Hook |
| 2023 | 24" | 18" | 12" | 9 X 3 Hook |
| 2022 | 24" | 18" | 12" | — |
| 2021 Current page | 24" | 18" | 13" | 9 X 3 Hook |
| 2020 | 24" | 18" | Unverified | 9 X 3 Hook |
| 2019 | 24" | 18" | Unverified | 9 X 3 Hook |
| 2018 | 24" | 18" | Unverified | 9 X 3 Hook |
| 2017 | 24" | 17" | 13" | PTB |
| 2016 | 24" | 17" | 13" | PTB |
| 2015 | 24" | 17" | 13" | PTB |
| 2014 | 24" | 17" | 13" | PTB |
| 2013 | 24" | 17" | 13" | PTB |
| 2012 | 24" | 17" | 13" | PTB |
| 2011 | 24" | 17" | 13" | PTB |
| 2010 | 24" | 17" | 13" | PTB |
The 2021 row is the sixth newest published Terrain row when sorted newest to oldest, sitting between 2022 and 2020. No other published Terrain year in this table currently shares this exact driver / passenger / rear pattern. Use it as a lower row in the published model-year table.
Not verified yet
- 2011 GMC Terrain - not linked because this record is needs review.
Fitment notes
When buying replacement blades, match this connector type. Most universal blades include adapters, but confirming your arm style at checkout prevents a return trip.
Retailer fitment tools may use different fitment data. Confirm blade length before ordering.
Vehicle-specific evidence notes
The 2021 GMC Terrain uses a staggered front pair: 24" on the driver side and 18" on the passenger side. Do not order two same-length front blades from this page.
The rear field for the 2021 GMC Terrain is 13". Rear size is supported by WiperSizeChart and Rain-X.
The 2021 GMC Terrain source table has 6 checked source rows. Driver size is supported by 2 source labels; passenger size is supported by 2 source labels.
Connector / arm type for the 2021 GMC Terrain is listed as 9 X 3 Hook and supported by Rain-X. Confirm the selected package includes that adapter.
Before ordering for this 2021 GMC Terrain
- Front pair: Select a 24" driver-side blade and a 18" passenger-side blade.
- Rear blade: Select a 13" rear blade.
- Connector: 9 X 3 Hook. Confirm the selected package includes the matching adapter.
- Source check: Last verified 2026-06-12 from WiperSizeChart.
About this data
How we verify fitmentThis record is source-backed and last verified on 2026-06-12.
This page-specific source pack checked WiperSizeChart for the 2021 GMC Terrain. The table lists which checked source contributed driver, passenger, rear, or connector evidence.
- Blade sizes
- Verified
- Rear status
- 13" verified
- Connector
- Verified
- Sources
- WiperSizeChart
- Cross-checked
- Bosch, TRICO, AutoZone, O'Reilly, Rain-X
- Driver blade: Supported by WiperSizeChart, Rain-X
- Passenger blade: Supported by WiperSizeChart, Rain-X
- Rear blade: Supported by WiperSizeChart, Rain-X
- Connector / arm: Supported by Rain-X
| Source | Role | Supports | Checked | Link |
|---|---|---|---|---|
| Bosch | Cross-check source | Checked only | 2026-06-12 | Open source |
| TRICO | Cross-check source | Checked only | 2026-06-12 | Open source |
| AutoZone | Retailer fitment check | Checked only | 2026-06-12 | Open source |
| O'Reilly | Retailer fitment check | Checked only | 2026-06-12 | Open source |
| WiperSizeChart | Primary fitment reference | Driver, Passenger, Rear | 2026-06-12 | Open source |
| Rain-X | Cross-check source | Driver, Passenger, Rear, Connector | 2026-06-14 | Open source |
2021 GMC Terrain wiper blade FAQ
Yes. The source-backed front pair for the 2021 GMC Terrain is 24" on the driver side and 18" on the passenger side. Match the two positions separately in the cart.
The rear wiper blade listed for this 2021 Terrain is 13". Confirm the retailer listing keeps the rear position separate from the front pair.
Retailer catalogs can update separately. Confirm the exact 2021 GMC Terrain selector at checkout before you buy.
Replacement paths
These are retailer search paths for your vehicle's wiper blade sizes. Verify final fitment at checkout.
This section may include affiliate or sponsored retailer links. They are purchase paths, not fitment evidence. Confirm sizes on the retailer site before ordering.
Walmart
Compare available wiper blade listings for the 2021 GMC Terrain and confirm the selected set matches the listed sizes.
Search 2021 GMC Terrain blades →AutoZone
Use AutoZone's vehicle selector for the 2021 GMC Terrain before checkout to confirm driver, passenger, and rear fitment.
Search 2021 GMC Terrain blades →Amazon
Search Amazon listings for the 2021 GMC Terrain and check the listing fitment notes against the sizes above.
Search 2021 GMC Terrain blades →O'Reilly
Open O'Reilly's fitment search for the 2021 GMC Terrain and verify the connector and blade lengths before ordering.
Search 2021 GMC Terrain blades →Look up another vehicle
Find source-backed wiper blade sizes by exact year, make, and model.