Window deflectors for the 1999 GMC Sierra 1500: what fits
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1 window deflector set lists the 1999 GMC Sierra 1500 on the maker's own page: AVS (Regular Cab or Extended Cab, front windows only).
Key takeaways
- AVS: listed for 1999-2006, Regular Cab or Extended Cab, front windows only.
- Pickups differ by cab: a Crew Cab set does not fit an Extended or Regular Cab. The maker's wording on each pick names the cab.
Listed for the 1999 GMC Sierra 1500 Regular Cab or Extended Cab
- + Set for the front windows only
- + Lets you leave a window cracked in rain or snow
- + Shaped to this model's door frames
- − Can add some wind noise at highway speed
Part AVS-892011. Why this fits: AVS's site says “Fits 1999-2006 GMC Sierra 1500”, checked 2026-10-28.
More 1999 GMC Sierra 1500 window deflectors on Amazon →
Other years: 2026, 2025, 2024, 2023, 2022, 2021, 2020, 2019, 2006, 2005, 2004, 2003, 2002, 2001, 2000.
Same vehicle: all GMC Sierra 1500 specs.
Product fit: each pick quotes and links its maker's own page (Husky Liners, AVS) or the brand's own Amazon listing, where the maker names this car and these years. We re-check picks monthly. Body style, trim and options can change what fits, so match the maker's wording to your car.