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Precision Glass Run Channel, Left or Right Hand GRB 1120 73

Precision Glass Run Channel, Left or Right Hand GRB 1120 73
Precision Glass Run Channel, Left or Right Hand GRB 1120 73
$60.99 ea
NEWARRIVING SOONEstimated Ship Date 12/30/2025 (If Ordered Today)
Model: 3432469
Select a Vehicle or refer to the Vehicle Fitment Tab below to verify that this part fits your vehicle.
STANDARD
DELIVERY
STORE PICKUP
[More Info]
The Precision Glass Run Channel GRB 1120 73 is an OE-style left or right hand replacement channel that secures the door glass, reduces wind noise, and prevents water intrusion. Made from weather-resistant rubber with an integrated stiffening core, this channel restores proper window alignment and smooth operation. Ideal for restoration and maintenance, it helps eliminate rattles and seal the window-to-door interface for long-term durability and reliable performance.
Features:
  • Left or right hand compatibility for GRB 1120 73 applications.
  • Constructed from durable, weather-resistant rubber with a reinforced core.
  • Secures window glass to reduce vibration, wind noise, and rattling.
  • Helps prevent water intrusion and protects interior trim from moisture damage.
  • OEM-style fit for straightforward replacement and correct window alignment.
  • Designed for restoration or routine door seal maintenance and long-term durability.
Installation / Application:
  • Difficulty: 2/5
  • Estimated time: 30-60 minutes
Suggested Tools:
  • Trim panel removal tool or flat screwdriver (protected)
  • Phillips screwdriver
  • Needle-nose pliers
  • Shop towels
  • Rubbing alcohol or mild cleaner
  • Silicone lubricant or window channel grease
  • Adhesive or weatherstrip adhesive (if required)
  • Gloves
Instructions:
  1. Park vehicle on a level surface, lower the window glass partially so you can access the channel area, and disconnect the negative battery terminal if necessary for safety.
  2. Remove the interior door panel: pry out any caps, remove screws, and use a trim tool to release the clips. Set panel and fasteners aside.
  3. Carefully peel back or remove any vapor barrier or insulation to expose the glass run channel and door frame.
  4. Lower or raise the glass to a position that allows access to the channel retainer clips; use tape or a helper to hold the glass if needed.
  5. Remove the old glass run channel by disengaging retaining clips or adhesive. Use pliers for stubborn clips and trim tool to ease the channel out without damaging the door frame.
  6. Clean the channel mounting area with rubbing alcohol or a mild cleaner and wipe dry. Remove old adhesive residue and loose debris.
  7. Test-fit the new GRB 1120 73 channel on the door frame to confirm orientation (left vs right) and fit. Apply a thin bead of weatherstrip adhesive where specified by vehicle instructions, if required.
  8. Install the new channel by pressing it into the door frame groove, engaging any metal stiffeners or clips. Reposition the glass into the new channel, apply silicone lubricant or window grease along the run to ensure smooth movement.
  9. Cycle the window up and down several times to seat the glass and confirm smooth operation and correct alignment. Reinstall the vapor barrier, door panel, and all fasteners.
  10. Check for wind noise and water sealing by running the window and, if possible, performing a water test. Make minor adjustments as needed.
About Precision Replacement Parts

Since 1986 Precision Replacement Parts has been a trusted name in the Automotive Glass Industry.

Our knowledge and experience in manufacturing millions of extruded and molded EPDM Rubber, PVC and HDPE based plastics, and various stamped and extruded metal products for the classic and late model industries has allowed Precision to expand our services into multiple product markets.

Along with our own USA based production facility, Precision also partners with 25 different manufactures worldwide with a reputation as a global leader supplying OEM and replacement products to a number of different industries.  Our partnerships along with our own in-house manufacturing and fabrication capability gives Precision a unique position in helping to meet the expanding needs of customers everywhere, providing them with a sustained competitive advantage.

Vehicle Fitment:

The Vehicle Fitment Guide is to be used as a general reference. The data has been provided by our suppliers and manufacturers and may contain errors or incorrect data. Always refer to a professional to verify correct fitment for your vehicle.
Make Model Years
Chevrolet C10 Pickup 1973 - 1974
Chevrolet C10 Suburban 1973 - 1986
Chevrolet C10 1975 - 1986
Chevrolet C20 Pickup 1973 - 1974
Chevrolet C20 Suburban 1974 - 1986
Chevrolet C20 1975 - 1986
Chevrolet C30 Pickup 1973 - 1974
Chevrolet C30 1975 - 1986
Chevrolet C50 1973 - 1980
Chevrolet K10 Pickup 1973 - 1974
Chevrolet K10 Suburban 1974 - 1986
Chevrolet K10 1975 - 1986
Chevrolet K20 Pickup 1973 - 1974
Chevrolet K20 Suburban 1973 - 1986
Chevrolet K20 1975 - 1986
Chevrolet K30 Pickup 1973 - 1974
Chevrolet K30 1977 - 1986
Chevrolet R10 Suburban 1987 - 1988
Chevrolet R1500 Suburban 1989 - 1991
Chevrolet R20 Suburban 1987 - 1988
Chevrolet R20 1987 - 1988
Chevrolet R2500 Suburban 1989 - 1991
Chevrolet R2500 1989
Chevrolet R30 1987 - 1988
Chevrolet R3500 1989 - 1991
Chevrolet V10 Suburban 1987 - 1988
Chevrolet V1500 Suburban 1989 - 1991
Chevrolet V20 Suburban 1987 - 1988
Chevrolet V20 1987
Chevrolet V2500 Suburban 1989 - 1991
Chevrolet V30 1987 - 1988
Chevrolet V3500 1989 - 1991
GMC C15 Suburban 1975 - 1978
GMC C15/C1500 Pickup 1973 - 1974
GMC C15/C1500 Suburban 1973 - 1974
GMC C1500 Suburban 1979 - 1986
GMC C1500 1979 - 1986
GMC C15 1975 - 1978
GMC C25 Suburban 1975 - 1978
GMC C25/C2500 Pickup 1973 - 1974
GMC C25/C2500 Suburban 1973 - 1974
GMC C2500 Suburban 1979 - 1986
GMC C2500 1979 - 1986
GMC C25 1975 - 1978
GMC C35/C3500 Pickup 1973 - 1974
GMC C3500 1979 - 1986
GMC C35 1975 - 1978
GMC C5000 1979 - 1990
GMC K15 Suburban 1975 - 1978
GMC K15/K1500 Pickup 1973 - 1974
GMC K15/K1500 Suburban 1973 - 1974
GMC K1500 Suburban 1979 - 1986
GMC K1500 1979 - 1986
GMC K15 1975 - 1978
GMC K25 Suburban 1975 - 1978
GMC K25/K2500 Pickup 1973 - 1974
GMC K25/K2500 Suburban 1973 - 1974
GMC K2500 Suburban 1979 - 1986
GMC K2500 1979 - 1986
GMC K25 1975 - 1978
GMC K35/K3500 Pickup 1973 - 1974
GMC K3500 1979 - 1986
GMC K35 1977 - 1978
GMC R1500 Suburban 1987 - 1991
GMC R2500 Suburban 1987 - 1991
GMC R2500 1987 - 1989
GMC R3500 1987 - 1991
GMC V1500 Suburban 1987 - 1991
GMC V1500 1987
GMC V2500 Suburban 1987 - 1991
GMC V2500 1987
GMC V3500 1987 - 1991

Specifications:

Part Type Door Window Glass Run Channel
Proposition 65 www.P65Warnings.ca.gov
Warranty Lifetime on Defects TX

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