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Chevrolet 1997658 EGR Valve

1985-1989 Chevrolet

Customer Questions & Expert Answers (3)
1997658 GM EGR Valve Illustration 1 of 1
  • Part Description
    SOLENOID, Emission Control System
  • Manufacturer
    General Motors
  • Manufacturer's Notes
    This part is discontinued.
Make sure this part fits
  • Related Parts
  • Specifications
  • Fitment
  • Q&A
  • Product Specifications

    BrandGenuine Chevrolet
    Manufacturer Part Number1997658
    Part DescriptionSOLENOID, Emission Control System
    Item Dimensions3.3 x 2.7 x 2.7 inches
    Item Weight0.50 Pounds
    ConditionNew
    Fitment TypeDirect Replacement
    ManufacturerGeneral Motors
    SKU1997658
    WarrantyThis genuine GM part is guaranteed by GM's factory warranty.
    Shipping & ReturnShipping Policy Return Policy
    Warning: California's Proposition 65
  • Vehicle Fitment

    Year Make Model Engine Important vehicle option details
    1987-1989 Chevrolet Astro6 Cyl 4.3LVAN ASTRO
    1985-1986 Chevrolet Blazer8 Cyl 5.0L, 8 Cyl 5.7L1/2 TON
    1985-1986 Chevrolet C108 Cyl 5.0L, 8 Cyl 5.7LREGULAR CAB LONG BOX, REGULAR CAB STANDARD BOX
    1985-1986 Chevrolet C208 Cyl 5.0L, 8 Cyl 5.7LCREW CAB, REGULAR CAB
    1985-1986 Chevrolet C308 Cyl 5.7LCAB CHASSIS 135.5, CAB CHASSIS 159.9, CREW CAB, REGULAR CAB
    1985-1986 Chevrolet K108 Cyl 5.0L, 8 Cyl 5.7LREGULAR CAB LONG BOX, REGULAR CAB STANDARD BOX
    1985-1986 Chevrolet K208 Cyl 5.0L, 8 Cyl 5.7LREGULAR CAB
    1985-1986 Chevrolet K308 Cyl 5.7LCAB CHASSIS 135.5, CAB CHASSIS 159.9, CREW CAB, REGULAR CAB
    1985-1986 Chevrolet Suburban8 Cyl 5.0L, 8 Cyl 5.7L1/2 TON, 3/4 TON
  • Customer Questions & Expert Answers

    Q:
    I'm wondering if this is complete and correct part for my vehicle.
    A:
    You can Select Your Vehicle to check if 1997658 fits your vehicle.
    Posted and answered by GM Parts Specialist Julian
    Q:
    What is the purpose of the EGR Vacuum Solenoid in the EGR system for the 1987 Chevrolet Astro? Posted by Adriona J.
    A:
    The EGR (Exhaust Gas Recirculation) system is designed to reduce nitrogen oxide emissions that result from high combustion temperatures by controlling the amount of exhaust gases that enter the fuel/air mixture, thereby lowering combustion temperatures. You can Select Your Vehicle to see complete installation and repair tips.
    Answered by GM Parts Specialist Syed / Aug 18, 2022
    Q:
    How should hoses and solenoids, including those related to the EGR Valve, be replaced for the 1989 Chevrolet Astro? Posted by Korey K.
    A:
    When replacing hoses, the VECI (Vehicle Emission Control Information) label serves as a routing guide. For solenoid and switch replacements, similar precautions regarding battery disconnection and careful handling are advised. You can Select Your Vehicle to see complete installation and repair tips.
    Answered by GM Parts Specialist Henry / Oct 26, 2025

Genuine GM Part 1997658, the Right Choice

To ensure reliability, purchase GM part # 1997658 EGR Valve. It is sometimes referred to as Chevrolet EGR Vacuum Solenoid, Chevrolet EGR Valve. Directly from GM, genuine parts are superb with regards to quality, longevity, and fit. Every single part passed stringent quality testing, so you can be sure that it's safe, durable, and built to perform like your original parts. This part fits specific Chevrolet Astro, Blazer, C10 models.

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