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GM 19458956 Valve Assembly PCV

1982-1997 GM

Customer Questions & Expert Answers (3)
19458956 GM Valve Assembly PCV Product Photo 1 of 2
  • Part Description
    Positive Crankcase Ventilation Valve
  • Manufacturer
    General Motors
Make sure this part fits
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  • Related Parts
  • Specifications
  • Fitment
  • Q&A
  • Product Specifications

    BrandGenuine GM
    Manufacturer Part Number19458956
    Part DescriptionValve Assembly PCV; Positive Crankcase Ventilation Valve
    ConditionNew
    ManufacturerGeneral Motors
    SKU19458956
    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
    1993 Cadillac Allante8 Cyl 4.6LALLANTE
    1990-1995, 1985 Cadillac Deville8 Cyl 4.1L, 8 Cyl 4.5L, 8 Cyl 4.9L2 DOOR, 4 DOOR, 60 SPECIAL 4 DOOR, BROUGHAM 2 DOOR FWD, BROUGHAM 4 DOOR FWD, CONVERSION, FUNERAL COACH, LIMOUSINE 4 DOOR, LIMOUSINE 4 DOOR CTR PART, TOURING 4 DOOR
    1991-1993 Cadillac Eldorado8 Cyl 4.6L, 8 Cyl 4.9LCOMMERCIAL CHASSIS, ELDORADO
    1990-1992, 1985 Cadillac Fleetwood8 Cyl 4.1L, 8 Cyl 4.5L, 8 Cyl 4.9L2 DOOR, 4 DOOR, 60 SPECIAL 4 DOOR, BROUGHAM 2 DOOR FWD, BROUGHAM 2 DOOR RWD, BROUGHAM 4 DOOR FWD, BROUGHAM 4 DOOR RWD, CONVERSION, FUNERAL COACH, LIMOUSINE 4 DOOR, LIMOUSINE 4 DOOR CTR PART, TOURING 4 DOOR
    1991-1995 Cadillac Seville8 Cyl 4.6L, 8 Cyl 4.9L4 DOOR, SEVILLE
    1994-1995 Chevrolet Astro6 Cyl 4.3LVAN ASTRO
    1985-1995 Chevrolet Blazer6 Cyl 4.3L, 8 Cyl 5.0L, 8 Cyl 5.7L1/2 TON, 2 DOOR, 4 DOOR
    1985-1986 Chevrolet C108 Cyl 5.0L, 8 Cyl 5.7LREGULAR CAB LONG BOX, REGULAR CAB STANDARD BOX
    1992-1995, 1988-1989 Chevrolet C15008 Cyl 5.0L, 8 Cyl 5.7L, 8 Cyl 7.4LC1500 EXTENDED CAB LONG BOX, C1500 EXTENDED CAB STANDARD BOX, C1500 REGULAR CAB LONG BOX, C1500 REGULAR CAB STANDARD BOX
    1985-1986 Chevrolet C208 Cyl 5.0L, 8 Cyl 5.7L, 8 Cyl 7.4LCREW CAB, REGULAR CAB
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  • 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 19458956 fits your vehicle.
    Posted and answered by GM Parts Specialist Julian
    Q:
    How can I check if the PCV Valve is functioning properly for the 1995 Chevrolet Blazer? Posted by Tiernan W.
    A:
    To check it, pull it out and feel for suction and shake it to make sure it rattles. Place your finger over the end of the valve. If there is no vacuum at the valve, check for a plugged hose, manifold port, or the valve itself. You can Select Your Vehicle to see complete installation and repair tips.
    Answered by GM Parts Specialist Syed / Jan 24, 2023
    Q:
    What should you do if the PCV Valve doesn't rattle when shaken for the 1989 Chevrolet K1500? Posted by Ralphine W.
    A:
    If the PCV valve doesn't rattle when shaken, it needs to be replaced. You can Select Your Vehicle to see complete installation and repair tips.
    Answered by GM Parts Specialist Henry / Mar 12, 2025

Genuine GM Part 19458956, the Right Choice

To ensure reliability, purchase GM part # 19458956 Valve Assembly PCV. It is sometimes referred to as GM PCV 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 Cadillac Allante, Deville, Fleetwood models. It fits Chevrolet Blazer, Camaro, Tahoe. It also fits GMC C2500, Suburban, Yukon. This also fits Pontiac Firebird.

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