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GMC 12632948 Thermostat

1996-2014 GMC

Customer Questions & Expert Answers (3)
12632948 GM Thermostat Product Photo 1 of 2
12632948 GM Thermostat Product Photo 1 of 2
12632948 GM Thermostat Product Photo 2 of 2
12632948 GM Thermostat Illustration 1 of 1
  • Part Description
    Thermostat, Engine Coolant Temperature
  • Replaces
    12257859, 12563335, 12557859, 12597583, 12551472
  • Manufacturer
    General Motors
Make sure this part fits
$31.28 MSRP: $59.02
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  • Specifications
  • Fitment
  • Q&A

  • Related Parts

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  • Product Specifications

    BrandGenuine GMC
    Manufacturer Part Number12632948
    Part DescriptionThermostat; Thermostat, Engine Coolant Temperature
    Item Dimensions3.0 x 3.1 x 3.1 inches
    Item Weight1.30 Pounds
    ConditionNew
    Fitment TypeDirect Replacement
    Replaces12257859, 12563335, 12557859, 12597583, 12551472
    ManufacturerGeneral Motors
    SKU12632948
    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
    1996-1999 GMC C15006 Cyl 4.3L, 8 Cyl 5.0L, 8 Cyl 5.7LC1500 EXTENDED CAB LONG BOX, C1500 EXTENDED CAB STANDARD BOX, C1500 REGULAR CAB LONG BOX, C1500 REGULAR CAB STANDARD BOX
    1996-2000 GMC C25008 Cyl 5.0L, 8 Cyl 5.7LC2500 CREW CAB, C2500 EXTENDED CAB LONG BOX, C2500 EXTENDED CAB STANDARD BOX, C2500 REGULAR CAB
    1996-2000 GMC C35008 Cyl 5.7LC3500 CAB CHASSIS 135.5, C3500 CAB CHASSIS 159.9, C3500 CAB CHASSIS 183.5, C3500 CREW CAB LONG WHEELBASE, C3500 CREW CAB SHORT WHEELBASE, C3500 EXTENDED CAB, C3500 REGULAR CAB, K2500 EXTENDED CAB STANDARD BOX
    1996-2001 GMC Jimmy6 Cyl 4.3L2 DOOR, 4 DOOR
    1996-1999 GMC K15006 Cyl 4.3L, 8 Cyl 5.0L, 8 Cyl 5.7LK1500 EXTENDED CAB LONG BOX, K1500 EXTENDED CAB STANDARD BOX, K1500 REGULAR CAB LONG BOX, K1500 REGULAR CAB STANDARD BOX
    1996-2000 GMC K25008 Cyl 5.0L, 8 Cyl 5.7LK2500 CREW CAB, K2500 EXTENDED CAB LONG BOX, K2500 EXTENDED CAB STANDARD BOX, K2500 REGULAR CAB
    1996-2000 GMC K35008 Cyl 5.7LK3500 CAB CHASSIS 135.5, K3500 CAB CHASSIS 159.9, K3500 CREW CAB LONG WHEELBASE, K3500 CREW CAB SHORT WHEELBASE, K3500 EXTENDED CAB, K3500 REGULAR CAB
    1996-2005 GMC Safari6 Cyl 4.3LVAN SAFARI
    1996-2014 GMC Savana6 Cyl 4.3L, 8 Cyl 5.0L, 8 Cyl 5.7L1 TON CARGO EXPRESS, 1 TON CARGO SAVANA, 1 TON COMMERCIAL/RECREATIONAL VEHICLE EXPRESS, 1 TON COMMERCIAL/RECREATIONAL VEHICLE SAVANA, 1 TON PASSENGER, 1/2 TON CARGO, 1/2 TON CARGO EXPRESS, 1/2 TON CARGO SAVANA, 1/2 TON PASSENGER EXPRESS, 1/2 TON PASSENGER SAVANA, 3/4 TON CARGO EXPRESS, 3/4 TON CARGO SAVANA, 3/4 TON PASSENGER EXPRESS, 3/4 TON PASSENGER SAVANA
    1999-2013 GMC Sierra6 Cyl 4.3L1500 EXTENDED CAB LONG BOX, 1500 EXTENDED CAB SHORT BOX, 1500 EXTENDED CAB STANDARD BOX, 1500 REGULAR CAB LONG BOX, 1500 REGULAR CAB STANDARD BOX, 3500 CHASSIS REGULAR CAB 137.0, CLASSIC 1500 EXTENDED CAB LONG BOX, CLASSIC 1500 EXTENDED CAB SHORT BOX, CLASSIC 1500 EXTENDED CAB STANDARD BOX, CLASSIC 1500 REGULAR CAB LONG BOX, CLASSIC 1500 REGULAR CAB STANDARD BOX, CLASSIC 3500 CHASSIS REGULAR CAB 137.0, EXTENDED CAB 5'8" BOX 1/2 TON, EXTENDED CAB 6'6" BOX 1/2 TON, EXTENDED CAB 8' BOX 1/2 TON, REGULAR CAB 6'6" BOX 1/2 TON, REGULAR CAB 8' BOX 1/2 TON
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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 12632948 fits your vehicle.
    Posted and answered by GM Parts Specialist Julian
    Q:
    How to Troubleshoot, Replace, and Maintain a Thermostat on Chevrolet Express? Posted by Meshilem B.
    A:
    When replacing the thermostat it is important to check the coolant level, drive belt tension, and temperature gauge (or light) operation. The housing cover should be reattached and tightened to the proper torque specifications. The hose should be reattached and the hose clamp should be tightened securely. Finally, start the engine and allow it to reach a normal operating temperature to check for leaks.
    You can Select Your Vehicle to see complete installation and repair tips.
    Answered by GM Parts Specialist Julian / Aug 27, 2022
    Q:
    What is the opening temperature for this thermostat? Posted by Ron Y.
    A:
    This thermostat opens at 180 degrees
    Answered by GM Parts Specialist Matt / Feb 26, 2021

Genuine GM Part 12632948, the Right Choice

To ensure reliability, purchase GM part # 12632948 Thermostat. It is sometimes referred to as GMC Thermostat. 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 GMC Sierra, Suburban, Yukon models.

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