Make sure this part fits

GM 12559338 Thermostat,Engine Coolant

1988-1996 GM

Customer Questions & Expert Answers (3)
GM 12559338 Thermostat,Engine Coolant
  • Part Description
    THERMOSTAT, Engine Coolant Temperature
  • Replaces
    10154622, 12551496
  • Manufacturer
    General Motors
  • Manufacturer's Notes
    This part is discontinued.
Make sure this part fits
$39.15 MSRP: $70.21
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Currently Unavailable

Due to manufacturer supply shortage, this item isn’t currently available for ordering.

  • Related Parts
  • Product Specifications
  • Vehicle Fitment
  • Customer Questions & Expert Answers
  • Product Specifications

    BrandGenuine GM
    Manufacturer Part Number12559338
    Part DescriptionTHERMOSTAT, Engine Coolant Temperature
    Other NamesThermostat
    Item Dimensions3.1 x 3.1 x 3.0 inches
    Item Weight0.60 Pounds
    ConditionNew
    Fitment TypeDirect Replacement
    Replaces10154622, 12551496
    ManufacturerGeneral Motors
    SKU12559338
    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
    1992-1994 Chevrolet Blazer8 Cyl 6.5L Diesel1/2 TON
    1988-1995 Chevrolet C15008 Cyl 6.2L Diesel, 8 Cyl 6.5L DieselC1500 EXTENDED CAB LONG BOX, C1500 EXTENDED CAB STANDARD BOX, C1500 REGULAR CAB LONG BOX, C1500 REGULAR CAB STANDARD BOX
    1988-1995 Chevrolet C25008 Cyl 6.2L Diesel, 8 Cyl 6.5L DieselC2500 EXTENDED CAB LONG BOX, C2500 EXTENDED CAB STANDARD BOX, C2500 REGULAR CAB
    1988-1995 Chevrolet C35008 Cyl 6.2L Diesel, 8 Cyl 6.5L DieselC3500 CAB CHASSIS 135.5, C3500 CAB CHASSIS 159.9, C3500 CAB CHASSIS 183.5, C3500 CREW CAB LONG WHEELBASE, C3500 EXTENDED CAB, C3500 REGULAR CAB
    1988-1995 Chevrolet K15008 Cyl 6.2L Diesel, 8 Cyl 6.5L DieselK1500 EXTENDED CAB LONG BOX, K1500 EXTENDED CAB STANDARD BOX, K1500 REGULAR CAB LONG BOX, K1500 REGULAR CAB STANDARD BOX
    1988-1995 Chevrolet K25008 Cyl 6.2L Diesel, 8 Cyl 6.5L DieselK2500 EXTENDED CAB LONG BOX, K2500 EXTENDED CAB STANDARD BOX, K2500 REGULAR CAB
    1988-1995 Chevrolet K35008 Cyl 6.2L Diesel, 8 Cyl 6.5L DieselK3500 CAB CHASSIS 135.5, K3500 CAB CHASSIS 159.9, K3500 CREW CAB LONG WHEELBASE, K3500 EXTENDED CAB, K3500 REGULAR CAB
    1996 Chevrolet P308 Cyl 6.5L DieselCHASSIS DELIVERY, CHASSIS DELIVERY CUTAWAY, CHASSIS MOTOR HOME, CHASSIS MOTOR HOME CUTAWAY, MOTOR HOME CHASSIS 1 TON
    1992-1995 Chevrolet Suburban8 Cyl 6.5L Diesel1/2 TON, 3/4 TON
    1995 Chevrolet Tahoe8 Cyl 6.5L DieselCLASSIC 2 DOOR 1/2 TON, CLASSIC 4 DOOR 1/2 TON
    View More
  • Customer Questions & Expert Answers

    Q:
    I am wonder if this is complete and correct part for my vehicle. Posted by GMPartsGiant Specialist
    A:
    You can Select Your Vehicle to check if 12559338 fits your vehicle.
    Posted by GMPartsGiant Specialist
    Q:
    How to replace a thermostat in a Chevrolet C1500 and K1500? Posted by Customer
    A:
    Don't drive without a thermostat; it impacts emissions and fuel economy. Before replacing the thermostat, inspect coolant level, drivebelt tension, and gauge operation. A slow-warming engine indicates an open thermostat, while an overly hot engine with a cool upper radiator hose suggests a closed one. Overheating can cause damage like leaking head gaskets and warped cylinder heads. To replace the thermostat, drain some coolant from the radiator until below the thermostat housing. Disconnect the upper radiator hose, remove the housing cover, and note the thermostat's position. Clean off old gasket remnants, then clean the surfaces with acetone. Apply ATV sealant, position the new thermostat, and attach a new gasket. Secure the cover, reattach the hose, and refill the coolant system. After running the engine, check for leaks.
    Posted by GMPartsGiant Specialist
    Q:
    How do you replace the thermostat in the 1990 Chevrolet C1500? Posted by Customer
    A:
    Begin by draining about three quarts of coolant from the radiator until the level is below the thermostat housing.
    Posted by GMPartsGiant Specialist
    See expert answers on similar Thermostat
    If you have any questions about this product, please don't hesitate to ask us. We will be happy to help you!

Genuine GM Part 12559338, the Right Choice

To ensure reliability, purchase GM part # 12559338 Thermostat,Engine Coolant. It is sometimes referred to as GM 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 Chevrolet Blazer, P30, Tahoe models. It fits GMC C2500, Suburban, Yukon.

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