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Chevrolet 12632948 Thermostat,Engine Coolant

1996-2014 Chevrolet

GM 12632948 Thermostat,Engine Coolant
  • Part Description
    THERMOSTAT, Engine Coolant Temperature
  • Replaces
    12551472, 12257859, 12563335, 12597583, 12557859
  • Manufacturer
    General Motors
Customer Questions & Answers
$27.20 MSRP: $51.32
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  • Product Specifications

    BrandGenuine Chevrolet
    Manufacturer Part Number12632948
    Part DescriptionTHERMOSTAT, Engine Coolant Temperature
    Other NamesThermostat
    Item Dimensions3.1 x 3.2 x 3.1 inches
    Item Weight1.20 Pounds
    ConditionNew
    Fitment TypeDirect Replacement
    Replaces12551472, 12257859, 12563335, 12597583, 12557859
    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
    1996-2005 Chevrolet Astro6 Cyl 4.3LVAN ASTRO
    1996-2005 Chevrolet Blazer6 Cyl 4.3L2 DOOR, 4 DOOR
    1996-1999 Chevrolet 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 Chevrolet 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 Chevrolet 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
    1996-2014 Chevrolet Express6 Cyl 4.3L, 8 Cyl 5.0L, 8 Cyl 5.7L1 TON CARGO EXPRESS, 1 TON COMMERCIAL/RECREATIONAL VEHICLE EXPRESS, 1 TON PASSENGER, 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 PASSENGER EXPRESS
    1996-1999 Chevrolet 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 Chevrolet 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 Chevrolet 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
    1996-1999 Chevrolet P306 Cyl 4.3L, 8 Cyl 5.7LCHASSIS 1 TON MOTOR HOME HEAVY DUTY, CHASSIS DELIVERY, CHASSIS DELIVERY CUTAWAY, CHASSIS MOTOR HOME, CHASSIS MOTOR HOME CUTAWAY, MOTOR HOME CHASSIS 1 TON
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Customer Questions & 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 12632948 fits your vehicle.
Posted by GMPartsGiant Specialist
Q:
How to replace a thermostat in a Chevrolet C1500? Posted by Customer
A:
It is important not to drive the vehicle without a thermostat as it will cause the computer to stay in open loop, resulting in decreased emissions and fuel economy. Before condemning the thermostat, check the coolant level, drivebelt tension, and temperature gauge (or light) operation. If the engine takes a long time to warm up, the thermostat is likely stuck open and should be replaced. If the engine runs hot and the upper radiator hose isn't hot, the thermostat is probably stuck shut and should be replaced. If the upper radiator hose is hot, it indicates that the coolant is circulating and the thermostat is open. In cases where the engine has been overheated, there may be damage such as leaking head gaskets, scuffed pistons, and warped or cracked cylinder heads. To replace the thermostat, drain about three quarts of coolant from the radiator until the level is below the thermostat housing. Disconnect the upper radiator hose from the thermostat housing cover, remove the nuts/bolts, and lift off the cover. It may be necessary to move the belt tensioner bracket aside and tap the cover with a soft-face hammer to break the gasket seal. Take note of how the thermostat is installed, then lift it out. Use a scraper or putty knife to remove any old gasket material and sealant from the mating surfaces, being careful not to let any fall into the coolant passages. Clean the mating surfaces with lacquer thinner or acetone. Apply a thin layer of ATV sealant to the gasket mating surfaces of the housing and cover, and install the new thermostat in the engine with the correct end facing up. Position a new gasket on the housing, ensuring the holes line up with the bolt holes. Carefully position the cover on the housing and install the bolts, tightening them to the specified torque without overtightening to avoid distortion. Reattach the radiator hose to the cover and tighten the clamp. It is recommended to check and replace hoses and clamps at this time. Refill the system, then run the engine and carefully check for any leaks.
Posted by GMPartsGiant Specialist
Q:
How to remove and replace a thermostat in a Chevrolet Astro's cooling system? Posted by Customer
A:
Before condemning the thermostat, it is important to check the coolant level, drivebelt tension, and temperature gauge or light operation. If the engine takes a long time to warm up, it is likely that the thermostat is stuck open and should be replaced. On the other hand, if the engine runs too hot and the upper radiator hose is not hot, it indicates that the thermostat is stuck closed and needs to be replaced. However, if the upper radiator hose is hot, it means that the coolant is circulating and the thermostat is open. It is worth noting that if an engine has been overheated, there may be damage such as leaking head gaskets, scuffed pistons, and warped or cracked heads. To remove the thermostat, start by disconnecting the negative cable from the battery and draining about two quarts of coolant from the cooling system. Then, remove the air cleaner assembly and detach the upper radiator hose from the thermostat housing cover fitting. Remove the bolts and detach the thermostat housing cover and gasket. Lift out the thermostat, ensuring to note its installation orientation. Clean the gasket mating surfaces with a gasket scraper and lacquer thinner or acetone to remove any old gasket material and sealant. To install the new thermostat, apply a thin layer of RTV sealant to the gasket mating surfaces of the housing and cover. Install the new thermostat in the housing, making sure the correct end faces up. Position a new gasket on the housing and align the bolt holes. Carefully position the cover on the housing and tighten the bolts to the specified torque. Reattach the radiator hose to the cover fitting and tighten the hose clamp. It is recommended to check and replace all cooling system hoses and clamps at this time. Finally, refill the system, run the engine, and carefully check for any leaks.
Posted by GMPartsGiant Specialist
Q:
What are some important things to check before assuming the thermostat is to blame for a cooling system problem of the 2007 Chevrolet Silverado? Posted by Customer
A:
It is important to check the coolant level, drivebelt tension, and temperature gauge (or light) operation.
Posted by GMPartsGiant Specialist
See expert answers on similar Thermostat
Q:
How should you install the new thermostat of the 1995 Chevrolet S10? Posted by Customer
A:
Ensure the correct end faces out, with the spring directed toward the engine.
Posted by GMPartsGiant Specialist
See expert answers on similar Thermostat
Q:
How can you determine if the thermostat is stuck closed of the 2001 GMC Savana? Posted by Customer
A:
You can check the temperature of the radiator hose that leads from the thermostat to the radiator. If the hose is not hot, but the engine is, it is likely that the thermostat is stuck closed and should be replaced.
Posted by GMPartsGiant Specialist
See expert answers on similar Thermostat
Q:
What is the opening temperature for this thermostat? Posted by Customer
A:
This thermostat opens at 180 degrees
Posted by GMPartsGiant Specialist 26/2/2021
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 12632948, the Right Choice

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