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GM 12591881 Thermostat Assembly, Engine Coolant

2006-2011 GM

GM 12591881 Thermostat Assembly, Engine Coolant
  • Part Description
    THERMOSTAT, Engine Coolant Temperature
  • Manufacturer
    General Motors
Customer Questions & Answers
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  • Product Specifications

    BrandGenuine GM
    Manufacturer Part Number12591881
    Part DescriptionTHERMOSTAT, Engine Coolant Temperature
    Other NamesThermostat
    Item Dimensions3.2 x 2.1 x 2.1 inches
    Item Weight0.50 Pounds
    ConditionNew
    Fitment TypeDirect Replacement
    ManufacturerGeneral Motors
    SKU12591881
    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
    2009-2011 Buick Lucerne6 Cyl 3.9L, 6 Cyl 3.9L FlexCX 4 DOOR, CXL 4 DOOR, V6 CX/CXL 4 DOOR, V8 CXL/SUPER 4 DOOR, V8 SUPER SERIES 4 DOOR
    2006-2007 Buick Terraza6 Cyl 3.9L, 6 Cyl 3.9L FlexCROSSOVER SPORT VAN EXTENDED
    2006-2011 Chevrolet Impala6 Cyl 3.5L, 6 Cyl 3.5L Flex, 6 Cyl 3.9L, 6 Cyl 3.9L FlexLS, LS POLICE CAR, LT, LT 3.5, LTZ, SS
    2006-2010 Chevrolet Malibu6 Cyl 3.5L, 6 Cyl 3.5L Flex, 6 Cyl 3.9L4 DOOR HATCHBACK, 4 DOOR HYBRID, 4 DOOR NOTCHBACK, LS 4 DOOR HATCHBACK, LS 4 DOOR NOTCHBACK, LT 4 DOOR HATCHBACK, LT 4 DOOR NOTCHBACK, LTZ 4 DOOR HATCHBACK, LTZ 4 DOOR NOTCHBACK, MAXX SS 4 DOOR HATCHBACK, SS 4 DOOR NOTCHBACK
    2006-2007 Chevrolet Monte Carlo6 Cyl 3.5L, 6 Cyl 3.5L Flex, 6 Cyl 3.9LLS, LT, SS
    2006-2009 Chevrolet Uplander6 Cyl 3.9L, 6 Cyl 3.9L FlexCROSSOVER SPORT VAN, CROSSOVER SPORT VAN EXTENDED
    2006-2010 Pontiac G66 Cyl 3.5L, 6 Cyl 3.5L Flex, 6 Cyl 3.9LGT 2 DOOR CONVERTIBLE, GT 2 DOOR NOTCHBACK, GT 4 DOOR NOTCHBACK, GTP 2 DOOR CONVERTIBL, GTP 2 DOOR NOTCHBACK, GXP 2 DOOR NOTCHBACK, GXP 4 DOOR NOTCHBACK, SE 4 DOOR NOTCHBACK, SE1 2 DOOR NOTCHBACK, SE1 4 DOOR NOTCHBACK
    2006-2009 Pontiac Montana6 Cyl 3.9L, 6 Cyl 3.9L FlexCROSSOVER SPORT VAN, CROSSOVER SPORT VAN EXTENDED
    2007-2008 Saturn Aura6 Cyl 3.5LHYBRID 4 DOOR NOTCHBACK, XE 4 DOOR NOTCHBACK, XR 4 DOOR NOTCHBACK
    2006-2007 Saturn Relay6 Cyl 3.9LRELAY
    View More

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 12591881 fits your vehicle.
Posted by GMPartsGiant Specialist
Q:
How can you determine if the thermostat is stuck open for the 2006 Chevrolet Impala? Posted by Customer
A:
If the engine seems to be taking a long time to warm up, indicating a stuck open thermostat, it should be replaced with a new one.
Posted by GMPartsGiant Specialist
See expert answers on similar Thermostat
Q:
How to replace a thermostat in a cooling system for Chevrolet Impala,Monte Carlo? Posted by Customer
A:
Before assuming the thermostat is to blame for a cooling system problem, it is important to check the coolant level, drivebelt tension, and temperature gauge operation. If the engine seems to be taking a long time to warm up, indicating a stuck open thermostat, it should be replaced with a new one. On the other hand, if the engine runs hot and the lower radiator hose is not hot, it is likely that the thermostat is stuck closed, preventing coolant circulation. In this case, the thermostat should also be replaced. However, if the lower radiator hose is hot, it indicates that the coolant is flowing and the thermostat is open. The removal process for V6 and V8 engine models involves disconnecting the battery, draining the cooling system, removing the air filter housing duct, locating the thermostat housing, detaching the radiator hose, removing the thermostat housing cover, and removing the old seal. The installation process includes placing a new rubber seal on the replacement thermostat, installing the thermostat into the housing, attaching the thermostat housing cover, reattaching the radiator hose, and refilling the cooling system. Finally, the battery is reconnected, the engine is started, and the system is checked for leaks and proper thermostat operation.
Posted by GMPartsGiant Specialist
Q:
How do you replace the thermostat in the 2005 Pontiac G6? Posted by Customer
A:
To replace the thermostat in four-cylinder models, you need to disconnect the battery cable, drain the cooling system, loosen the hose clamps and detach the hoses from the thermostat housing cover, remove the thermostat cover, remove the old thermostat, install a new rubber gasket and thermostat, and reattach the radiator hose and refill the cooling system.
Posted by GMPartsGiant Specialist
See expert answers on similar Thermostat
Q:
Does this thermostat come with the gasket and housing? Posted by Customer
A:
No, this is just the thermostat itself
Posted by GMPartsGiant Specialist 22/4/2021
Q:
does this thermostat come with a gasket, or does it need to be ordered separate? Posted by Customer: 2010 Chevrolet Impala
A:
P # 12591881 WILL INCLUDE THE ORING SEAL AS WELL
Posted by GMPartsGiant Specialist 1/4/2019
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 12591881, the Right Choice

Your vehicle deserves only genuine OEM GM parts and accessories. To ensure reliability, purchase GM part # 12591881 Thermostat Assembly, Engine Coolant. It is sometimes referred to as GM Thermostat. Our GM parts and accessories are expedited directly from authorized GM dealers strategically located all across the U.S. and are backed by the manufacturer's 12 month, 12,000 mile warranty. OEM GM parts are the best for restoring your vehicle to factory condition performance. This part fits specific Buick Lucerne, Terraza models. It fits Chevrolet Impala, Malibu, Monte Carlo. It also fits Pontiac G6, Montana. This also fits Saturn Aura, Relay, Vue.

Affordable, reliable and built to last, GM part # 12591881 Thermostat Assembly, Engine Coolant stands out as the smart option. GMPartsGiant.com is your prime online source with the biggest and best selection of genuine GM parts and accessories at giant discounted prices. We have the OEM GM parts and accessories you need at the wholesale prices. GMPartsGiant.com has you covered no matter what type of GM vehicle you drive. For detailed Chevrolet parts information, click here.

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