How to replace the thermostat on a 4.3L engine on 2007 GMC Sierra 1500 Classic?

Replacement of thermostat on a 4.3L engine requires emptying the cooling system, air cleaner ducting, and inlet hose. Take out the water outlet, thermostat, clean the surfaces and replace the O-ring leak with a new one. Restrict the parts and supply the cooling system, avoiding leakages.

OEM 2007 GMC Sierra 1500 Classic Thermostat

Engine Coolant Thermostat

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2 Thermostats found

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2007 GMC Sierra 1500 Classic Thermostat Part Number: 89018168
$36.41 MSRP: $72.25
You Save: $35.84 (50%)
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Product Specifications
- Other Name: Engine Coolant Thermostat; Thermostat, Engine Coolant Temperature
- Replaces: 89017851
- Item Weight: 0.60 Pounds
- Item Dimensions: 3.6 x 2.6 x 2.2 inches
- Condition: New
- Fitment Type: Direct Replacement
- SKU: 89018168
- Warranty: This genuine part is guaranteed by GM's factory warranty.
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Fits the following 2007 GMC Sierra 1500 Classic Submodels:
- Denali, Hybrid, SL, SLE, SLT, WT | 8 Cyl 4.8 L GAS, 8 Cyl 5.3 L FLEX, 8 Cyl 5.3 L FULL HYBRID EV-GAS (FHEV), 8 Cyl 5.3 L GAS, 8 Cyl 6.0 L GAS
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2007 GMC Sierra 1500 Classic Thermostat Part Number: 12632948
$29.83 MSRP: $56.02
You Save: $26.19 (47%)
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Product Specifications
- Other Name: Thermostat, Engine Coolant Temperature
- Replaces: 12257859, 12563335, 12557859, 12597583, 12551472
- Item Weight: 1.30 Pounds
- Item Dimensions: 3.0 x 3.1 x 3.1 inches
- Condition: New
- Fitment Type: Direct Replacement
- SKU: 12632948
- Warranty: This genuine part is guaranteed by GM's factory warranty.
More Info
Fits the following 2007 GMC Sierra 1500 Classic Submodels:
- SL, WT | 6 Cyl 4.3 L GAS

2007 GMC Sierra 1500 Classic Thermostat

With a comprehensive array of OEM 2007 GMC Sierra 1500 Classic Thermostat, from fuel pumps to door handles, our website is a one-stop-shop for your needs. All our genuine 2007 GMC Sierra 1500 Classic Thermostat are backed by the manufacturer's warranty and are offered at competitive prices in the market. Rest assured, you can shop with complete confidence.

2007 GMC Sierra 1500 Classic Thermostat Parts and Q&A

Q: How to replace the thermostat on a 4.3L engine on 2007 GMC Sierra 1500 Classic?
A: Replacement of thermostat on a 4.3L engine requires emptying the cooling system, air cleaner ducting, and inlet hose. Take out the water outlet, thermostat, clean the surfaces and replace the O-ring leak with a new one. Restrict the parts and supply the cooling system, avoiding leakages.