2003-2024 Chevrolet Express Coolant Flush Torque Specs

4.3L V6

Applies to 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021, 2022, 2023, and 2024 Chevrolet Express

Labor Time:1.2 hours

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Torque Values (16 specifications)

Component	Nm	lb-ft	Notes
Bleed Screw	7	5	Open during fill
Bleed Screw	7	5	Open during fill
Coolant Hose Clamps	4	3	—
Coolant Hose Clamps	4	3	—
Drain Petcock	7	5	Hand tight
Drain Petcock	5	4	—
Drain Petcock	5	4	—
Drain Petcock	7	5	Hand tight
Drain Plug	15	11	—
Drain Plug	15	11	—
Hose Clamps	4	3	—
Hose Clamps	4	3	—
Housing Bolts	14	10	—
⚠️ Housing Bolts	14	10	—
Pump Bolts	24	18	—
⚠️ Pump Bolts	24	18	—

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Common Questions

What is the torque spec for coolant flush on a 2003-2024 Chevrolet Express?

The primary torque specification for coolant flush on a 2003-2024 Chevrolet Express is 7 Nm (5 lb-ft). Note: Open during fill

How many torque specs are there for Chevrolet Express coolant flush?

There are 16 torque specifications for coolant flush on the 2003-2024 Chevrolet Express 4.3L V6, covering all related fasteners and components.