2003-2024 Chevrolet Express Timing Chain 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:9.6 hours

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Torque Values (40 specifications)

Component	Nm	lb-ft	Notes
Cam Phaser Bolt	65	48	Apply threadlocker, hold cam stationary \| ⚠️ VERIFY SEQUENCE WITH SERVICE MANUAL
⚠️ Cam Phaser Bolt	65	48	Apply threadlocker, hold cam stationary \| ⚠️ VERIFY SEQUENCE WITH SERVICE MANUAL
Camshaft Bearing Cap Bolts	14	10	Tighten in sequence, 3 passes \| ⚠️ VERIFY SEQUENCE WITH SERVICE MANUAL
⚠️ Camshaft Bearing Cap Bolts	14	10	Tighten in sequence, 3 passes \| ⚠️ VERIFY SEQUENCE WITH SERVICE MANUAL
Camshaft Cap Bolts	14	10	Tighten in sequence from center outward, multiple passes \| ⚠️ VERIFY SEQUENCE WITH SERVICE MANUAL
⚠️ Camshaft Cap Bolts	14	10	Tighten in sequence from center outward, multiple passes \| ⚠️ VERIFY SEQUENCE WITH SERVICE MANUAL
Camshaft Position Sensor	10	7	⚠️ VERIFY SEQUENCE WITH SERVICE MANUAL
⚠️ Camshaft Position Sensor	10	7	⚠️ VERIFY SEQUENCE WITH SERVICE MANUAL
⚠️ Camshaft Sprocket Bolt	80	59	Hold cam with wrench on hex \| ⚠️ VERIFY SEQUENCE WITH SERVICE MANUAL
Camshaft Sprocket Bolt	80	59	Hold cam with wrench on hex \| ⚠️ VERIFY SEQUENCE WITH SERVICE MANUAL
⚠️ Crankshaft Position Sensor	10	7	⚠️ VERIFY SEQUENCE WITH SERVICE MANUAL
Crankshaft Position Sensor	10	7	⚠️ VERIFY SEQUENCE WITH SERVICE MANUAL
Crankshaft Pulley Bolt	180	133	Often TTY - check spec, may require impact \| ⚠️ VERIFY SEQUENCE WITH SERVICE MANUAL
⚠️ Crankshaft Pulley Bolt	180	133	Often TTY - check spec, may require impact \| ⚠️ VERIFY SEQUENCE WITH SERVICE MANUAL
Guide Bolts	24	18	—
⚠️ Guide Bolts	24	18	—
⚠️ Oil Drain Plug	35	26	Use new crush washer \| ⚠️ VERIFY SEQUENCE WITH SERVICE MANUAL
Oil Drain Plug	35	26	Use new crush washer \| ⚠️ VERIFY SEQUENCE WITH SERVICE MANUAL
Oil Pump Bolts	12	9	⚠️ VERIFY SEQUENCE WITH SERVICE MANUAL
⚠️ Oil Pump Bolts	12	9	⚠️ VERIFY SEQUENCE WITH SERVICE MANUAL
⚠️ Tensioner Bolt	20	15	—
Tensioner Bolt	20	15	—
⚠️ Timing Chain Guide Bolts	12	9	Replace if worn \| ⚠️ VERIFY SEQUENCE WITH SERVICE MANUAL
Timing Chain Guide Bolts	12	9	Replace if worn \| ⚠️ VERIFY SEQUENCE WITH SERVICE MANUAL
Timing Chain Idler Sprocket	25	18	⚠️ VERIFY SEQUENCE WITH SERVICE MANUAL
⚠️ Timing Chain Idler Sprocket	25	18	⚠️ VERIFY SEQUENCE WITH SERVICE MANUAL
Timing Chain Tensioner Bolt	25	18	Install with pin/clip to compress \| ⚠️ VERIFY SEQUENCE WITH SERVICE MANUAL
⚠️ Timing Chain Tensioner Bolt	25	18	Install with pin/clip to compress \| ⚠️ VERIFY SEQUENCE WITH SERVICE MANUAL
Timing Cover Bolts	14	10	—
⚠️ Timing Cover Bolts	14	10	—
Timing Cover Bolts - 10mm	45	33	Tighten in sequence \| ⚠️ VERIFY SEQUENCE WITH SERVICE MANUAL
⚠️ Timing Cover Bolts - 10mm	45	33	Tighten in sequence \| ⚠️ VERIFY SEQUENCE WITH SERVICE MANUAL
Timing Cover Bolts - 6mm	10	7	Tighten in sequence \| ⚠️ VERIFY SEQUENCE WITH SERVICE MANUAL
⚠️ Timing Cover Bolts - 6mm	10	7	Tighten in sequence \| ⚠️ VERIFY SEQUENCE WITH SERVICE MANUAL
Timing Cover Bolts - 8mm	25	18	Tighten in sequence \| ⚠️ VERIFY SEQUENCE WITH SERVICE MANUAL
⚠️ Timing Cover Bolts - 8mm	25	18	Tighten in sequence \| ⚠️ VERIFY SEQUENCE WITH SERVICE MANUAL
⚠️ VVT Solenoid Bolt	10	7	⚠️ VERIFY SEQUENCE WITH SERVICE MANUAL
VVT Solenoid Bolt	10	7	⚠️ VERIFY SEQUENCE WITH SERVICE MANUAL
⚠️ Valve Cover Bolts	10	7	Tighten in sequence \| ⚠️ VERIFY SEQUENCE WITH SERVICE MANUAL
Valve Cover Bolts	10	7	Tighten in sequence \| ⚠️ VERIFY SEQUENCE WITH SERVICE MANUAL

Other Jobs with Torque Specs

Common Questions

What is the torque spec for timing chain on a 2003-2024 Chevrolet Express?

The primary torque specification for timing chain on a 2003-2024 Chevrolet Express is 65 Nm (48 lb-ft). Note: Apply threadlocker, hold cam stationary | ⚠️ VERIFY SEQUENCE WITH SERVICE MANUAL

How many torque specs are there for Chevrolet Express timing chain?

There are 40 torque specifications for timing chain on the 2003-2024 Chevrolet Express 4.3L V6, covering all related fasteners and components.