Back to 2003 Chevrolet Astro

2003 CHEVROLET ASTRO

4.3L V6 Vortec•RWD•AUTOMATIC•gas

3 active safety recalls on this vehicle — view recalls

Repairs0 Labor564 Torque4690 Fluid7 DTC762 Battery1 Maintenance0 Recalls3

cooling

Coolant Bypass Pipe Torque Specs

for 2003 Chevrolet Astro 4.3L V6 Vortec · RWD

Units

9 fasteners

Seq

Component

Torque

Angle

—

Bleed Screw

Open during fill

5 lb-ft · 7 Nm

—

—

Coolant Drain Plug

11 lb-ft · 15 Nm

—

—

Drain Petcock

Hand tight

6 lb-ft · 8 Nm

—

—

Fan Bolts

9 lb-ft · 12 Nm

—

—

Hose Clamps

2 lb-ft · 3 Nm

—

—

Housing Bolts

Critical

10 lb-ft · 14 Nm

—

—

Pump Bolts

Critical

Torque in sequence

21 lb-ft · 28 Nm

—

—

Thermostat Housing Bolts

11 lb-ft · 15 Nm

—

—

Water Pump Bolts

Critical

Tighten in criss-cross pattern

18 lb-ft · 25 Nm

—

Building an app?

Free API access to all this data — 50 requests/day, no card required.

Get an API key →

Run a shop?

Manage repairs, estimates, and customers with ShopBase — $249/mo, all features included.

Try ShopBase →