Glow Plug / Intake Air Heater Mega Fuse, 175 Amp, LB7 Duramax | 2001 - 2004

If your glow plugs or intake air heater are not working on your Duramax, one of the problems could be a blown fuse. This 175 amp mega fuse protects the main power circuit to the glow plugs and intake air heater (IAH) on 2001-2004 Chevy Silverado and GMC Sierra 2500HD and 3500HD trucks with the 6.6L Duramax LB7.

Features

• 175 amp mega fuse
• Protects the main power circuit to the glow plugs and intake air heater

What's Included

• (1) 175 amp mega fuse

When to Replace

Replace the fuse if it has blown. A blown fuse cuts power to the glow plugs and intake air heater, which can cause hard starts in cold weather. Owners on the DuramaxDiesels forum report that a blown fuse can also turn on the check engine light. If the new fuse blows again, look for a short in the glow plug or intake air heater circuit before replacing it a second time.

Installation Tips

• The fuse is mounted under the plastic fuse panel cover in the under hood fuse block on the driver side fender.
• Disconnect the batteries before removing the fuse.

Related Parts

• Glow Plug Controller, LB7 Federal Emissions 2001-2004
• GM Glow Plug / Intake Air Heater Relay, LB7 Federal Emissions 2001-2004
• GM Glow Plug Rail (Bus Bar), LB7 2001-2004
• ACDelco 62G Glow Plug, Duramax 2001-2004

Frequently Asked Questions

Where is the fuse?
Under the plastic fuse panel cover in the under hood fuse block on the driver side fender.

What does it protect?
The main power circuit to the glow plugs and the intake air heater.

For warranty information, see our Warranty Policy.