Fits: 2004.5 thru 2005 Chevy Silverado/GMC Sierra 2500HD/3500HD LLY Duramax Diesel

Glow plugs are one of the most important components when trying to start a diesel in cold weather.  Worn or inoperative glow plugs can cause a hard start or even check engine lights on today's newer trucks.

Includes:

• (1) GM Glow Plug, Part# 97326305

Replaces Part#:

• ACDelco 63G