Fits: 2020 Chevy Silverado/GMC Sierra 1500 LM2 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 Plugs (55490594)

Replaces:

• ACDelco 69G

DmaxStore Notes:

• GM recommends replacing the glow plugs if pulled from the bore
• New plugs will need to be programmed once installed
• Whenever replacing a ceramic glow plug, it is required to use a glow plug hole bore cleaning tool to remove the soot build up on the inside of the glow plug hole. If not, when installing a new glow plug, the soot could "side load" and induce a premature failure. Recommend using tool DMAX-GPRT/EN-52074 Glow plug bore reamer.