GMC sierra 2002 5.3L 1500

[Dcas3443]

I recently removed a spark plug from my sierra to identify what was in the truck part # 41-974 . I have scoured all sites to find spark plugs that I can use on my truck that are iridium I keep having 41-110 show up however they say it is not compatible with my vehicle. Does anyone know which plugs I can use for my vehicle .

 

[Miami-Dade]

@Dcas3443 Moved you here from Site News.
Welcome from Miami Beach!

 

[Fless]

Welcome to TYF.

A while back I messaged with GM about the plugs for my '04, and they said they no longer recommend the iridium plugs. They recommend 41-962 double platinum.

Other members here will have plug recommendations for you.

 

[SilverSport]

I also noted some time ago that the "OEM" spark plug replacements are the double platinum 41-962 AC Delco

Bill

 

[afpj]

I also read that GM changed their recommendations for the GMT800 regarding spark plugs, and also a change in gap size from the original label. Do the 41-962s have to be regapped? I can't remember that part.