Manuals through 2025 now available!
Our trusted friends have launched a new website named LEMON, which has newer manuals. It also contains all the CHARM manuals.
LEMON is the logical successor to CHARM, I recommend you try it!
Link:
lemon-manuals.la
Spark Plug: Application and ID
Spark Plug Type
GM P/N 12571164 AC Delco P/N 41-985