How do I Test a GM Coil Pack? Find the male spade terminal parts on the coil pack. They will be the two metal parts in the middle that are smaller than the rest of the ones found on the pack. Turn the multimeter on. Attach the its red lead to the right terminal, then attach the black lead to the left terminal.
The coils are inexpensive, so I would not hesitate to replace one with marginally low resistance. If the replacement modules are failing in a manner that prevents the engine from starting, and the replacements are of good quality, I’d ask your service tech to take a very close look at the wiring connector that attaches to the module.