coil pak 1,3 & 5 not functioning after I changed them?

Asked by Guru9PRXGV Jul 03, 2022 at 12:40 PM about the 2009 GMC Acadia SLE-1 AWD

Question type: Maintenance & Repair

checked the coil paks after I changed 1,3 &5 still not functioning.. why is this?
is ciol pak 1,3 & 5by the firewall?

1 Answer


Did you check the coils fuses, wiring, connectors. One wire will be battery voltage when the key is on, the other will be a trigger signal from the computer.

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