The ohms have to be the same or else the amp will overheat and/or cut out. I would guess the old sub was an 8ohm. You'll need a new amp, or a sub with the correct ohms. The odds of mounting the new amp in the same place is pretty slim since the factory amp was made to go there. You could always remote mount the amp.
I believe GM uses 10 Ohm speakers, find anp that is compatible with that impedance. That is all I can offer.I believe GM uses 10 Ohm speakers, find anp that is compatible with that impedance. That is all I can offer.
Answers & Comments
The ohms have to be the same or else the amp will overheat and/or cut out. I would guess the old sub was an 8ohm. You'll need a new amp, or a sub with the correct ohms. The odds of mounting the new amp in the same place is pretty slim since the factory amp was made to go there. You could always remote mount the amp.
The impedance is wrong, will not work.
I believe GM uses 10 Ohm speakers, find anp that is compatible with that impedance. That is all I can offer.