Can I swap my 3.1 for 3.8

Asked by TMOEFASHO Mar 08, 2020 at 08:13 PM about the 2003 Pontiac Grand Prix SE

Question type: Maintenance & Repair

Can I replace my 3.1 motor with a 3.8
in my Pontiac Grandprix

1 Answer
155,455

james answered 4 years ago

You can but you need to replace the transmission and PCM as well. Hope that helps! Jim

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