2006 gmc envoy_slt
My old Envoy was a 2005 XL 4x4 with the I6 and my new Envoy is a 2006 standard length 4x2 but I still have the I6. Could I use my pcm that I purchased for my old Envoy in my new Envoy? I purchased my tune from pcmforless and they are closed for the holidays. Also, do you know if they offer free upgrades on the tunes so if I do need a new tune will they tunes the pcm for free? I thought I remember them sayingthey would when I purchased it originally.