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Old 11-10-2012, 05:11 PM
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in 2003 , GM changed the mhz rating and connector on the PCS on the valve body.

I have swapped in older design (pre 2003) into newer vehicles and had no problems or codes set.

I would think swap in the newer version into older design application vehicle , would be fine too. Have veriifed that
Dont worry how old you are... it is the mileage on your body that adds up.
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