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St. Jude Donor '03-'04-'05-'06-'07-'08-'09-'10-'11-'12-'13-'14-'15-'16-'17
If you have a Chevy dealership close by, they can run the VIN number and provide a ton of detailed information on the car. Including service history, recalls and option codes. There are some members here who can do it as well. There is also a build sheet somewhere in the car, but I can't remember where. Perhaps someone else can chime in on that.
From: "It's 106 miles to Chicago, we've got a full tank of gas, half a pack of cigarettes, it's dark, and
St. Jude Donor '03-'04-'05-'06-'07-'08-'09-'10-'11-'12-'13-'14-'15-'16-'17-‘18-'19
NCM Sinkhole Donor
Look at the RPO (regular production option) sticker affixed to the glovebox door. If you have F55 Magnetic Ride, it will list that along with FE1 for the soft ride suspension. If you have the Z51, it will list that along with the FE3. As previously mentioned by Cosmo - if you have the F55, there will be a selector switch on the console next to the traction control/active handling button. Z51 has no such switch.