17 characters. Stamped on the dash + driver-side door jamb.
VIN
Decoded online via NHTSA vPIC. Demo: 1G1YY22G4X5101001 ('99 C5 LS1)
Manual Entry — for swap builds
For when the VIN says one thing and the engine bay says another.
Manual Entry — accuracy on you
Manual entry bypasses the lookup. Downstream numbers will be less accurate.
Year
Make
Model
Engine RPO
PCM
Don't know? Open VCM Scanner → Vehicle → ID and read the OS Number. Or leave blank — Scarecrow can usually infer it from year / make / model / RPO above.
Transmission
Plug in — Scarecrow reads it
Connect your MPVI3 (or compatible scanner) to OBD-II. Turn ignition to ON. Scarecrow pulls the Vehicle Profile straight from the ECU and asks about any mods.
Waiting for scanner
Plug your MPVI3 into the OBD-II port and turn ignition to ON.
Anything modified I should know about?
Plain English. Cam, heads, intake, exhaust, injectors, tune-already-flashed — whatever's on it. Leave blank if it's stock.
Has it been tuned before?
Pick from Year / Make / Model
Sourced from NHTSA vPIC. If we don't have your exact combo, Scarecrow will ask in chat. VIN entry is more accurate when you can grab it.
Year
Make
Model
Engine
Transmission
Final drive ratio
No free public DB carries per-trim final drive. Scarecrow asks in chat or pulls it during cross-check.