Fahrgestellnumer

VIN 6 F 33 S 7 Q 153499

All Cadillacs again had a 13-symbol Vehicle Identification Number (VIN) on the forward lower edge of the windshield frame, visible through the windshield.

The first digit (“6”) identifies the Cadillac Division.

The second symbol denotes car line/series: 

• “S” Seville
• “D” DeVille
• “B” Fleetwood Brougham
• “F” Fleetwood limousine
• “L” Eldorado
• “Z” commercial chassis.

Digits three and four indicate body type: 

• “23” 4-door limousine with auxiliary seat
• “33” 4-door formal limousine with partition window
• “47” 2-door coupe
• “69” 4-door piliared sedan
• “90” commercial chassis (number identifies name of body builder)

Next comes the engine code: 

• “R” V8-350 EFI
• “S” V8-425 4 Bbl.
• “T” V8-425 EFI

Symbol six indicates model year (“7” 1977).

Seventh is an assembly plant code: 

• “Q” Detroit
• “E” Linden, NJ

At the end is a six-digit sequence number: 

• running from 100001 to 400000 for C-bodies and Eldos built in Detroit
• running from 450001 to 550000 for Sevilles from Detroit
• running from 600001 to 690000 for C-bodies built in Linden

A nine-digit derivative of the VIN appears on the engine.

A Body Number Plate has codes for model year, model number, trim combination, body number (assembly plant and sequence built), paint color(s), and a number-letter code that shows the date built.

That plate is mounted on the upper left cowl between hood rear seal and windshield except Eldorado, on left side of cowl next to hood rear bumper; and Seville,riveted to cowl above evaporator case.