I put this together some years ago:

A new system of model identification was introduced by G.M. of Canada in 1935, and this system was used up to 1965, with the first digit indicating the Model Year.  This new system also applied to Trucks: Chevrolet, G.M.C., Pontiac, Maple Leaf.

Each assembled marque was allocated a two digit code for each make and chassis model, with the second two digits representing the body style. The chassis number or serial therefore comprised of a Year Digit, and then four digits for the Model Type, and then a sequential number which was the number allocated to that vehicle in sequence on the line, starting with 0001 or later 00001.

Also, the letter S was added after the first five digits in a few cases to identify Special Chassis. All chassis were sourced from Oshawa until 17 December 1937 when Regina, Saskatchewan, Plant re-opened for the second time, and wheras Oshawa serials all started with 0 followed by the sequential, Regina serials started with 8 so that the first produced vehicle was allocated 8001 or 80001, though no Regina-built vehcles were meant for export, so this separate numbering system should not appear on any imported chassis, imported when new.

AS AT 1942 THE ACCUMULATED TOTAL OF G.M. OF CANADA MODEL NUMBERING CODES WAS AS FOLLOWS:

CHEVROLET MASTER SERIES 1935-37                        CODE NO. 10

CHEVROLET STANDARD SERIES 1935-37                   CODE NO. 12

CHEVROLET MASTER SERIES 193N                       CODE NO. 10

CHEVROLET MASTER DE LUXE 193N                   CODE NO. 12

PONTIAC EIGHT SERIES 1935, 1941/2                      CODE NO. 20

PONTIACSIX SERIES 1935                                          CODE NO. 21

PONTIACEIGHT SERIES 1935                                    CODE NO. 22

PONTIACSIX SERIES 1939-42                                     CODE NO. 22

PONTIACARROW DELUXE 1940                                CODE NO. 22S

PONTIACSIX SERIES 1936/7                                       CODE NO. 26

PONTIACSIX [CHEVROLET ENGINED]                  CODE NO. 25

PONTIACEIGHT SERIES 1936-40                               CODE NO. 28

PONTIACEIGHT SERIES 1940                                    CODE NO. 29

OLDSMOBILE SIX SERIES 1939-42                                 CODE NO. 35

OLDSMOBILE SIX SERIES                                               CODE NO. 36

OLDSMOBILE EIGHT SERIES                                         CODE NO. 38

OLDSMOBILE EIGHT SERIES 1940-42                           CODE NO. 39

McLAUGHLIN-BUICK 1941 SPECIAL SERIES               CODE NO. 42

McLAUGHLIN-BUICK 40 SERIES                                    CODE NO. 44

McLAUGHLIN-BUICK 50 SERIES                                    CODE NO. 45

McLAUGHLIN-BUICK 60 SERIES                                    CODE NO. 46

McLAUGHLIN-BUICK ROADMSTER SRS 1940-42         CODE NO. 47

McLAUGHLIN-BUICK 80 SERIES                                    CODE NO. 48

McLAUGHLIN-BUICK 90 SERIES                                    CODE NO. 49

LA SALLE 2ND 1935, 1936-7 SERIES                               CODE NO. 50

CADILLAC V-8 60 SERIES                                                CODE NO. 60

CADILLAC V-8 65 SERIES                                                CODE NO. 65

CADILLAC V-8 70 SERIES                                                CODE NO. 70

CADILLAC V-8 75 SERIES                                                CODE NO. 75

CADILLAC V-12 80 SERIES                                              CODE NO. 80

CADILLAC V-12 85 SERIES                                              CODE NO. 85

[CADILLAC V-16 90 SERIES                                             CODE NO. 90]

CHEVROLET AND MAPLE LEAF TRUCKS USED THE FIRST DIGIT 1 AND THEN A SECOND DIGIT

G.M.C. TRUCKS USED 9 AND THEN A SECOND DIGIT

CANADIAN MILITARY PATTERN TRUCKS USED 8 FOLLOWED BY A SECOND DIGIT, 1940-44 MODEL YEARS

 These Model numbers should be followed by the next two digits as follows:

BODY TYPE NUMBERS

00, SERIES; COACH, 01; CHASSIS ONLY, 16; C.K.D. CHASSIS KITS 26; SEDAN DELIVERY 71 and 73; DELUXE COACH, 81; COACH WITH TRUNK /TOWN SEDAN, 11; DELUXE COACH WITH TRUNK, 91; ROADSTER WITH RUMBLE SEAT, 46; SEDAN, 09; SEDAN WITH TRUNK, 19; DELUXE SEDAN, 89; DELUXE SEDAN WITH TRUNK, 99; DELUXE CONVERTIBLE SEDAN WITH TRUNK OR TOURING PHAETON CONVERTIBLE, 29; PHAETON, 56; PHAETON CHASSIS, 06; 7-PASSENGER SEDAN, 03; 7-PASSENGER DELUXE IMPERIAL SEDAN, 13; 7-PASSENGER DELUXE SEDAN, 23; 2-PASSENGER COUPE WITH SOLID QUARTER, 07; 4-PASSENGER COUPE WITH SOLID QUARTER AND RUMBLE SEAT, 87; 4-PASSENGER DELUXE COUPE WITH SOLID QUARTER AND RUMBLE SEAT, 57; 4-PASSENGER CONVERTIBLE COUPE WITH RUMBLE SEAT, 67; IMPERIAL TOURING SEDAN 33; FORMAL SEDAN, 09F; TOWN SEDAN TOURER [5-PASSENGER FOURSOME TOURER], 39; TOWN CAR [7-SEAT FOURSOME TOURER] 43 or 1938 ON, 53; CONVERTIBLE SEDAN 49; COUPE, 27; 2-PASSENGER COUPE 57 AND 5-PASSENGER COUPE 57B; 5-PASSENGER FORMAL SEDAN TOURER 59; 7-PASSENGER FORMAL SEDAN TOURER 33F; 8-PASSENGER BUSINESS TOURING SEDAN, 23L; 8-PASSENGER BUSINESS IMPERIAL TOURING SEDAN 33L; SEDAN, 69, and STATION WAGON, [61 (WOOD) AND 62 (STEEL)] AND 99; ROYAL TOURING CAR, 29.

AND S AFTER THE MODEL CODE INDICATES 'SPECIAL', E.G. SPECIAL SEDAN, F 'FORMAL SEDAN', ETC. D 'DELUXE SEDAN', ETC., B 'BUSINESS' AND P 'PICKUP COUPE', L 'LENGTHENED CHASSIS'...

-- Edited by Oracle on Saturday 18th of June 2011 10:43:38 AM