SyTySoGT VIN Guide

The SyTySoGT VIN Guide tells us the truck number and can be used to determine if a GMC Syclone, Typhoon, or Sonoma GT truck is genuine. Most owners refer to their individual truck number and it is how SyTy Registry tracks and documents truck information into our database.

The Vehicle Identity Number (VIN) is a 17 character code that uniquely identifies the type of vehicle, its manufacturer, and origin. This US legal identifier also has a bar code representation to make instant electronic identification easier. The location of the VIN is standard at the bottom of the driver’s side windshield.

When GM went into production with the Syclone, Sonoma GT, and Typhoon, they received a unique VIN code that differed from the standard S-Series production line mostly due to the “incomplete” status it received. This incomplete indicator was assigned in the VIN because the SyTySoGTs did not receive final assembly in Shreveport, LA but were later finished with Production Automotive Services (PAS) in Troy, Michigan.

VIN IDENTIFICATION

The VIN sequence for all production Syclone, Sonoma GT, and Typhoons are as follows:

1991 SYCLONE – 1GDCT14ZXM880xxxx

1992 SONOMA GT – 1GDCS14W9N0820xxx

1992 TYPHOON – 1GDCT18Z1N081xxxx

1993 TYPHOON – 1GDCT18Z1P081xxxx

The xxxx is the four digit series number ranging from 0001 to 2995 for Syclones (which also includes the Marlboro and Saudi Syclones), 001 – 806 for 1992 Sonoma GTs, 0001 to 2497 for 1992 Typhoons and 0001 to 2200 for 1993 Typhoons.

This 4 digit series number is also used as the unique identification truck number within the SyTySoGT community and how ISTR archives individual truck information.

Unfortunately it isnt possible to directly correlate the PAS production number against the VIN.

KNOWN VIN LOCATIONS

• Dashboard – Lower driver side corner behind the windshield, standard location for VIN plate.
• PAS Decal – Located inside driver’s door jam next to door latch pin.
• Engine Block – located on the rear of the block, driver side, near the head. 8 digits are stamped into a flat area on the block.
• Top of frame – VINs have been found on the topside of the frame rail, driver side usually above the area of the fuel filter. Usually covered in dirt or undercoating, proceed with care to expose.
• Transmission Bellhousing – some trucks have 8 digits of the VIN stamped into the bellhousing
• Glovebox SPID Decal – Located on the bottom of the inside of the glovebox

VIN DECODE TABLE

The table below gives a full break down of each individual character position:

Position 1	1 – US built (82-92) 2 – Canadian built (82-92) 3 – Mexico built (85-92) 4 – US built (89-92) J – Japan built (82, 89-92)
Position 2	C – CAMI/GM of Canada G – General Motors G – Suzuki (89-92) 8 – Isuzu (89-92)
Position 3	A – Chevy Bus (van with 4th seat) (82-92) B – Chevy Incomplete (82-92) C – Chevy Truck (82-92) D – GMC Incomplete (82-92) E – Cadillac Incomplete (82-90) G – Cadillac Incomplete Coaches (86,87) H – Oldsmobile APV (90-92) J – GMC Bus (van with 4th seat) (87-92) K – GMC MPV (87-92) L – Buick Incomplete (89-90) M – Pontiac MPV (90-92) N – Chevy MPV (87-92) T – GMC Truck (82-91) Y – Luv Incomplete (82) Y – Pontiac Truck (90) Z – Luv Truck (82) 0 – GMC Bus (van with 4th seat) (82-86, 90-92) 5 – GMC MPV (82-86) 8 – Chev MPV (82-86)
Position 4 (GVWR Brake System)	B – 3001-4000 lbs (82-92) C – 4001-5000 lbs (82-92) D – 5001-6000 lbs (82-92) E – 6001-7000 lbs (82-92) F – 7001-8000 lbs (82-92) G – 8001-9000 lbs (82-92) H – 9001-10000 lbs (82-92) J – 10001-14000 lbs (82-92) K – 14001-16000 lbs (82-92)
Position 5 (Line and Chassis Type)	B – Special Body (Buick) 4×2 (89,90) C – Conventional cab 4×2 (82-86, 88-92) D – Military truck 4×4 (83-92) E – Compact Cab 4×2 G – Van, full size (82-92) H – Chasis cutaway 4×2 (85-92) K – Conventional cab 4×4 (82-92) L – Luv 4×2 (82) L – Small Van 4×4 (90-92) M – Small Van 4×2 (85-92) P – Forward control 4×2 (82-92) R – Luv 4×4 (82) R – Conventional cab (87-91) S – Small conventional cab 4×2 (82-91)* T – Small conventional cab 4×4 (83-92)* U – All purpose vehicle 4×2 (90) V – Conventional cab 4×4 (87-91) W – El Camino, Caballero 4×2 (82-84) W – El Camino, Panel Delivery and Caballero (85-87) Z – Special body 4×2 (82-88) Z – Special body (Cadillac) (89-91) 4 – 4500 Series (90-91)* Includes Blazer, Bravada, and Jimmy
Position 6	0 – All Purpose Vehicle (90-91) 1 – 1/2 ton (82-92) 2 – 3/4 ton (82-92) 3 – 1 ton (82-92) 8 – 1/2 ton El Camino/Caballero (82-87) 9 – Cadillac Commercial body/chasis (82-88) 9 – Cadillac & Buick Commercial body/chasis (89-90) S – Chassis only (91)
Position 7 (Body Type)	0 – Pickup Deliver (El Camino Caballero) (82-87) 0 – Chassis Only (88-91) 0 – Cadillac Short Sill Cowl (82-84) 0 – Cadillac/Buick/Chevy Commercial Body/Chassis (85-90) 1 – Hi-Cube and Cutaway Van (GMC Magnavan and chopped van) (82-92) 1 – Chassis 4×2 (91) 2 – Forward Control (82-92) 3 – Four door cab (82-91) 3 – Four Door Cab/Utility (90-92) 4 – Two door cab (82-92) 4 – Four Door Cab/Chassis (90) 5 – Van (short) (82-92) 6 – All Purpose Vehicle 6 – Suburban (82-92) 7 – Motor Home Chassis (82-92) 8 – Utility 2 Door (Blazer, Jimmy, Bravada) (82-92) 9 – Stake (82-87) 9 – Extended Cab/Van (88-92)
Position 8 (Engine Code, Size, Type, Fuel System, RPO)	A – 1.9 L4 2bbl LR1 (82-85) A – 2.5 L4 TBI L38 (92) B – 2.8 V6 2bbl LR2 (82-85) B – 4.3 V6 FI LU2 (90-91) C – 6.2 V8 Dsl LH6 (82-92) D – 4.1 V6 2bbl LE3 (82-85) D – 3.1 V6 FI (90) E – 2.5 L4 TBI LN8 (85) E – 2.5 L4 FI LN8 (86-91) E – 2.5 L4 TBI L38 (92) F – 5.0 V8 4bbl LF3 (82-86) F – 6.5 V8 Dsl L65 (92) H – 5.0 V8 4bbl LE9 (82-87) H – 5.0 V8 TBI L03 (88-92) J – 6.2 V8 Dsl LL4 (82-92) K – 5.7 V8 LPG LT9 (83-86) K – 5.7 V8 TBI L05 (88-92) L – 5.7 V8 4bbl LS9 (82-86) L – 3.9 L4 Dsl LST (89-91) M – 5.7 V8 4bbl LT9 (82-88) N – 1.8 L4 2bbl (82) N – 4.3 V6 4bbl LB1 (87-92) N – 7.4 V8 TBI L19 (87-92) P – 5.7 V8 2bbl LF7 (82-83) R – 2.8 V6 TBI LL2 (86-90) S – 2.2 L4 Dsl LQ7 (82-85) T – 4.8 L6 1bbl (82-90) U – 1.6 L4 TBI LS5 (89-90) V – 3.4 V6 Dsl (91) W – 7.4 V8 4bbl LE8 (82-90) W – 4.3 V6 CPI L35 (92) Y – 2.0 L4 2bbl LQ2 (83-85) Z – 4.3 V6 TBI LB4 (86-92)
Position 9	Check Digit
Position 10 (Model Year)	A thru H – (80-87) J thru N – (88-92) P – (93)
Position 11 (Truck & Bus Plant)	B – Baltimore, MD E – Pontiac, MI F – Flint, MI J – Janesville, WI T – Terrytown, NY V – Pontiac, MI Z – Ft. Wayne, IN 0 – Pontiac, MI 1 – Oshawa, ONT 2 – Moraine, OH 3 – Detroit, MI 4 – Scarborough, ONT 7 – Lordstown, OH 8 – Shreveport, LA
Position 12-17 (Truck & Bus Plant)	Production Sequence Number