Transmission ID and VIN Derivative Location. Pontiac Aztek

For 1990-2009 cars only

Makes 🢒 Pontiac 🢒 2003 🢒 Aztek - FWD 🢒 General Information 🢒 General Information 🢒 Transmission ID and VIN Derivative Location

Transmission ID and VIN Derivative Location Corvette T56 and 4L60-E

All engines and transmissions, as well as removable roof panels are stamped or laser etched with a partial Vehicle Identification Number (VIN), which was derived from the complete VIN. A VIN derivative contains the following nine positions:

•	Position 1 is the GM division identifier.

1 = Chevrolet

•	Position 2 is the model year code.

3 = 2003

•	Position 3 is the assembly plant code.

5 = Bowling Green, KY

•	Positions 4-9 contain the assembly plant sequential number for the vehicle.

A VIN derivative can be used to determine if a vehicle contains the original engine, transmission or removable roof panel, by matching the VIN derivative positions to their accompanying positions in the complete VIN:

•	VIN derivative position 1 = VIN position 3

•	VIN derivative position 2 = VIN position 10

•	VIN derivative position 3 = VIN position 11

•	VIN derivative positions 4-9 = VIN positions 12-17

Borg Warner T-56 Manual Transmission

The 6-speed manual transmission, the Borg Warner T-56 (RPO MM6), is stamped with a VIN derivative on the LH side of the transmission case.

Hydra-Matic 4L60E Automatic Transmission

The 4-speed overdrive automatic transmission, the Hydra-Matic 4L60-E (RPO M30), is stamped or laser etched with a transmission identification number and a VIN derivative.

The transmission identification (ID) number provides the transmission model and when it was built. The transmission ID number is located on the bottom of the case just rear of the oil pan.

VIN Location


(1)	VIN Derivative Optional Location LH
(2)	VIN Derivative Primary Location
(3)	VIN Derivative Optional Location RH
(4)	VIN Derivative Optional Location RH

The VIN derivative will be placed in one of four locations illustrated.

Transmission ID and VIN Derivative Location 4L60-E

Figure 1:

Toledo or Romulus Build


(1)	3 = 2003
(2)	Model
(3)	Hydra-Matic 4L60-E
(4)	Julian Date or Day of the Year
(5)	Shift Built, See Shift Build Chart
(6)	Serial Number
(7)	Case/Pan Frame Rail Location
(7)	Case/Pan Frame Rail Location
(8)	Optional Transmission ID Location, Tag Is Used as a Back-Up If Unable To Etch Case/Pan Area and To Bar Code Scan

Figure 2:

Ramos Arizpe, Mexico


(1)	3 = 2003
(2)	Model
(3)	Hydra-Matic 4L60-E
(4)	Plant of Manufacture, 4 is Ramos
(5)	Julian Date or Day of the Year
(6)	Shift Built, See Shift Build Chart
(7)	Transmission Serial Number
(8)	Optional Transmission ID Tag Location, Tag Is Used as a Back-Up If Unable To Etch Case/Pan Area and To Bar Code Scan
(9)	Case/Pan Frame Rail Area
(9)	Case/Pan Frame Rail Area

Figure 3:

Bar Code Label Contents


(1)	3 = 2003
(2)	Model
(3)	Hydra-Matic 4L60-E
(4)	Transmission Asm. as Shipped Number
(5)	3 = Model Year
(6)	Julian Date or Day of the Year
(7)	Letter After Julian Date Identifies the Plant Shift Build, See Shift Build Chart
(8)	Bar Code
(9)	Serial Number
(10)	Broadcast Code
(11)	Transmission ID
(12)	Build Location Y=Toledo, OH, R=Romulus, MI, 4=Ramos Arizpe, Mexico

Plant and Shift Build Chart

Plant	Build Line	1st Shift	2nd Shift	3rd Shift
Toledo, OH	ML1	J	W	X
	ML2	A	C	Not Used
	ML3	B	H	Not Used
	ML4	S	L	V
	ML5	K	E	Z
Romulus, MI	1	A	--	B
Ramos Arizpe, Mexico	1	A	--	--

Transmission ID and VIN Derivative Location 4T80-E


(1)	Calendar Year - 3 = 2003
(2)	Julian Date of the Year
(3)	Shift and Line Number
(4)	Calendar Year
(5)	Model
(6)	Serial Number in Base Code 31
(7)	Plant
(8)	Broadcast Date
(9)	Transaxle
(10)	Transaxle I.D. Tag Location
(11)	Transaxle Partial Vin Location

Transmission ID and VIN Derivative Location 4L80-E


(1)	Calendar Year
(2)	Julian Date of the Year
(3)	Shift and Line Number
(4)	Plant
(5)	Model
(6)	Location on Transmission

Transmission ID and VIN Derivative Location 4T40/4T45-E

All automatic transmissions have a metal identification (ID) nameplate (1) attached to the case exterior.


(1)	Transaxle
(1)	Transaxle
(2)	Calendar Year
(2)	Calendar Year
(3)	Julian Date or Day of the Year
(3)	Julian Date or Day of the Year
(4)	Shift and Line Number
(5)	Model Year
(5)	Model Year
(6)	Model
(6)	Model
(7)	Part Number
(8)	Serial Number in Base Code 34
(9)	Plant
(10)	Broadcast Code
(11)	Control Number
(12)	Serial Number

The Hydra-Matic 4T40-E transmission has a metal identification nameplate (1) attached to the case exterior.

The information on the nameplate assists the technician in servicing the transmission and ordering replacement parts from a GM Parts Catalog.

Additional transmission identification information is provided on the Service Parts Identification label. This label shows the Regular Production Options (RPO) as well as the standard and mandatory options. This label is affixed to the inside of each vehicle at the assembly plant.

Transmission ID and VIN Derivative Location 4T65-E


(1)	SRTA Tag Location
(2)	Transmission ID Location
(3)	Hydra-Matic 4T65-E ID Tag
(4)	Transmission
(5)	Julian Date
(6)	Shift Built A = First Shift; B = Second Shift; C = Third Shift
(7)	Update Level
(8)	Model
(9)	Serial Number in Base Code 31
(10)	W = Warren Plant
(11)	Hydra-Matic 4T65-E
(12)	Model
(13)	Model Year 3 = 2003
(14)	Line Built 1 = Line 1; 2 = Line 2; 3 = Line 3; 4 = Line 4
(15)	Serial Number
(16)	Julian Date
(17)	Calendar Year 3 = 2003
(18)	Model
(19)	Model Year 3 = 2003
(20)	Hydra-Matic 4T65-E SRTA Tag
(21)	Control Number
(22)	Transmission

Transmission ID and VIN Derivative Location 5L40-E


(1)	Production or Service New
(2)	Transmission Family
(3)	Model Year
(4)	Alpha Code
(5)	Part Number
(6)	Serial Number
(7)	Empty
(8)	Calibration Code
(9)	I.D. Tag Location
(10)	Remanufactured
(11)	Remanufactured Date - Week
(12)	Remanufactured Date - Year
(13)	R = Remanufactured