Transmission Identification Information

WARNING: This page is about a different car, the 2008 GMC Yukon XL, 2008 GMC Yukon, 2008 Chevrolet Tahoe, 2008 Chevrolet Suburban, and 2008 Chevrolet Avalanche. However, it is still accessible from the selected car via links, so may be relevant.

Fig 1: Toledo Build

Courtesy of GENERAL MOTORS CORP.

Callout	Component Name
1	8 = 2008
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

Fig 2: Ramos Arizpe, Mexico Build

Courtesy of GENERAL MOTORS CORP.

Callout	Component Name
1	8 = 2008
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

Fig 3: Bar Code Label Contents

Courtesy of GENERAL MOTORS CORP.

Callout	Component Name
1	8 = 2008
2	Model
3	Hydra-Matic 4L60-E
4	Transmission Asm. as Shipped Number
5	8 = 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, 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
Ramos Arizpe, Mexico	1	A	-	-