Special Tools Ordering Information
The special service tools shown in this service manual that have product numbers beginning with J, SA or BT are available for worldwide distribution from
OE Tool and Equipment Group
Kent-Moore
28635 Mound Road
Warren
MI, U.S.A
48092-3499
Phone: 1-800-345-2233 or 586-574-2332
Monday through Friday
8:00 am-7:00 pm Eastern Standard Time
Fax: 1-800-578-7375 or 586-578-7321
The TECH 2 scan tool and accessories can be purchased through
Dealer Equipment and Services
5775 Enterprise Dr.
Warren
MI, U.S.A
48092-3463
Phone: 1-800-GM-TOOLS or 586-574-2332
Monday through Friday
8:00 am-6:00 pm EST
Fax: 1-586-578-7205
Engine ID and VIN Derivative Location
The eighth character in the Vehicle Identification Number (VIN) identifies the engine. Adhesive-backed labels attached to the engine, laser etching or stampings on the engine block indicate the engine unit number/date code. All engines are stamped with a VIN derivative.
Scheme 5
| Callout | Component Name |
|---|---|
| 1 | Primary Engine Identification Number Location |
| 2 | Secondary Engine Identification Number Location |
Scheme 6
| Callout | Component Name |
|---|---|
| 1 | Primary Engine Identification Location |
| 2 | Secondary Engine Identification Location |
Scheme 7
| Callout | Component Name |
|---|---|
| 1 | Engine Identification Number Location |
Scheme 8
| Callout | Component Name |
|---|---|
| 1 | Engine Identification Number Location |
Scheme 9
| Callout | Component Name |
|---|---|
| 1 | 2-Door Pickup Fleetside/Wideside |
| 2 | 2-Door Pickup Sportside |
| 3 | 2-Door Chassis Cab |
| 4 | 4-Door Extended Cab Fleetside/Wideside |
| 5 | 4-Door Extended Cab Sportside |
| 6 | 4-Door Extended Chassis Cab |
| 7 | 4-Door Crew Cab Fleetside/Wideside |
| 8 | 4-Door Crew Cab Chassis Cab |
| Engine/RPO | Transmission | |
|---|---|---|
| Automatic/RPO | Manual/RPO | |
| C15703 (2-Door Short Box) | ||
| 4.3L V6 Gasoline (LU3) | 4L60-E 4-Speed (M30) | Getrag 5-Speed (MG5) Tremac 5-Speed (TZO) |
| 4.8L V8 Gasoline (LR4) | 4L60-E 4-Speed (M30) | Getrag 5-Speed (MG5) Tremac 5-Speed (TZO) |
| 5.3L V8 Gasoline (L59) | 4L60-E 4-Speed (M30) | N/A |
| 5.3L V8 Gasoline (LM7) | 4L60-E 4-Speed (M30) | N/A |
| C15743 (4-Door Crew Cab Short Box) | ||
| 6.0L V8 Gasoline (LQ4) | 4L80-E 4-Speed (MT1) | N/A |
| C15753 (4-Door Extended Cab Short Box) | ||
| 4.3L V6 Gasoline (LU3) | 4L60-E 4-Speed (M30) | Getrag 5-Speed (MG5) |
| 4.8L V8 Gasoline (LR4) | 4L60-E 4-Speed (M30) | Getrag 5-Speed (MG5) |
| 5.3L V8 Gasoline (L59) | 4L60-E 4-Speed (M30) | N/A |
| 5.3L V8 Gasoline (LM7) | 4L60-E 4-Speed (M30) | N/A |
| C15753 PHT (4-Door Extended Cab Short Box) | ||
| 5.3L V8 Gasoline (LM7) | 4L60-E Hybrid (M33) | N/A |
| C15903 (2-Door Long Box) | ||
| 4.3L V6 Gasoline (LU3) | 4L60-E 4-Speed (M30) | Getrag 5-Speed (MG5) |
| 4.8L V8 Gasoline (LR4) | 4L60-E 4-Speed (M30) | Getrag 5-Speed (MG5) |
| 5.3L V8 Gasoline (L59) | 4L60-E 4-Speed (M30) | N/A |
| 5.3L V8 Gasoline (LM7) | 4L60-E 4-Speed (M30) | N/A |
| C15953 (4-Door Extended Cab Long Box) | ||
| 4.8L V8 Gasoline (LR4) | 4L60-E 4-Speed (M30) | Getrag 5-Speed (MG5) |
| 5.3L V8 Gasoline (L59) | 4L60-E 4-Speed (M30) | N/A |
| 5.3L V8 Gasoline (LM7) | 4L60-E 4-Speed (M30) | N/A |
| C25743 (4-Door Crew Cab Short Box) | ||
| 6.0L V8 Gasoline (LQ4) | 4L80-E 4-Speed (MT1) | 5-Speed NVG (MW3) |
| 6.6L V8 Diesel (LLY) | Allison LCT 1000 5-Speed (M74) Allison LCT 1000 6-Speed (MW7) | 6-Speed (ML6) |
| 6.6L V8 Diesel (LB7) | Allison LCT 1000 5-Speed (M74) | 6-Speed (ML6) |
| 8.1L Gasoline (L18) | Allison LCT 1000 5-Speed (M74) Allison LCT 1000 6-Speed (MW7) | 6-Speed (ML6) |
| C25753 (4-Door Extended Cab Short Box) | ||
| 6.0L V8 Gasoline (LQ4) | 4L80E 4-Speed (MT1) | 5-Speed NVG (MW3) |
| 6.6L V8 Diesel (LLY) | Allison LCT 1000 5-Speed (M74) Allison LCT 1000 6-Speed (MW7) | 6-Speed (ML6) |
| 6.6L V8 Diesel (LB7) | Allison LCT 1000 5-Speed (M74) | 6-Speed (ML6) |
| 8.1L V8 Gasoline (L18) | Allison LCT 1000 5-Speed (M74) Allison LCT 1000 6-Speed (MW7) | 6-Speed (ML6) |
| C25903 (2-Door Short Box) | ||
| 6.0L V8 Gas (LQ4) | 4L80-E 4-Speed (MT1) | 5-Speed NVG (MW3) |
| 6.6L V8 Diesel (LB7) | Allison LCT 1000 5-Speed (M74) | 6-Speed (ML6) |
| 8.1L V8 Gasoline (L18) | Allison LCT 1000 5-Speed (M74) Allison LCT 1000 6-Speed (MW7) | 6-Speed (ML6) |
| C25943 (4-Door Crew Cab Long Box) | ||
| 6.0L V8 Gasoline (LQ4) | 4L80-E 4-Speed (MT1) | 5-Speed NVG (MW3) |
| 6.6L V8 Diesel (LB7) | Allison LCT 1000 5-Speed (M74) | 6-Speed (ML6) |
| 8.1L V8 Gasoline (L18) | Allison LCT 1000 5-Speed (M74) Allison LCT 1000 6-Speed (MW7) | 6-Speed (ML6) |
| C25953 (4-Door Extended Cab Long Box) | ||
| 6.0L V8 Gasoline (LQ4) | 4L80-E 4-Speed (MT1) | 5-Speed NVG (MW3) |
| 6.6L V8 Diesel (LB7) | Allison LCT 1000 5-Speed (M74) | 6-Speed (ML6) |
| 8.1L V8 Gasoline (L18) | Allison LCT 1000 5-Speed (M74) Allison LCT 1000 6-Speed (MW7) | 6-Speed (ML6) |
| C35943 (4-Door Crew Cab Long Box) | ||
| 6.0L V8 Gasoline (LQ4) | 4L80-E 4-Speed (MT1) | 5-Speed NVG (MW3) |
| 6.6L V8 Diesel (LB7) | Allison LCT 1000 5-Speed (M74) | 6-Speed (ML6) |
| 8.1L V8 Gasoline (L18) | Allison LCT 1000 5-Speed (M74) Allison LCT 1000 6-Speed (MW7) | 6-Speed (ML6) |
| C35953 (4-Door Extended Cab Long Box) | ||
| 6.0L V8 Gasoline (LQ4) | 4L80-E 4-Speed (MT1) | 5-Speed NVG (MW3) |
| 6.6L V8 Diesel (LB7) | Allison LCT 1000 5-Speed (M74) | 6-Speed (ML6) |
| 8.1L V8 Gasoline (L18) | Allison LCT 1000 5-Speed (M74) Allison LCT 1000 6-Speed (MW7) | 6-Speed (ML6) |
| C36003 (2-Door Regular Chassis Cab) | ||
| 6.0L V8 Gasoline (LQ4) | N/A | Tremec 5-Speed (M96) |
| 6.0L V8 Gasoline (LQ4) | 4L80-E 4-Speed (MT1) | 5-Speed NVG (MW3) |
| 6.6L V8 Diesel (LB7) | Allison LCT 1000 5-Speed (M74) | 6-Speed (ML6) |
| 8.1L V8 Gasoline (L18) | Allison LCT 1000 5-Speed (M74) Allison LCT 1000 6-Speed (MW7) | 6-Speed (ML6) |
| C36053 (4-Door Extended Chassis Cab) | ||
| 6.0L V8 Gasoline (LQ4) | 4L80-E 4-Speed (MT1) | 5-Speed NVG (MW3) |
| 6.6L V8 Diesel (LB7) | Allison LCT 1000 5-Speed (M74) | 6-Speed (ML6) |
| 8.1L V8 Gasoline (L18) | Allison LCT 1000 5-Speed (M74) Allison LCT 1000 6-Speed (MW7) | 6-Speed (ML6) |
| C36403 (2-Door Reg Chassis Cab) | ||
| 6.0L V8 Gasoline (LQ4) | 4L80-E 4-Speed (MT1) | 5-Speed NVG (MW3) |
| 6.6L V8 Diesel (LB7) | Allison LCT 1000 5-Speed (M74) | 6-Speed (ML6) |
| 8.1L V8 Gasoline (L18) | Allison LCT 1000 5-Speed (M74) Allison LCT 1000 6-Speed (MW7) | 6-Speed (ML6) |
Engine and Transmission Applications - 2-Wheel Drive
| Engine/RPO | Transmission | |
|---|---|---|
| Automatic/RPO | Manual/RPO | |
| K15703 (2-Door Regular Cab Short Box) | ||
| 4.3L V6 Gasoline (LU3) | 4L60-E 4-Speed (M30) | Getrag 5-Speed (MG5) |
| 4.8L V8 Gasoline (LR4) | 4L60-E 4-Speed (M30) | Getrag 5-Speed (MG5) |
| 5.3L V8 Gasoline (L59) | 4L60-E 4-Speed (M30) | N/A |
| 5.3L V8 Gasoline (LM7) | 4L60-E 4-Speed (M30) | N/A |
| K15743 (4-Door Crew Cab Short Box) | ||
| 6.0L V8 Gasoline (LQ4) | 4L80-E 4-Speed (MT1) | N/A |
| K15753 (4-Door Extended Cab Short Box) | ||
| 4.8L V8 Gasoline (LR4) | 4L60-E 4-Speed (M30) | Getrag 5-Speed (MG5) |
| 5.3L V8 Aluminum Gasoline (L33) | 4L60-E 4-Speed (M30) | N/A |
| 5.3L V8 Gasoline (L59) | 4L60-E 4-Speed (M30) | N/A |
| 5.3L V8 Gasoline (LM7) | 4L60-E 4-Speed (M30) | N/A |
| 6.0L V8 Gasoline (LQ4) | 4L60-E HD 4-Speed (M32) | N/A |
| 6.0L V8 Gasoline (LQ9) | 4L60-E HD 4-Speed (M32) | N/A |
| K15753 PHT (4-Door Extended Cab Hybrid) | ||
| 5.3L V8 Gasoline (LM7) | 4L60-E Hybrid (M33) | N/A |
| K15903 (2-Door Regular Cab Long Box) | ||
| 4.3L V6 Gasoline (LU3) | 4L60-E 4-Speed (M30) | Getrag 5-Speed (MG5) |
| 4.8L V8 Gasoline (LR4) | 4L60-E 4-Speed (M30) | Getrag 5-Speed (MG5) |
| 5.3L V8 Gasoline (L59) | 4L60-E 4-Speed (M30) | N/A |
| 5.3L V8 Gasoline (LM7) | 4L60-E 4-Speed (M30) | N/A |
| K15953 (4-Door Extended Cab Long Box) | ||
| 4.8L V8 Gasoline (LR4) | 4L60-E 4-Speed (M30) | Getrag 5 Speed (MG5) |
| 5.3L V8 Gasoline (L59) | 4L60-E 4-Speed (M30) | N/A |
| 5.3L V8 Gasoline (LM7) | 4L60-E 4-Speed (M30) | N/A |
| K25743 (4-Door Crew Cab Short Box) | ||
| 6.0L V8 Gasoline (LQ4) | 4L80-E 4-Speed (MT1) | 5 Speed NVG (MW3) |
| 6.6L V8 Diesel (LLY) | Allison LCT 1000 5-Speed (M74) Allison LCT 1000 6-Speed (MW7) | 6-Speed (ML6) |
| 6.6L V8 Diesel (LB7) | Allison LCT 1000 5-Speed (M74) | 6-Speed (ML6) |
| 8.1L V8 Gasoline (L18) | Allison LCT 1000 5-Speed (M74) Allison LCT 1000 6-Speed (MW7) | 6-Speed (ML6) |
| K25753 (4-Door Extended Cab Short Box) | ||
| 6.0L V8 Gasoline (LQ4) | 4L80-E 4-Speed (MT1) | 5-Speed NVG (MW3) |
| 6.6L V8 Diesel (LLY) | Allison LCT 1000 5-Speed (M74) Allison LCT 1000 6-Speed (MW7) | 6-Speed (ML6) |
| 6.6L V8 Diesel (LB7) | Allison LCT 1000 5-Speed (M74) | 6-Speed (ML6) |
| 8.1L V8 Gasoline (L18) | Allison LCT !000 5-Speed (M74) Allison LCT 1000 6-Speed (MW7) | 6-Speed (ML6) |
| K25903 (2-Door Regular Cab Long Box) | ||
| 6.0L V8 Gasoline (LQ4) | 4L80-E 4-Speed (MT1) | 5-Speed NVG (MW3) |
| 6.6L V8 Diesel (LLY) | Allison LCT 1000 5-Speed (M74) Allison LCT 1000 6-Speed (MW7) | 6-Speed (ML6) |
| 6.6L V8 Diesel (LB7) | Allison LCT 1000 5-Speed (M74) | 6-Speed (ML6) |
| 8.1L V8 Gasoline (L18) | Allison LCT 1000 5-Speed (M74) Allison LCT 1000 6-Speed (MW7) | 6-Speed (ML6) |
| K25943 (4-Door Crew Cab Long Box) | ||
| 6.0L V8 Gasoline (LQ4) | 4L80-E 4-Speed (MT1) | 5-Speed NVG (MW3) |
| 6.6L V8 Diesel (LLY) | Allison LCT 1000 5-Speed (M74) Allison LCT 1000 6-Speed (MW7) | 6-Speed (ML6) |
| 6.6L V8 Diesel (LB7) | Allison LCT 1000 5-Speed (M74) | 6-Speed (ML6) |
| 8.1L V8 Gasoline (L18) | Allison LCT 1000 5-Speed (M74) Allison LCT 1000 6-Speed (MW7) | 6-Speed (ML6) |
| K25953 (4-Door Extended Cab Long Box) | ||
| 6.0L V8 Gasoline (LQ4) | 4L80-E 4-Speed (MT1) | 5-Speed NVG (MW3) |
| 6.6L V8 Diesel (LLY) | Allison LCT 1000 5-Speed (M74) Allison LCT 1000 6-Speed (MW7) | 6-Speed (ML6) |
| 6.6L V8 Diesel (LB7) | Allison LCT 1000 5-Speed (M74) | 6-Speed (ML6) |
| 8.1L V8 Gasoline (L18) | Allison LCT 1000 5-Speed (M74) Allison LCT 1000 6-Speed (MW7) | 6-Speed (ML6) |
| K35903 (2-Door Regular Cab Long Box) | ||
| 6.0L V8 Gasoline (LQ4) | 4L80-E 4-Speed (MT1) | 5-Speed NVG (MW3) |
| 6.6L V8 Diesel (LLY) | Allison LCT 1000 5-Speed (M74) Allison LCT 1000 6-Speed (MW7) | 6-Speed (ML6) |
| 6.6L V8 Diesel (LB7) | Allison LCT 1000 5-Speed (M74) | 6-Speed (ML6) |
| 8.1L V8 Gasoline (L18) | Allison LCT 1000 5-Speed (M74) Allison LCT 1000 6-Speed (MW7) | 6-Speed (ML6) |
| K35943 (4-Door Crew Cab Long Box) | ||
| 6.0L V8 Gasoline (LQ4) | 4L80-E 4-Speed (MT1) | 5-Speed NVG (MW3) |
| 6.6L V8 Diesel (LLY) | Allison LCT 1000 5-Speed (M74) Allison LCT 1000 6-Speed (MW7) | 6-Speed (ML6) |
| 6.6L V8 Diesel (LB7) | Allison LCT 1000 5-Speed (M74) | 6-Speed (ML6) |
| 8.1L V8 Gasoline (L18) | Allison LCT 1000 5-Speed (M74) Allison LCT 1000 6-Speed (MW7) | 6-Speed (ML6) |
| K35953 ( 4-Door Extended Cab Long Box) | ||
| 6.0L V8 Gasoline (LQ4) | 4L80-E 4-Speed (MT1) | 5-Speed NVG (MW3) |
| 6.6L V8 Diesel (LLY) | Allison LCT 1000 5-Speed (M74) Allison LCT 1000 6-Speed (MW7) | 6-Speed (ML6) |
| 6.6L V8 Diesel (LB7) | Allison LCT 1000 5-Speed (M74) | 6-Speed (ML6) |
| 8.1L V8 Gasoline (L18) | Allison LCT 1000 5-Speed (M74) Allison LCT 1000 6-Speed (MW7) | 6-Speed (ML6) |
| K36003 (2-Door Chassis Cab) | ||
| 6.0L V8 Gasoline (LQ4) | 4L80-E 4-Speed (MT1) | 5-Speed NVG (MW3) |
| 6.6L V8 Diesel (LLY) | Allison LCT 1000 5-Speed (M74) Allison LCT 1000 6-Speed (MW7) | 6-Speed (ML6) |
| 6.6L Diesel (LB7) | Allison LCT 1000 5-Speed (M74) | 6-Speed (ML6) |
| 8.1L V8 Gasoline (L18) | Allison LCT 1000 5-Speed (M74) Allison LCT 1000 6-Speed (MW7) | 6-Speed (ML6) |
| K36053 (4-Door Extended Chassis Cab) | ||
| 6.0L V8 Gasoline (LQ4) | 4L80-E 4-Speed (MT1) | 5-Speed NVG (MW3) |
| 6.6L V8 Diesel (LLY) | Allison LCT 1000 5-Speed (M74) Allison LCT 1000 6-Speed (MW7) | 6-Speed (ML6) |
| 6.6L V8 Diesel (LB7) | Allison LCT 1000 5-Speed (M74) | 6-Speed (ML6) |
| 8.1L V8 Gasoline (L18) | Allison LCT 1000 5-Speed (M74) Allison LCT 1000 6-Speed (MW7) | 6-Speed (ML6) |
| K36403 (2-Door Chassis Cab) | ||
| 6.0L V8 Gasoline (LQ4) | 4L80-E 4-Speed (MT1) | 5-Speed NVG (MW3) |
| 6.6L V8 Diesel (LLY) | Allison LCT 1000 5-Speed (M74) Allison LCT 1000 6-Speed (MW7) | 6-Speed (ML6) |
| 6.6L V8 Diesel (LB7) | Allison LCT 1000 5-Speed (M74) | 6-Speed (ML6) |
| 8.1L V8 Gasoline (L18) | Allison LCT 1000 5-Speed (M74) Allison LCT 1000 6-Speed (MW7) | 6-Speed (ML6) |
Engine and Transmission Applications - 4-Wheel Drive
Transmission ID and VIN Derivative Location
A Transmission ID Tag and a VIN Derivative stamp is located on the transmission case.
Scheme 10
The 4L60-E transmission ID and VIN derivative location (1).
Scheme 11
Transmission ID and VIN derivative locations (1, 2). The right hand stamping is shown, left hand is opposite. Pin or hand stamp location (3) for the transmission ID or VIN derivative.
Scheme 12
Vehicle identification number location PIN stamp only (1). Vehicle identification number location optional PIN or Hand Stamp (2). Vehicle identification number location optional Pin stamp only (3).
Scheme 13
The transmission vehicle identification number location PIN or hand stamp (1, 3). Vehicle identification number location PIN or hand stamp (2).
Scheme 14
Vehicle identification number location for PIN stamp (3). Optional hand stamp locations (1, 2, 4)
Scheme 15
Engine identification tag location (1).
Scheme 16
An identification tag is attached to the rear half of the transfer case. The tag provides the following information
- Model number (1) First Digit-1 =Single Speed, 2=Two Speed Second Digit-3 =T-Truck, L-Van, 4 or 6 = GMT 800 Third Digit-1 = Manual, 3 = Electric Shift, 6 = Automatic, 9 = All Wheel Drive
- Assembly number (2)
- Serial number (Date & Shift Code) (3)
- Low range reduction ratio (4)
The information on this tag is necessary for servicing the transfer case. If the tag is removed or becomes dislodged during service operations, keep the identification tag with the unit.
Scheme 17
Front axle identification information is stamped on the top of the differential carrier assembly. The information includes the following
- Broadcast code (1)
- Supplier code (2)
- Date built (3)
- Shift built (4) (Optional for 8.25" and 9.25" axles)
- Hour built (5)
In order to verify reports made on the differential case assembly, include full code letters and build date numbers.
Scheme 18
Rear axle identification information is stamped on the right side axle tube near the differential housing. The information includes the following
- Broadcast code (1)
- Build Source (2)
- Build date (3) (Julian date)
- Shift built (4)
In order to verify reports made on the rear axle assembly, include full code letters and build date numbers.
Scheme 19
Federal law requires that General Motors label certain body parts on this vehicle with the vehicle identification number (VIN). The purpose of the law is to reduce the number of motor vehicle thefts by helping in the tracing and the recovery of parts from stolen vehicles.
The labels are permanently affixed to an interior surface of the part. The label on a replacement part contains the letter R, the manufacturer's logo, and the DOT symbol.
Scheme 20
| Callout | Component Name |
|---|---|
| 1 | Vehicle Identification Number |
| 2 | Wheel Base |
| 3 | Part Number Location |
| 4 | Model Designation |
| 5 | Order Number |
| 6 | Exterior Color |
| 7 | Paint Technology |
The service parts identification label is placed on the vehicle in order to help the service and parts personnel identify the vehicle's original parts and the vehicle's original options.
Special Tools
Special Tools Tool Illustration Tool Number/ Description J 41340 Ignition Lock Holding Fixture
