For 1990-2009 cars

# Information on Dealer and Customer Support Organization and Systems - General Motors Isuzu Commercial Truck (GMICT) Dissolved

Subject: | Information on Dealer and Customer Support Organization and Systems -- General Motors Isuzu Commercial Truck (GMICT) Dissolved

Models: | 2008 and Prior ALL Chevrolet, GMC and Isuzu Medium Duty Vehicles

Effective August 1, 2007, the current General Motors Isuzu Commercial Truck (GMICT) limited liability company will be dissolved, and GM anticipates that it will enter into a new arrangement with Isuzu effective August 1, 2007. These changes will not impact the GM Dealer Sales and Service Agreement between GM and it's medium duty dealers, and vehicles will continue to be badged Chevrolet and GMC, however GM Dealers will purchase GM badged "W"-Series vehicles directly from Isuzu.

Once finalized, there will be significant changes to the GM Medium and Isuzu Commercial Vehicle Dealer and customer support organizations, including the systems used.

This communication is being sent to help you understand these pending changes and assist in making the necessary preparations. The matrix tables below list key functions and organizational responsibilities after August 1, 2007. You will be advised of any additional changes through service bulletins as necessary.

### Key Functions

#### GMC and Chevrolet

• | GM W-Series -- Supported by Isuzu personnel, systems and processes.

• | Diesel Engines (4HK1 and 6HK1) -- Supported by Isuzu personnel, systems and processes.

• | GM C&T Series -- Supported by GM personnel, systems and processes (with the exception of diesel engines listed above).

• | Warranty claim processing, Dealer/Customer/Parts and Technical assistance is based on the vehicle model and brand (see Support Matrix tables below).

#### Isuzu (U.S. Only)

• | Isuzu N-Series -- Supported by Isuzu personnel, systems and processes.

• | Isuzu F/H Series -- Supported by Isuzu personnel, systems and processes.

• | Diesel Engines (4HK1 and 6HK1) -- Supported by Isuzu personnel, systems and processes.

• | GM C&T Series -- Supported by GM personnel, systems and processes (with the exception of diesel engines listed above).

• | Warranty claim processing, Dealer/Customer/Parts and Technical assistance is based on the vehicle model (see Support Matrix tables below).

### Service Information Support Phone Numbers

General Motors Support
GM Dealer Support - Medium Duty Business Center (U.S.) WINS Warranty Claims Assistance Centre (Canada) | 1-800-MEDIUM-D 1-888-222-5546
GM Customer Support - GM Customer Assistance (U.S.) GM Canada Customer Communication Centre | 800-862-4389 1-800-263-3777
GM Dealer Technical Assistance - GM Technical Assistance Center (TAC) (U.S.) GM Canada Technical Assistance Centre (English TAC) GM Canada Technical Assistance Centre (French TAC) | 877-446-8227 1-800-263-7740 1-800-263-7960

Isuzu Motors Support
Immediate Response Center (IRC) | 877-ISUZUCV (877-478-9828)
Sales & Incentive Questions | Option 1
Warranty Claims & Service Administration | Option 2
Vehicle Technical Assistance | Option 3
Distribution and Shipping | Option 4
Fleet Assistance | Option 5
N & W Series Parts Technical Support | Option 6
AIPDN Diesel Engine & General Parts Support | Option 7

Isuzu Customer Relations -- 866-441-9638 (U.S. Only)

Isuzu Roadside Assistance -- 866-441-9659 (U.S. Only)

### Support Matrix - Responsibility After August 1, 2007

USE THE FOLLOWING CHARTS IF YOU ARE A GM DEALER OR SERVICING GM BRAND VEHICLES:

#### Support Organization

GM | Weight Class/Vehicle Mfg | Dealer Contact for Assistance (except 4HK1/6HK1 diesel engine) | Customer Relations and Roadside Assistance Support | Dealer Technical Support | Dealer Parts Support (except 4HK1/6HK1 diesel engine) | Isuzu Diesel (4HK1/6HK1 Engine Support)
--- | --- | --- | --- | --- | --- | ---
W/N Series
GMC/Chevy W3500 | 3/Isuzu | Isuzu | Isuzu | Isuzu | Isuzu (AIPDN) | Isuzu
GMC/Chevy W4500 | 4/Isuzu | Isuzu | Isuzu | Isuzu | Isuzu (AIPDN) | Isuzu
GMC/Chevy W5500 | 5/Isuzu | Isuzu | Isuzu | Isuzu | Isuzu (AIPDN) | Isuzu
GMC/Chevy W5500 HD | 5/Isuzu | Isuzu | Isuzu | Isuzu | Isuzu (AIPDN) | Isuzu
T Series
GMC/Chevy T6500 | 6/GM | GM* | GM* | GM TAC* | GMSPO* | Isuzu
GMC/Chevy T7500 | 7/GM | GM* | GM* | GM TAC* | GMSPO* | Isuzu
GMC/Chevy T8500 w/single axle | 8/GM | GM* | GM* | GM TAC* | GMSPO* | Isuzu
GMC/Chevy T8500 w/tandem axle | 8/GM | GM* | GM* | GM TAC* | GMSPO* | Isuzu
C Series
GMC/Chevy C4500 | 4/GM | GM* | GM* | GM TAC* | GMSPO* | N/A
GMC/Chevy C5500 | 5/GM | GM* | GM* | GM TAC* | GMSPO* | N/A
GMC/Chevy C6500 | 6/GM | GM* | GM* | GM TAC* | GMSPO* | Isuzu
GMC/Chevy C7500 | 7/GM | GM* | GM* | GM TAC* | GMSPO* | Isuzu
GMC/Chevy | 8/GM | GM* | GM* | GM TAC* | GMSPO* | Isuzu

#### Claim Responsibility & Processing

GM | Weight Class/Vehicle Mfg | Vehicle Chassis Warranty Claims are Processed Through... | Isuzu Diesel (4HK1/6HK1) Engine Warranty Claims are Processed Through... [must be an "Isuzu Engine Certified Service Center"] | GM Gas (6.0L) Engine Warranty Claims are Processed Through... | GM Gas (8.1L) Engine Warranty Claims are Processed Through... | Automatic Transmission (4L80E Hydra-Matic) Warranty Claims are Processed Through...
--- | --- | --- | --- | --- | --- | ---
W/N Series
GMC/Chevy W3500 | 3/Isuzu | Isuzu | Isuzu | Isuzu | N/A | Isuzu
GMC/Chevy W4500 | 4/Isuzu | Isuzu | Isuzu | Isuzu | N/A | Isuzu
GMC/Chevy W5500 | 5/Isuzu | Isuzu | Isuzu | Isuzu | N/A | Isuzu
GMC/Chevy W5500 HD | 5/Isuzu | Isuzu | Isuzu | Isuzu | N/A | Isuzu
T Series
GMC/Chevy T6500 | 6/GM | GM* | Isuzu | N/A | N/A | N/A
GMC/Chevy T7500 | 7/GM | GM* | Isuzu | N/A | N/A | N/A
GMC/Chevy T8500 w/single axle | 8/GM | GM* | Isuzu | N/A | N/A | N/A
GMC/Chevy T8500 w/tandem axle | 8/GM | GM* | Isuzu | N/A | N/A | N/A
C Series
GMC/Chevy C4500 | 4/GM | GM* | N/A | N/A | GM* | N/A
GMC/Chevy C5500 | 5/GM | GM* | N/A | N/A | GM* | N/A
GMC/Chevy C6500 | 6/GM | GM* | Isuzu | N/A | GM* | N/A
GMC/Chevy C7500 | 7/GM | GM* | Isuzu | N/A | GM* | N/A
GMC/Chevy | 8/GM | GM* | Isuzu | N/A | GM* | N/A

#### Campaigns

GM | Weight Class/Vehicle Mfg | Dealer Campaign Notification & Payment Responsibility | Owner Campaign Notification Responsibility
--- | --- | --- | ---
W/N Series
GMC/Chevy W3500 | 3/Isuzu | Isuzu | Isuzu
GMC/Chevy W4500 | 4/Isuzu | Isuzu | Isuzu
GMC/Chevy W5500 | 5/Isuzu | Isuzu | Isuzu
GMC/Chevy W5500 HD | 5/Isuzu | Isuzu | Isuzu
T Series
GMC/Chevy T6500 | 6/GM | GM | GM*
GMC/Chevy T7500 | 7/GM | GM | GM*
GMC/Chevy T8500 w/single axle | 8/GM | GM | GM*
GMC/Chevy T8500 w/tandem axle | 8/GM | GM | GM*
C Series
GMC/Chevy C4500 | 4/GM | GM* | GM*
GMC/Chevy C5500 | 5/GM | GM* | GM*
GMC/Chevy C6500 | 6/GM | GM* | GM*
GMC/Chevy C7500 | 7/GM | GM* | GM*
GMC/Chevy | 8/GM | GM* | GM*

USE THE FOLLOWING CHARTS IF YOU ARE AN ISUZU DEALER OR SERVICING ISUZU BRAND VEHICLES:

#### Support Organization

Isuzu | Weight Class/Vehicle Mfg | Dealer Contact for Assistance (except 4HK1/6HK1 diesel engine) | Customer Relations and Roadside Assistance Support | Dealer Technical Support | Dealer Parts Support (except 4HK1/6HK1 diesel engine) | Isuzu Diesel (4HK1/6HK1 Engine Support)
--- | --- | --- | --- | --- | --- | ---
W/N Series
NPR | 3/Isuzu | Isuzu | Isuzu | Isuzu | Isuzu (AIPDN) | Isuzu
NPR HD | 4/Isuzu | Isuzu | Isuzu | Isuzu | Isuzu (AIPDN) | Isuzu
NQR | 5/Isuzu | Isuzu | Isuzu | Isuzu | Isuzu (AIPDN) | Isuzu
NRR | 5/Isuzu | Isuzu | Isuzu | Isuzu | Isuzu (AIPDN) | Isuzu
F Series
FTR | 6/GM | Isuzu** | Isuzu** | Isuzu** | Isuzu (AIPDN)** | Isuzu
FVR | 7/GM | Isuzu** | Isuzu** | Isuzu** | Isuzu (AIPDN)** | Isuzu
FXR w/single axle | 8/GM | Isuzu** | Isuzu** | Isuzu** | Isuzu (AIPDN)** | Isuzu
FXR w/tandem axle | 8/GM | Isuzu** | Isuzu** | Isuzu** | Isuzu (AIPDN)** | Isuzu
H Series
HTR | 6/GM | Isuzu** | Isuzu** | Isuzu** | Isuzu (AIPDN)** | Isuzu
HVR | 7/GM | Isuzu** | Isuzu** | Isuzu** | Isuzu (AIPDN)** | Isuzu
HXR | 8/GM | Isuzu** | Isuzu** | Isuzu** | Isuzu (AIPDN)** | Isuzu

#### Claim Responsibility & Processing

Isuzu | Weight Class/Vehicle Mfg | Vehicle Chassis Warranty Claims are Processed Through... | Isuzu Diesel (4HK1/6HK1) Engine Warranty Claims are Processed Through... [must be an "Isuzu Engine Certified Service Center"] | GM Gas (6.0L) Engine Warranty Claims are Processed Through... | GM Gas (8.1L) Engine Warranty Claims are Processed Through... | Automatic Transmission (4L80E Hydra-Matic) Warranty Claims are Processed Through...
--- | --- | --- | --- | --- | --- | ---
W/N Series
NPR | 3/Isuzu | Isuzu | Isuzu | Isuzu | N/A | Isuzu
NPR HD | 4/Isuzu | Isuzu | Isuzu | Isuzu | N/A | Isuzu
NQR | 5/Isuzu | Isuzu | Isuzu | Isuzu | N/A | Isuzu
NRR | 5/Isuzu | Isuzu | Isuzu | Isuzu | N/A | Isuzu
F Series
FTR | 6/GM | Isuzu** | Isuzu | N/A | N/A | N/A
FVR | 7/GM | Isuzu** | Isuzu | N/A | N/A | N/A
FXR w/single axle | 8/GM | Isuzu** | Isuzu | N/A | N/A | N/A
FXR w/tandem axle | 8/GM | Isuzu** | Isuzu | N/A | N/A | N/A
H Series
HTR | 6/GM | Isuzu** | Isuzu | N/A | N/A | N/A
HVR | 7/GM | Isuzu** | Isuzu | N/A | N/A | N/A
HXR | 8/GM | Isuzu** | Isuzu | N/A | N/A | N/A

#### Campaigns

Isuzu | Weight Class/Vehicle Mfg | Dealer Campaign Notification & Payment Responsibility | Owner Campaign Notification Responsibility
--- | --- | --- | ---
W/N Series
NPR | 3/Isuzu | Isuzu | Isuzu
NPR HD | 4/Isuzu | Isuzu | Isuzu
NQR | 5/Isuzu | Isuzu | Isuzu
NRR | 5/Isuzu | Isuzu | Isuzu
F Series
FTR | 6/GM | Isuzu** | Isuzu**
FVR | 7/GM | Isuzu** | Isuzu**
FXR w/single axle | 8/GM | Isuzu** | Isuzu**
FXR w/tandem axle | 8/GM | Isuzu** | Isuzu**
H Series
HTR | 6/GM | Isuzu** | Isuzu**
HVR | 7/GM | Isuzu** | Isuzu**
HXR | 8/GM | Isuzu** | Isuzu**

* = Unique processes which apply to GM vehicles/dealers

** = Unique processes which apply to Isuzu vehicles/dealers

N/A = Not available

### Medium Duty Dealer Warranty Service Matrix

#### Body & Chassis Only

Dealer Designation | C | T | F | N | W
--- | --- | --- | --- | --- | ---
GMC/Chevrolet, Medium Duty | X | X |  |  |
GMC/Chevrolet Medium Duty with IECSC* | X | X |  |  |
GMC/Chevrolet Medium Duty with W addendum | X | X |  | Breakdown Only | X
GMC/Chevrolet Medium Duty with W addendum and IECSC* | X | X |  | Breakdown Only | X
Isuzu Commercial Vehicle |  |  | X | X | Breakdown Only
Isuzu Commercial Vehicle with IECSC* |  |  | X | X | Breakdown Only
*IECSC = Isuzu Engine Certified Service Center NOTES: (1) Allison Transmissions require Allison Service Agreement (2) CAT Engines require CAT TEPS Agreement (3) Standard transmissions, Aisin transmissions, 8.1L gas engines and 6.6L diesel engines follow chassis designations.

"X" indicates services authorized to perform

#### Isuzu Engine Only

Dealer Designation | 6HK1 Diesel | 4HK1 Diesel & 6.0L Gas
--- | --- | ---
| C | T | F | N | W
GMC/Chevrolet, Medium Duty (U.S.) GMC/Chevrolet, Medium Duty (Canada Only) | X | X |  |  |
GMC/Chevrolet Medium Duty with IECSC* | X | X | X | X | X
GMC/Chevrolet Medium Duty with W addendum | X | X |  | Breakdown Only | X
GMC/Chevrolet Medium Duty with W addendum and IECSC* | X | X | X | X | X
Isuzu Commercial Vehicle |  |  | X | X | Breakdown Only
Isuzu Commercial Vehicle with IECSC* | X | X | X | X | X
*IECSC = Isuzu Engine Certified Service Center NOTES: (1) Allison Transmissions require Allison Service Agreement (2) CAT Engines require CAT TEPS Agreement (3) Standard transmissions, Aisin transmissions, 8.1L gas engines and 6.6L diesel engines follow chassis designations.

"X" indicates services authorized to perform