For 1990-2009 cars

# Warranty System Changes - Medium Duty Trucks

Subject: | Warranty Admin - Warranty System Changes - Medium Duty Trucks

Models: | 2008 and Prior Chevrolet and GMC Medium Duty Trucks

| 2008 and Prior Isuzu Medium Duty Trucks

This bulletin is being revised to include additional labor operation information (in italics). Please discard Corporate Bulletin Number 07-00-89-031 (Section 00 -- General Information).

Effective August 1, 2007 the General Motors Isuzu Commercial Truck (GMICT) joint venture was dissolved. Isuzu has taken back distribution rights for the GM W-Series low cab forward (LCF) vehicles. Due to this change, several warranty related systems have been modified including WINS, GMVIS and Electronic Key Codes (EKC).

#### Warranty Claim Submission

The last credit cycle for processing warranty claims for the W-Series medium duty truck, as well as any Isuzu badged N, F and H-series trucks, through the WINS claim payment system was with cycle #816 dated July 27, 2007. These warranty claims should now be submitted through the Isuzu warranty claim system. This includes claims for open Recalls as well as part warranty claims (current claim types B and N).

Additionally, warranty claims on the 7.8L diesel engine (engine codes 3, B) built by Isuzu are processed by the Isuzu claim system (a list of labor operations NOT to be submitted through WINS is below). This engine is available in both the C and T series medium duty trucks.

In order to allow for possible returned or h-routed claims, no new claims should be submitted into WINS for these vehicles.

#### MIC

MIC/GMPP claims relating to the W-Series medium duty truck and the noted engine labor operations for the 7.8L C & T Series medium duty truck are no longer processed through WINS. The claims relating to these applications will need to be processed manually by MIC’s National Mechanical Service Center (NMSC). Policy information and coverage confirmation can be obtained by calling MIC’s Claims Audio Response Entry System (CARES) at 1-800-642-2273. Once policy/claim confirmation is obtained, transfer to a Customer Service Representative to finalize the claim for submittal and reimbursement.

#### GMVIS

Effective Monday July 30, 2007 all W-Series VINs as well as Isuzu badged medium duty Trucks, including the N-Series, F-Series, and H-Series, were removed from GMVIS. This includes all screens within GMVIS. Vehicle information, including open recalls, applicable warranties, and claim history should be obtained from Isuzu.

#### Labor Time Guide Information

The labor time guides for the W/N series vehicles are provided by Isuzu.

#### Delayed Warranty Start

The Delayed Warranty Start Program has been modified to not accept the submission of a Delayed Warranty Start for W-Series trucks as well as Isuzu badged medium duty trucks, including the N-Series, F-Series, and H-Series.

#### Key Codes

All W-Series Key Codes as well as Isuzu badged Medium Duty Trucks, including the N-Series, F-Series, and H-Series, have been removed from the Electronic Key Code (EKC) System. Key codes for affected vehicles should be obtained from Isuzu.

#### FleetTrac

The GM FleetTrac Program is not affected by these changes.

#### Engine Labor Operations

For the 7.8L Diesel Engine (engine codes 3, B), the following labor operations should be submitted through the Isuzu system:

Labor Operation | Description
--- | ---
J0030 | Engine Oil Leak - Analyze
J0106 | Manifold and/or Gasket, Exhaust - Replace
J0200 | Manifold and/or Gasket, Intake - Replace
J0250 | Manifold, Intake - Replace
J0251 | Gasket, Intake Manifold - Replace
J0308 | Cover and/or Gasket, Rocker - Replace
J0358 | Rocker Arm - One Cyl - Replace
J0508 | Gasket, Cylinder Head - Replace
J0518 | Head, Cylinder - Replace
J0528 | Valve - One Cyl - Recondition or Replace
J0548 | Spring, Cap and/or Seal, Valve - One Cyl - Replace
J0720 | Balancer, Harmonic - Replace
J0750 | Seal, Timing Cover Oil - Replace
J0780 | Cover and/or Gasket, Timing - Replace
J0830 | Sprocket, Crankshaft Timing - Replace
J0840 | Sprocket, Camshaft Timing - Replace
J0846 | Bearings, Camshaft - Replace
J0850 | Camshaft - Replace
J0910 | Breather, Crankcase Ventilation - Replace
J0920 | Oil Level Indicator Replacement
J0930 | Tube, Oil Level Indicator - Replace
J0945 | Filter, Oil Partial - Replace
J0950 | Filter, Oil - Replace
J0960 | Adapter and/or Gasket, Oil Filter - Replace
J1000 | Pan and/or Gasket, Oil - Replace
J1020 | Pump, Engine Oil - Replace
J1120 | Seal, Crankshaft Rear Main - Replace
J1150 | Bearing, Crankshaft Main - One Bearing - Replace
J1180 | Bearing, Connecting Rod - One Bearing - Replace
J1200 | Crankshaft - Replace
J1308 | Piston, Rod and/or Rings - One Cyl - Replace
J1400 | Flywheel (Automatic Transmission/Transaxle) - Replace
J1420 | Flywheel (Manual Transmission/Transaxle) - Replace
J1460 | Housing, Flywheel - Replace
J1600 | Plug, Expansion - Replace
J1640 | Plug, Oil Gallery - Replace
J1800 | Block Engine Fitted - Replace
J1820 | Engine, Partial - Replace
J1880 | Engine Assembly - Replace
J3010 | Cooling System Leak - Analyze
J3120 | Cooler, Engine Oil - Replace
J3122 | Cooler Asm, EGR - Replace
J3420 | Pulley, Coolant Pump - Replace
J3480 | Pump and/or Gasket, Coolant - Replace
J3500 | Thermostat, Outlet and/or Gasket - Replace
J3520 | Housing and/or Gasket, Thermostat - Replace
J4350 | Sensor, Camshaft - Replace
J4355 | Sensor, Crankshaft Position - Replace
J4768 | Plugs, Glow (Diesel) - One or All - Replace
J4792 | Relay - Glow Plug - Replace
J5430 | Pump and/or Gasket, Fuel - Replace
J5670 | Sensor, Air Mass -Replace
J5858 | Turbocharger Assembly - R & R
J5860 | Turbocharger Assembly - Replace
J5865 | Pipe/Hose, Turbocharger Oil - Replace
J5870 | Hose and/or Pipe, Turbocharger Oil Return - Replace
J5926 | Injector, Fuel - One - R & R or Replace
J5927 | Sensor, Fuel Injection Pump Position - Replace
J5929 | Rail, Common Fuel (Diesel) - Replace
J5935 | Line, Fuel Injection High Pressure (Diesel) - One - R & R or Replace
J5950 | Pump, Fuel Injection (Diesel) - R & R
J5955 | Pump, Fuel Injection (Diesel) - Replace
J5962 | Gear and/or Advance Timing Mechanism, Fuel Injection Pump - Replace
J5963 | Coupling Assembly, Fuel Injection Pump Drive (Diesel) - Replace
J5965 | Timing, Fuel Injection Pump (Diesel) - Adjust
J6270 | Valve/Gasket, EGR - Replace
J6360 | Powertrain Control Module Replacement
J6368 | Sensor, Engine Coolant Temperature - Replace
J6370 | Sensor, Manifold Absolute Pres.
J6376 | Sensor, Engine Speed - Replace
J6443 | Exhaust Pressure Differential Sensor Pipe Replacement
J6445 | Exhaust Pressure Differential Sensor Replacement
J6446 | Exhaust Temperature Sensor Replacement - Position 1
J6447 | Exhaust Temperature Sensor Replacement - Position 2
J6460 | Press Sensor, Front, Ex Part F
J7806 | Replace Suction Control Valve
L2295 | Exhaust Particulate Filter Replacement
L2300 | Converter, Oxidation Catalytic - Replace