| Subject: | Release of New Tools for Service: J 37228 - Oil Pan Seal Cutter,
J 41736 - Installer (Rear Output Shaft Seal) and DT 46717 -
Rear Output Shaft Seal Remover | 
| Models: | 1999-2003 Chevrolet W-Series Medium Duty Tilt Cab Models | 
 | 1999-2003 GMC W-Series Medium Duty Tilt Cab Models | 
 | 1999-2003 Isuzu NPR/NQR Commercial Medium Duty Models | 
 | with Aisin Automatic Transmission | 
 
The following special service tools are being released to Medium Duty dealers
to service the oil pan gasket (silicone gasket) and the rear output shaft seal on
the above-listed models.
|     •  | J 37228 - Oil Pan Seal Cutter | 
 
|     •  | J 41736 - Installer (Rear Output Shaft Seal) | 
 
|     •  | *DT 46717 - Rear Output Shaft Seal Remover | 
 
*The DT Function Code represents the Transmission category under the new Global
Tool numbering system. Corporate Bulletin Number 03-00-89-005, dated March
2003 describes the tool numbering system.
Refer to the applicable year W-Series Service Manual for Oil Pan Gasket and
Rear Output Shaft Seal removal and installation procedures.