Corvette V8-6.2L (2008)
Coolant: Technical Service Bulletins
Cooling System - DEX-COOL(R) Coolant Leak Detection Dye
Bulletin No.: 05-06-02-002B
Date: January 18, 2008
INFORMATION
Subject:
DEX-COOL(R) Coolant - New Leak Detection Dye J 46366 - Replaces J 29545-6
Models:
1996-2008 GM Passenger Cars and Light/Medium Duty Trucks* (including Saturn)
1997-2008 Isuzu T-Series Medium Duty Tilt Cab Models Built in Janesville and Flint
1999-2008 Isuzu N-Series Medium Duty Commercial Models with 5.7L or 6.0L Gas Engine
2003-2008 HUMMER H2
2006-2008 HUMMER H3
2005-2008 Saab 9-7X
*EXCLUDING 2006 and Prior Chevrolet Aveo, Epica, Optra, Vivant and Pontiac Matiz, Wave
Supercede:
This bulletin is being revised to include additional model years. Please discard Corporate Bulletin Number 05-06-02-002A (Section 06 -
Engine/Propulsion System).
Leak detection dye P/N 12378563 (J 29545-6) (in Canada P/N 88900915) may cause DEX-COOL(R) coolant to appear green in a black vessel making it
appear to be conventional (green) coolant. This may cause a technician to add conventional coolant to a low DEX-COOL(R) system thus contaminating
it. The green DEX-COOL(R) appearance is caused by the color of the leak detection dye which alters the color of the DEX-COOL(R) coolant.
A new leak detection dye P/N 89022219 (J 46366) (in Canada P/N 89022220) has been released that does not alter the appearance of the
DEX-COOL(R) coolant. When adding the new leak detection dye the color of the DEX-COOL(R) coolant will not change. For detecting leaks on any
system that uses DEX-COOL(R) leak detection dye P/N 89022219 (in Canada P/N 89022220) should be used. The new leak detection dye can be used
with both conventional and DEX-COOL(R) coolant.
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