Service Bulletin #: 04-07-30-037A
Date: August 19, 2005
Subject: Release of DEXRON VI Automatic Transmission Fluid (ATF)
This bulletin is being revised to announce the use of DEXRON®-VI with the start of the 2006 model year production.
General Motors Powertrain has recently upgraded to DEXRON®-VI ATF with the start of 2006 vehicle production.
Only 2005 and prior models that currently use DEXRON®-III may use DEXRON®-VI as a replacement.
All 2006 and future models that use DEXRON®-VI are to be serviced with DEXRON®-VI fluid only.
DEXRON®-VI is an improvement over DEXRON®-III in the following area:
Extended Factory Fill For Life
160,000 km (100,000 mi) For Cars and Light Duty Trucks*
80,000 km (50,000 mi) (Severe Use) For Cars and Light Duty Trucks*
Clutch Friction Stability
Clutch Durability Due To Fluid
Oil Film Thickness
Foam / Aeration
DEXRON®-VI Auto Trans Fluid (1 Quart Bottle)
DEXRON®-VI Auto Trans Fluid (1 Gallon Bottle)
DEXRON®-VI Auto Trans Fluid (1 Liter Bottle)
DEXRON®-VI Auto Trans Fluid (4 Liter Bottle)
General Motors bulletins are intended for use by professional technicians, not a "do-it-yourselfer". They are written to inform those technicians of conditions that may occur on some vehicles, or to provide information that could assist in the proper service of a vehicle. Properly trained technicians have the equipment, tools, safety instructions and know-how to do a job properly and safely. If a condition is described, do not assume that the bulletin applies to your vehicle, or that your vehicle will have that condition. See a General Motors dealer servicing your brand of General Motors vehicle for information on whether your vehicle may benefit from the information.
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Article ID: 354
Created: July 18, 2014
Last Updated: July 18, 2014
Online URL: https://www.corvetteactioncenter.com/tech/knowledgebase/article/2005-2006-corvette-service-bulletin-release-of-dexron-vi-automatic-transmission-fluid-atf-354.html