Subject: No Reverse, Second Gear or Fourth Gear (Replace Reaction Sun Shell with More Robust Heat Treated Parts)
Model and Year: 1993-2005 Corvette with 4L60/65-E Automatic Transmission (RPOs M30 or M32)
Source: Chevrolet Dealer Sevice Bulletin
Bulletin Number: 00-07-30-022C
This bulletin is being revised to correct two part numbers referenced in the vehicle groups and add text after the Parts Information table. Please discard Corporate Bulletin Number 00-07-30-022B (Section 07 -- Transmission/Transaxle).
Some customers may comment on a no reverse, no second or no fourth gear condition. First and third gears will operate properly.
The reaction sun gear (673) may not hold inside the reaction sun shell (670).
There are FOUR distinct groups of vehicles and repair procedures involved.
• Vehicles built in the 2001 model year and prior that make use of a reaction shaft to shell thrust washer: The sun shell can be identified by four square holes used to retain the thrust washer. Use reaction sun shell P/N 24228345 , reaction carrier to shell thrust washer (699B) P/N 8642202 and reaction sun gear shell thrust washer (674) P/N 8642331 along with the appropriate seals and washers listed below.
• Vehicles built in the 2001 model year and prior that have had previous service to the reaction sun shell: It is possible that some 2001 and prior model year vehicles have had previous service to the reaction sun shell. At the time of service, these vehicles may have been updated with a Reaction Sun Shell Kit (Refer to Service Bulletin 02-07-30-003) without four square holes to retain the thrust washer. If it is found in a 2001 model year and prior vehicles that the reaction sun shell DOES NOT have four square holes to retain the thrust washer, these vehicles must be serviced with P/Ns 24229825 (674), 24217328 and 8642331 along with the appropriate seals and washers listed below.
• Vehicles built in the 2001 model year and later that make use of a reaction shaft to shell thrust bearing: The sun shell can be identified by no holes to retain the thrust washer. Use reaction sun shell, P/N 24229825, reaction carrier shaft to shell thrust bearing (669A), P/N 24217328 and reaction sun gear shell thrust washer (674), P/N 8642331 along with the appropriate seals and washers listed below.
• Vehicles built from November, 2001 through June, 2002: These vehicles should have the reaction carrier shaft replaced when the sun shell is replaced. Use shell kit P/N 24229853, which contains a sun shell (670), a reaction carrier shaft (666), a reaction carrier shaft to shell thrust bearing (669A) and a reaction sun gear shell thrust washer (674). The appropriate seals and washers listed below should also be used.
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: 438
Created On: Wed, Jul 23, 2014 at 8:49 PM
Last Updated On: Wed, Jul 23, 2014 at 8:49 PM
Online URL: https://www.corvetteactioncenter.com/tech/knowledgebase/article/1993-2005-corvette-service-bulletin-no-reverse-second-gear-or-fourth-gear-replace-reaction-sun-shell-with-more-robust-heat-treated-parts-438.html