Lost transmission again

Sdrt101 · November 21, 2005

I have an 2002 Silverado 1500 4x4 off road. First, let me say I don't have a clue when it comes to the auto world.

I lost my transmission in May 2005. I was pulling out of a parking lot when I heard a BAM! It had 69,000 miles on it. The results where, I was able to drive but had no reverse. I felt like I was missing a gear when moving forward from a complete stop. I had no fluid lose. I drove it home 225 miles to a mechanic with no problem (except for higher rpm's). I don't have the info with me, but they rebuilt the transmission.

Yesterday while backing out of a parking space, BAM! It happened again. Same exact problem. It has been 13,500 miles and 6 months since the first time. The mechanic said though it is 5 days and 1500 miles over the warranty he may be able to let it by. IF not, it's another $2003.

Question: Could it be something else putting a strain on the transmission and is causing it to go?

Thanks, for any help. Rich

GM-Tech · November 21, 2005

The sun shell, which is what tears up and causes the problem you had/have has been updated. Who is doing the repair and are they using the latest and greatest parts?

Here's the TSB on this condition...

------------------------------------

No Reverse, Second Gear or Fourth Gear (Replace Reaction Sun Shell with More Robust Heat Treated Parts) #00-07-30-022C - (Dec 10, 2004)

1993-2005 Cars and Light Duty Trucks

2003-2005 HUMMER H2

with 4L60/65-E Automatic Transmission (RPOs M30 or M32)

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).

Condition

Some customers may comment on a no reverse, no second or no fourth gear condition. First and third gears will operate properly.

Cause

The reaction sun gear (673) may not hold inside the reaction sun shell (670).

Correction

Important:

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.

When servicing the transmission as a result of this condition the transmission oil cooler and lines MUST be flushed. Refer to Corporate Bulletin Number 02-07-30-052.

Follow the service procedure below for diagnosis and correction of the no reverse, no second, no forth condition.

Important: If metallic debris is found on the transmission magnet, the transmission must be completely disassembled and cleaned. Metallic debris is defined as broken parts and pieces of internal transmission components. This should not be confused with typical "normal" fine particles found on all transmission magnets. Failure to properly clean the transmission case and internal components may lead to additional repeat repairs.

Remove the transmission oil pan and inspect the magnet in the bottom of the pan for metal debris. Refer to SI Document ID #825141.

Remove the transmission from the vehicle. Refer to the appropriate SI document.

Important:

• Inspect all the transmission components for damage or wear. Replace all damaged or worn components. The parts list below should be sufficient to correct this concern.

• This condition does not normally require replacement of the transmission completely. Components such as clutches, valve body, pump and torque converters will NOT require replacement to correct this condition.

Disassemble the transmission and replace the appropriate parts listed below. Refer to the Unit Repair Manual - Repair Instructions.

(666) reaction carrier shaft

(669) reaction shaft thrust washer / bearing

(670) reaction sun shell

(674) reaction shell thrust washer

Reinstall the transmission in the vehicle. Refer to appropriate service information.

When servicing the transmission as a result of this condition the transmission oil cooler and lines MUST be flushed. Refer to Corporate Bulletin Number 02-07-30-052.

Parts Information

Part Number

Description

Qty

First Design Shell (1993-2001)

24228345

AND

8642202

Shell, Reaction Sun Gear, First Design 1993-2001

(this shell is used with a reaction shaft to shell thrust washer (699B) and has four holes for the thrust washer)

AND

Thrust Washer (669B), Reaction Carrier Shaft to Shell

1

AND

1

Second Design Shell (2001-2004)

24229825

AND

24217328

Shell, Reaction Sun Gear (second design 2001-2004)

(this shell is used with a reaction shaft to shell thrust bearing (669A) and has no holes for the thrust bearing)

AND

Bearing, Reaction Carrier Thrust (669A) (second design 2001-2004)

(used with a reaction shell that has no holes for the thrust bearing)

1

AND

1

Second Design Shell and Reaction Carrier Shaft Kit (used ONLY with Vehicles Built November 2001 - June 2002)

24229853

Shell Kit (to be used only in vehicles built November, 2001 thru June, 2002)

(This kit includes a second design shell, reaction carrier shaft, reaction carrier shaft to shell thrust bearing (669A) and a reaction sun gear shell thrust washer (663))

1

Additional Parts For All Design Levels

8642331

Washer, Reaction Sun Gear Shell Thrust (674)

1

24210605*

Seal, Fluid Pump (O-ring type)

1

12337931

Gasket, Fluid Pump

1

24208664

Seal, Fluid Pump Bolt

7

24208662

Seal, 2-4 Band Servo Cover

1

24221350

Gasket Kit, Control Valve Body Spacer Plate

1

24208576

Filter Kit

1

15642511

Gasket, Transfer Case Adapter (T, L Models)

1

15704050

Gasket, Transfer Case Adapter (K Models)

1

12378470

Fluid, Dexron III

11

*Please see Corporate Bulletin Number 04-07-30-023 prior to ordering seal.

Parts are currently available from GMSPO.

Warranty Information

For vehicles repaired under warranty, use:

Labor Operation

Description

Labor Time

K7285

Reaction Gear Set and/or Reaction Sun Shell - Replace

Use published labor operation time

GM bulletins are intended for use by professional technicians, NOT a "do-it-yourselfer". They are written to inform these 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 your GM dealer for information on whether your vehicle may benefit from the information.

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Sdrt101 · November 22, 2005

Cottman is doing/has done the repair. He said that when it happened six months ago he replaced the broken shell with a harden steel upgrade and was very surprised to see it go. Thanks, Rich