How JustAnswer Works:

  • Ask an Expert
    Experts are full of valuable knowledge and are ready to help with any question. Credentials confirmed by a Fortune 500 verification firm.
  • Get a Professional Answer
    Via email, text message, or notification as you wait on our site.
    Ask follow up questions if you need to.
  • 100% Satisfaction Guarantee
    Rate the answer you receive.

Ask rodcuda Your Own Question

rodcuda
rodcuda, Auto Mechanic
Category: Transmissions
Satisfied Customers: 8333
Experience:  Shop owner with experience in overhauls and diagnosis.
17294534
Type Your Transmissions Question Here...
rodcuda is online now
A new question is answered every 9 seconds

Transmissions 6T75: HAVE A 07 SATURN OUTLOOK 6T75 TRANS. CODEP0776

Customer Question

HAVE A 07 SATURN OUTLOOK 6T75 TRANS. CODEP0776 SYMPTOM 00--FLUID FULL & NOT BURNT. WILL NOT BACK UP --STILL GO FORWARD BUT ACTING UP.
Submitted: 2 years ago.
Category: Transmissions
Expert:  rodcuda replied 2 years ago.

Hello I'm Neal and I am here to help resolve your issue. If I cannot help I will opt out and refer your question to another expert.

-

That is a known issue and this condition is caused by a broken clutch wave plate allowing the piston to over-stroke, causing it not to apply pressure. This normally will not occur before approximately 20,000 mi. This can also lead to the speed sensors not working and can damage other transmission parts..

-

Repair requires the transmission be rebuilt unfortunately. I can provide the entire tsb if you like.

Customer: replied 2 years ago.
yes I would like the TSB please.
Customer: replied 2 years ago.
please send TSB
Expert:  rodcuda replied 2 years ago.

Here you go.

-

TECHNICAL

Bulletin No.: 09-07-30-012B

Date: March 08, 2011

Subject: No Reverse, 3rd or 5th, Check Engine Light Illuminated, DTC P0776 (Replace 3-5 Reverse Clutch Plate (Waved))

Models:
2008-2009 Buick Enclave
2008-2009 Chevrolet Equinox, Malibu
2009 Chevrolet Traverse
2007-2009 GMC Acadia
2007-2009 Pontiac G6
2008-2009 Pontiac Torrent
2007-2009 Saturn AURA, OUTLOOK
2008-2009 Saturn VUE
All Equipped with 6T70/75 6-Speed Automatic Transmission (RPOs MH2, MH4, MH6 or MY9)

Supercede:
This bulletin is being revised to update the information. Please discard Corporate Bulletin Number 09-07-30-012A (Section 07 - Transmission/Transaxle).

Condition

Some customers may comment about an SES light and/or no reverse and may also comment on a slip / flare or harsh shifts in drive range 3rd and/or 5th gear. Upon investigation, the technician may find DTC P0776 (Clutch Pressure Control (PC) Solenoid 2 - Stuck Off) set. Any one of the following codes may set independent of each other as a result of this wave plate breaking: P0777, P2723, P0717, P0716, P2715, P2714.

Cause

This condition may be caused by a broken 35R clutch wave plate allowing the apply piston to over-stroke, causing the piston to leak and causing loss of apply. This normally will not occur before approximately 32,000 km (20,000 mi). Debris generated by the condition can affect the operation of the speed sensors and other clutches.

Correction

Important
It is recommended that a new plate be installed any time the transmission is disassembled for any reason.

A new 3-5 reverse clutch plate (WAVED), P/N 24254103 (423), has been released to address this condition. Refer to SI for the appropriate repair instructions.

A broken 35R wave plate can generate varying amounts of debris inside the transmission. In most cases this debris has not passed through the pump fluid filter (201) so has not caused damage to the pump, valve bodies or torque converter. This debris can be cleaned and the transmission successfully repaired.

In summary the following steps should be taken:

1. After removing the transmission from the vehicle, remove the case cover assembly (35). Inspect the case cover for damage. This part is serviced and can be replaced if it is damaged.
2. Remove the 35R / 456 clutch housing assembly (422) and inspect it for a broken 35R wave plate (423).
3. Inspect the case (21) for damage. If the case is damaged, the transmission must be replaced as the case is not serviced. If the case is not damaged, proceed with the tear down and inspection. Any possible damage is typically confined to the case lugs. If the clutch plates can move freely to engage or release the clutch packs, the transmission should not be replaced. If the snap ring grooves are not damaged and will securely retain the snap rings, the transmission should not be replaced. Peening or wear of the edge of the case lugs that engage the clutch plates is normal and acceptable and not cause for transmission replacement.
4. Remove the control valve body cover (1), control solenoid (w/body and TCM) valve assembly (15) and filter plate assembly (16).
5. Inspect the filter plate assembly (16) for the presence of metallic debris on the screens.

- If there is no debris on the screens, the pump fluid filter was effective and there is no debris in the pump or torque converter. Therefore the pump, torque converter and valve body do not need to be replaced. The transmission should be repaired.
- If there is debris on the screens, the pump and torque converter should be inspected further. Refer to SI procedure Transmission Fluid Pump Cleaning and Inspection for the pump. Refer to SI procedure Torque converter Diagnosis for the section Torque Converter Replacement Guide.
- Fine metal particles that you cannot feel (traces of metal flakes/gray color to the fluid) are not reasons to replace the torque converter.
- Metal chips/debris that you can feel or that are found in the converter, or when flushing the cooler and cooler lines, indicate the torque converter should be replaced.

6. The valve body must be disassembled and cleaned, refer to the latest version of Corporate Bulletin Number 08-07-30-005 for direction.
7. The transmission case halves must be separated, internal components removed and all parts thoroughly cleaned. Be sure to clean the speed sensors, both input (ISS) and output (OSS). These sensors are magnetic and will attach and hold any ferrous material. Failure to clean these sensors may result in DTCs. A new pump fluid filter must be installed.

Customer: replied 2 years ago.
I seem to be having A problem getting the TSB from you?
Expert:  rodcuda replied 2 years ago.
Can you not see it in the post just before you last one?

JustAnswer in the News:

 
 
 
Ask-a-doc Web sites: If you've got a quick question, you can try to get an answer from sites that say they have various specialists on hand to give quick answers... Justanswer.com.
JustAnswer.com...has seen a spike since October in legal questions from readers about layoffs, unemployment and severance.
Web sites like justanswer.com/legal
...leave nothing to chance.
Traffic on JustAnswer rose 14 percent...and had nearly 400,000 page views in 30 days...inquiries related to stress, high blood pressure, drinking and heart pain jumped 33 percent.
Tory Johnson, GMA Workplace Contributor, discusses work-from-home jobs, such as JustAnswer in which verified Experts answer people’s questions.
I will tell you that...the things you have to go through to be an Expert are quite rigorous.
 
 
 

What Customers are Saying:

 
 
 
  • I would (and have) recommend your site to others I was quite satisfied with the quality of the information received, the professional with whom I interacted, and the quick response time. Thanks, and be sure that I'll be back whenever I need a question answered in a hurry. Stephanie P Elm City, NC
< Last | Next >
  • I would (and have) recommend your site to others I was quite satisfied with the quality of the information received, the professional with whom I interacted, and the quick response time. Thanks, and be sure that I'll be back whenever I need a question answered in a hurry. Stephanie P Elm City, NC
  • used your service this weekend with "Trecers" help. thank you ,thank you, thank you. replaced an A/C fan motor. Local Auto Zone had part. $15.00 "tracer" fee and $40.00 for parts, I saved several hundreds of dollers at a shop. i will recommend you and use you in the future. David L. Richmond, TX
  • 9 dollars, 2 hours of my time, and I drove away. Your diagnosis was right on the mark. Thank you so much. Phil Marysville, CA
  • Lurch. Thank you very much. I had real doubts about this website but your promptness of response, quick followup and to the point answer with picture was incredible. Charles Walnut Creek, CA
  • As a single woman, I really appreciate an excellent and affordable opinion.
    Thank you Geordie, I will not hesitate to contact justanswer in the future!
    Sue Charleston, WV
  • Another great insight to what may be the problem. I will have my mechanic take a look at it tomorrow. Thanks again, Frank...you do indeed know your stuff. Jim Castleberry, FL
  • Wonderful service, prompt, efficient, and accurate. Couldn't have asked for more. I cannot thank you enough for your help. Mary C. Freshfield, Liverpool, UK
 
 
 

Meet The Experts:

 
 
 
  • Chris (aka- Moose)

    Technician

    Satisfied Customers:

    1005
    16 yrs. experience with auto, manual, & CVT drivelines
< Last | Next >
  • http://ww2.justanswer.com/uploads/MU/muddyford/2012-6-13_1204_1.64x64.png Chris (aka- Moose)'s Avatar

    Chris (aka- Moose)

    Technician

    Satisfied Customers:

    1005
    16 yrs. experience with auto, manual, & CVT drivelines
  • http://ww2.justanswer.com/uploads/ggrote1/2009-06-27_031011_me.jpg Gary's Avatar

    Gary

    ASE Certified Technician

    Satisfied Customers:

    209
    25 years GM master tech
  • http://ww2.justanswer.com/uploads/FO/fordguy4u/2011-12-17_222940_HPIM1257.64x64.JPG Ron's Avatar

    Ron

    ASE Certified Technician

    Satisfied Customers:

    208
    35 years working on Ford, Lincolns and Mercs.
  • http://ww2.justanswer.com/uploads/TI/tim37857/2011-10-28_23053_S6301814.64x64.JPG Tim's Auto Repair's Avatar

    Tim's Auto Repair

    Mechanic

    Satisfied Customers:

    191
    I have been rebuilding automatic transmissions for 25 years
  • http://ww2.justanswer.com/uploads/MI/mikeamechanic/2013-4-2_175558_photo.64x64.JPG Mike Kelly's Avatar

    Mike Kelly

    ASE Certified Technician

    Satisfied Customers:

    145
    17 years experience as an auto mechanic, foreign and domestic. 5 years running my own repair business.
  • http://ww2.justanswer.com/uploads/PE/peterpete190/2012-2-24_1274_20120215135406.64x64.jpg Pete's Avatar

    Pete

    Automotive Mechanic

    Satisfied Customers:

    137
    GM and Mercedes vehicle technician.
  • http://ww2.justanswer.com/uploads/JM/jmcdo28/2012-2-23_01655_resized.64x64.jpg John Mc's Avatar

    John Mc

    Trans specialist

    Satisfied Customers:

    93
    Transmission dealer tech for over 19 years