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 Dan Your Own Question

Dan
Dan, Auto Service Technician
Category: Car
Satisfied Customers: 3490
Experience:  GM ASEP A.A.S. 14 years GM experience. Mark of Excellence and Professional Guild awarded.
4976144
Type Your Car Question Here...
Dan is online now
A new question is answered every 9 seconds

2002 oldsmobile alero: it

Resolved Question:

2002 Oldmobile Alero transmission shifts hard just started doing it .104500miles
Submitted: 6 years ago.
Category: Car
Expert:  Dan replied 6 years ago.

There are several bulletins from GM pertaining to shifting quality and problems. In order to accurately diagnose this problem you should take the car to a reputable transmission shop for a thorough diag. Most will give a free estimate and always ask for an estimate and inquire about parts and labor warranties/guarantees.

#03-07-30-012B: Transaxle or Transmission Slips, Wont Shift, No Reverse, 2nd, 3rd or Overdrive, Erratic Shifts (Replace Driven Sprocket Support Assembly) - (Aug 22, 2005)

Subject:Transaxle or Transmission Slips, Won't Shift, No Reverse, 2nd, 3rd or Overdrive, Erratic Shifts (Replace Driven Sprocket Support Assembly)

Models:2002-2003 Chevrolet Cavalier, Malibu
2002-2003 Oldsmobile Alero
2002-2003 Pontiac Grand Am, Sunfire
with 4T40E or 4T45E Transmission

 


This bulletin is being revised to update model years, clarify part inspection procedure and warranty return request. Please discard Corporate Bulletin Number 03-07-30-012A (Section 07 -- Transmission/Transaxle).


Condition

Some customers may comment that the transaxle/transmission slips, will not shift, will not backup/no reverse, no 2nd, 3rd or overdrive gears and erratic shifts.

Cause

A sleeve WITHIN the driven sprocket assembly (401) may have shifted due to insufficient interference fit, blocking the oil feed hole for the second clutch.

Correction


    Object Number:(NNN) NNN-NNNN Size: MF

  1. Disassemble the transaxle completely and inspect the driven sprocket support assembly oil feed hole.

    Callout "A" shows oil feed holes that are not blocked. Callout "B" shows what the oil feed holes will look like if the sleeve has shifted.

    Important:

    Inspect the 2nd clutch and other components for possible damage. A major overhaul kit is not required for a Driven Sprocket Support Assembly replacement only.
    Driven Sprocket Support Assemblies that the oil feed hole is not blocked / sleeve shifted should not be replaced.

     

  2. If the oil feed hole is blocked, even partially, the Driven Sprocket Support Assembly should be replaced. Refer to Driven Sprocket Support Assembly in Unit Repair in SI.

    Important: Inspections of returned Driven Sprocket Support Assembly at the Warranty Parts Center (WPC) indicated that the Driven Sprocket Support Assemblies are being replaced unnecessarily. Technicians should carefully inspect the sleeve inside the Driven Sprocket Support Assembly for the correct position before replacement.

  3. All Driven Sprocket Support Assemblies replaced will be requested for return through the WPC for inspection of sleeves which have turned / shifted.

Parts Information

Part Number

Description

24207143

Driven Sprocket Support Assembly

 

#02-07-30-013E: Incorrect Transmission Shifts, Poor Engine Performance, Harsh 1-2 Upshifts, Slips 1st and Reverse, Torque Converter Clutch (TCC) Stuck Off/On, DTCs P0757, P0741, P0742, P0730, P0756 - (May 20, 2005)

Subject:Incorrect Transmission Shifts, Poor Engine Performance, Harsh 1-2 Upshifts, Slips 1ST and Reverse, Torque Converter Clutch (TCC) Stuck Off/On, DTCs P0730, P0756, P0757, P0741, P0742 (Clean Transaxle Valve Body and Case Oil Passages of Debris)

Models:2001-2005 GM Passenger Cars with 4T65-E Automatic Transmission
2001-2005 Buick Rendezvous
2005 Buick Terraza
2001-2004 Chevrolet Venture
2005 Chevrolet Uplander
2001-2004 Oldsmobile Silhouette
2001-2005 Pontiac Aztek, Montana
2005 Saturn Relay
with 4T65-E Transmission (RPOs M15, MN3, MN7, M76)

 


This bulletin is being revised to include additional diagnostic information and clarify model usage. Please discard Corporate Bulletin Number 02-07-30-013D (Section 07 -- Transmission/Transaxle).


Condition

Some owners may comment on any one or more of the following conditions:

The SES lamp is illuminated.
The transmission slips.
The transmission does not shift correctly, is very difficult to get the vehicle to start moving or the engine lacks the power to move the vehicle.
Poor engine performance.

Cause

The most likely cause of the various conditions may be chips or debris:

All years--Pressure Reg. Valve (Bore 1) or Torque Signal Valve (Bore 4) stuck.
On 2001-2002 vehicles, a plugged orifice on the case side of the spacer plate.
ON 2003-2005 vehicles, restricted movement of the 2-3 shift valves in the valve body.
On 2003-2005 vehicles, restricted movement of the 3-4 shift valves in the valve body.

Technician Diagnosis and Correction

The technician's road test reveals the vehicle launches in third or fourth gear (high RPM with slow vehicle acceleration).
On 2001-2002 vehicles, a DTC P0756 or P0757 may be stored.
On 2003-2005 vehicles, a DTC P0730, P0741, P0748 or P0757 may be stored.
Refer to the appropriate Service Information (SI) for additional Diagnostic Assistance.
With a Tech 2® connected to the vehicle, road test the vehicle and perform the following steps:

If the above symptoms are present proceed with the following steps.

  1. With the valve body removed and on a workbench, carefully push the valve against spring pressure to check if the valve will snap back to the original position. Or for the valves seated in home position, use a small flat-bladed screwdriver and carefully pry the valve off its seat, quickly remove the screwdriver allowing the valve to return to its seat. If the valve does not snap back unencumbered, then the valve will need to be removed from the valve body.
  2. Once the valve is removed, inspect for any scratching or scoring.
  3. If any scratching or scoring is found, then the fingernail test will need to be performed.

    Important: It has been found that in most cases that the scratches are not severe enough to catch your fingernail.

  4. Using your fingernail, move over any scratches to see if your nail will catch on the scratch or score.
    If your nail catches in the scratches, the valve will need to be replaced.
    If your nail does not catch in the scratches, continue with the next step.

    Important: Clean the valve body with the machined side down so debris may escape.

  5. Clean the valve and bore using brake cleaner.
  6. Blow off with shop air.
  7. To verify free movement of the valve, dip the valve into clean ATF and install the valve back into the appropriate bore. The valve should move freely. If the valve moves freely, in most cases the valve body will function properly when reinstalled.
  8. Reassemble and retest .


Object Number:(NNN) NNN-NNNN Size: MF

(1)Bore 1, Pressure Regulator (Reverse Boost Valve inside bushing)
(2)Bore 2, 1-2 Shift Valve, Solenoid "A"
(4)Bore 4, Torque Signal Valve, Pressure Control Solenoid
(5)Bore 5, Pressure Relief Valve
(6)Bore 6, PWM and TCC Control Valve
(7)Bore 7, TCC Regulator Apply Valve
(11)Bore 11, 3-4 Shift Valve, 4-3 Manual Down Shift Valve
(12)Bore 12, 2-3 Shift Valve, 3-2 Manual Down Shift Valve
(14)Bore 14, Secondary 1-2 Accumulator Valve
(15)Bore 15, 2-3 Accumulator Valve, 3-4 Accumulator Valve
(16)Bore 16, Solenoid "B"

 

Dan, Auto Service Technician
Category: Car
Satisfied Customers: 3490
Experience: GM ASEP A.A.S. 14 years GM experience. Mark of Excellence and Professional Guild awarded.
Dan and 13 other Car Specialists are ready to help you

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
  • Excellent reply, and also very quick. Really sounds like the Expert knows what he is talking about. I will be back to use your service when I need more help with my RV. Dutch USA
 
 
 

Meet The Experts:

 
 
 
  • Chris (aka-Moose)

    Technician

    Satisfied Customers:

    846
    16 years of experience
< 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:

    846
    16 years of experience
  • http://ww2.justanswer.com/uploads/TE/TedG/2012-6-15_14759_avaLarge.64x64.jpg Ted G.'s Avatar

    Ted G.

    ASE Certified Technician

    Satisfied Customers:

    1596
    20 years auto repair experience, ASE Master Tech, Mechanical Failure consultant, Expert Witness
  • http://ww2.justanswer.com/uploads/joecamel90/2008-11-13_03615_head_shot.jpg George H.'s Avatar

    George H.

    ASE Certified Technician

    Satisfied Customers:

    1311
    ASE Master Tech 15+ yrs, AAS Automotive Technology, Factory trained Asian specialist
  • http://ww2.justanswer.com/uploads/AM/amedee/2013-10-24_23656_Amedee1.64x64.jpg Amedee's Avatar

    Amedee

    ASE Master Tech

    Satisfied Customers:

    2367
    ASE Master Tech advanced level specialist
  • http://ww2.justanswer.com/uploads/SU/supermechanic/2013-8-23_03546_500.64x64.jpg Jerry's Avatar

    Jerry

    Master Mechanic

    Satisfied Customers:

    1906
    ASE master, 30+ years. All makes and models. Trouble shooter, shop forman, service manager
  • http://ww2.justanswer.com/uploads/CR/crzydrvr00/2013-11-3_12123_246347.64x64.jpg Richard's Avatar

    Richard

    ASE Certified Technician

    Satisfied Customers:

    942
    12 years Ford Lincoln/Mercury Jaguar dealership as a technician and shop foreman reparing all makes
  • http://ww2.justanswer.com/uploads/ST/Steve7654/2012-6-5_215929_japic800x660.64x64.jpg Steve's Avatar

    Steve

    Auto Service Technician

    Satisfied Customers:

    1980
    25+ yrs experience as a professional working technician; ASE L1 master technician