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 Billy Your Own Question

Billy
Billy, Chevrolet tecnician
Category: Chevy
Satisfied Customers: 510
Experience:  Over 25 years experience,GM grand master for 8 years,certified smog and government safety inspector
12771247
Type Your Chevy Question Here...
Billy is online now
A new question is answered every 9 seconds

2003 Tahoe 5.3. Changed trans fluid and filter, kncked off

Resolved Question:

2003 Tahoe 5.3. Changed trans fluid and filter, kncked off some kind of sensor/module in front side of valve body. Black plastic with wires attached, covered copper spool type thing. Snapped it back on. Now truck bogs off the line, check engine light on, won't downshift unless you do it manually. Runs fine at road speed. No previous probs, highly maintained.
Submitted: 5 years ago.
Category: Chevy
Expert:  Billy replied 5 years ago.
Hello escapefromNY and welcome to just answer.

The component that got damaged is a shift solenoid, pressure solenoid or tcc solenoid.
the good news is you can fix it at home but and if you can id for me the one that you broke i should be able to help you with some information.

the front side/engine side of the transmission is on the left side of this image.
Object Number: 181573  Size: SH

  1. Disconnect the internal wiring harness electrical connectors from the following components:
  2. The transmission fluid pressure manual valve position switch (1)
    The 1-2 shift solenoid (2)
    The 2-3 shift solenoid (3)
    The pressure control solenoid (4)
    The TCC PWM solenoid (5)
    The 3-2 shift solenoid (6)

    If you feel my answer was helpful, please click the ACCEPT button. Feedback & Bonuses are always welcome.
    Best regards,
    Billy.

Customer: replied 5 years ago.

Billy,

I believe the right side of the diagram is the engine side. The black plastic cap with the attached wires that came off was either #2 or #3, whichever is towards the passenger side of the vehicle. I snapped it back on. Could I have damaged another, like #5, as that is where the pan was binding.The vehicle will not go into overdrive, and will not kick down using the accellerator. From a dead stop it feels like the emergency brake is on. The OBD reading is "Transmission Module". Thanks a million.

 

Sal

Expert:  Billy replied 5 years ago.
hello Sal

Just to make sure # XXXXX 2 and 3 components on the picture are towards the back of the transmission where the rear drive shaft is.
And #5 and 6 towards the front. facing the engine.This is a fact.
If you would be kind enough to take an other look and tell me which one did you brake.
It is really common for people to brake the shift solenoid in the back due to clearance issues with the cross member.


Best regards,
Billy
Customer: replied 5 years ago.

Billy,

I believe it was the shift solonoid, as I did have trouble with pan clearance, and when manipulating it, I felt the truck "jump" like the emergency brake was released. Sound right to you? Any tips on a part number, or removal/installation would be much appreciated. BTW this is a 2wd if it makes a difference. Thanks.

 

Sal

Expert:  Billy replied 5 years ago.
Hello Sal.

If you feel my answer was helpful, please click the ACCEPT button. Feedback & Bonuses are always welcome.

If the component that you "snapped back" in to place was at the back of the transmission
(#2 or #3 on the image i have sent you earlier) than it is a shift valve or valves that got damaged.
The good news is you can easily replace it. Disconnect the battery
Remove the pan again.

Disconnect the electrical connector from the shift solenoid by slightly pulling/bending on the retainer/lever away from the connector. (try not to break this, it could be brittle from the heat)

Remove the small horseshoe clip that holds the solenoid in place. it is located just front of the solenoid and you will have to use a small hook to pull it down and out.

Remove the solenoid by pulling it out backwards toward to back of the transmission.

Remember the one that you broke will have the "nose" piece stuck inside and may not come out with the solenoid, use a small pick to pull it out or to push it out from the bottom.

You will know it is all clear when you can move/feel the shift valve (366 or 369) with your finger in the hole against its spring tension.

I would suggest to replaced both shift valves at the same time, they are not very expensive, they are the same part number and we don't know which one you damaged.
Possibly both.

Lube the seals/orings on the new solenoids with vaseline or transmission fluid.
push into place and retain with the clip.



Object Number: 405074  Size: SH

  1. Install the following items:
  2. 8.1. The 2-3 shift valve (368)
    8.2. The 2-3 shuttle valve (369)
    8.3. The 2-3 shift solenoid valve (367B)
    8.4. The solenoid retainer (395)
Object Number: 405071  Size: SH

  1. Install the following items:
  2. 9.1. The 1-2 shift valve spring (365)
    9.2. The 1-2 shift valve (366)
    9.3. The 1-2 shift solenoid valve (367A)
    9.4. The solenoid valve retainer (395)
Billy, Chevrolet tecnician
Category: Chevy
Satisfied Customers: 510
Experience: Over 25 years experience,GM grand master for 8 years,certified smog and government safety inspector
Billy and 4 other Chevy 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 was having a terrible problem with the wheel bearings on my 98 Chevy Cavalier and I suspect that using this website saved me plenty of time and money. Todd L Rochester NY
< Last | Next >
  • I was having a terrible problem with the wheel bearings on my 98 Chevy Cavalier and I suspect that using this website saved me plenty of time and money. Todd L Rochester NY
  • 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
  • This expert is wonderful. They truly know what they are talking about, and they actually care about you. They really helped put my nerves at ease. Thank you so much!!!! Alex Los Angeles, CA
  • Thank you for all your help. It is nice to know that this service is here for people like myself, who need answers fast and are not sure who to consult. GP Hesperia, CA
  • I couldn't be more satisfied! This is the site I will always come to when I need a second opinion. Justin Kernersville, NC
  • Just let me say that this encounter has been entirely professional and most helpful. I liked that I could ask additional questions and get answered in a very short turn around. Esther Woodstock, NY
  • Thank you so much for taking your time and knowledge to support my concerns. Not only did you answer my questions, you even took it a step further with replying with more pertinent information I needed to know. Robin Elkton, Maryland
 
 
 

Meet The Experts:

 
 
 
  • Tim's Auto Repair

    mechanic

    Satisfied Customers:

    7641
    Have owned a repair shop for 25 yrs.
< Last | Next >
  • 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:

    7641
    Have owned a repair shop for 25 yrs.
  • http://ww2.justanswer.com/uploads/DT/dt69nova/2012-6-15_234154_pic1.64x64.jpg Dave Nova's Avatar

    Dave Nova

    Chevrolet Technician

    Satisfied Customers:

    6870
    ASE Master Certification. GM World Class Certification
  • http://ww2.justanswer.com/uploads/ggrote1/2009-06-27_031011_me.jpg Gary's Avatar

    Gary

    Chevy Technician

    Satisfied Customers:

    5404
    15 years GM master tech
  • http://ww2.justanswer.com/uploads/testedtuff/2009-09-26_170108_pictures.jpg John's Avatar

    John

    Master A.S.E Automotive technician

    Satisfied Customers:

    4071
    A.S.E MasterTechnician A1-A8 w/L1,38 years experience General Motors Master Technician
  • http://ww2.justanswer.com/uploads/RO/rodcuda/2011-7-25_224114_Donhoff1.64x64.JPG Neal's Avatar

    Neal

    Chevy Mechanic

    Satisfied Customers:

    2306
    Shop Owner and Mechanic on multiple makes.
  • http://ww2.justanswer.com/uploads/goodwrench9124/2008-11-09_220838_dscf0007.jpg goodwrench9124's Avatar

    goodwrench9124

    ASE Certified Technician

    Satisfied Customers:

    2041
    Ase Master Certified, GM Master Certified Tech. Awarded GM Top performer, Hybrid certified
  • http://ww2.justanswer.com/uploads/DR/drivefast1971/2012-1-12_172422_0009051tQKh.64x64.jpg Ron Z.'s Avatar

    Ron Z.

    - Chevy Tech -

    Satisfied Customers:

    1912
    18+yrs experience. State Inspector and Chevy Diagnostics