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 BOBBYSS Your Own Question

BOBBYSS, Master Technician
Category: Chevy
Satisfied Customers: 16772
Type Your Chevy Question Here...
BOBBYSS is online now
A new question is answered every 9 seconds

Chevrolet 2008 Chevy Cobalt automatic transmission problem;

Customer Question

2008 Chevy Cobalt automatic transmission problem; RPM's flutter in high gear starting at 30mph to 45mph. Dealer had had time duplicating problem until I yanked service advisor into car and duplicated problem within 2 minutes. Dealer replaced the torque converter but it did not fix problem. This all started at 43,000 miles. Now car has 63,000 miles and getting worse. Extended warranty has just expired too. I believe it to be solenoid valve. I had a 2004 Yukon Denali with same problem and dealer replaced solenoid valve and it immediately fixed problem (dropped oil pan and replaced solenoid). Service advisor claims the Cobalt has way different transmission and that would not be the fix. When tranny is fluttering, your body gets thrown around inside car. Like someone is taking foot on and off the accelerator 6 or 7 times within 2 seconds. Humanly impossible to do. Seems to be electrical in nature or some type of solenoid valve. Help!!
Submitted: 4 years ago.
Category: Chevy
Expert:  BOBBYSS replied 4 years ago.
Hello Customer, is the check engine light coming on in the vehicle?
Customer: replied 4 years ago.
no check engine light. dealer cannot see any error codes either.
Expert:  BOBBYSS replied 4 years ago.
Okay. The most common issue to cause this problem on your vehicle is the valve body on the transmission. It is very common for it to become clogged or warped and cause the transmission to shift this way. More than likely it will either need to be removed and cleaned out or replaced. Since you were taking it to the dealer for the problems while you were under warranty they should still accept the warranty since they never actually fixed it for 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... seen a spike since October in legal questions from readers about layoffs, unemployment and severance.
Web sites like
...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
< Previous | 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:

  • GM Tech (Cam)

    GM Tech (Cam)

    Chevy Technician

    Satisfied Customers:

    GM Grand Master Technician 2007. 14 years experience.
< Last | Next >
  • GM Tech (Cam)'s Avatar

    GM Tech (Cam)

    Chevy Technician

    Satisfied Customers:

    GM Grand Master Technician 2007. 14 years experience.
  • Tim's Auto Repair's Avatar

    Tim's Auto Repair


    Satisfied Customers:

    Have owned a repair shop for 25 yrs.
  • Gary's Avatar


    Chevy Technician

    Satisfied Customers:

    15 years GM master tech
  • Dave Nova's Avatar

    Dave Nova

    Chevrolet Technician

    Satisfied Customers:

    ASE Master Certification. GM World Class Certification
  • John's Avatar


    Master A.S.E Automotive technician

    Satisfied Customers:

    A.S.E MasterTechnician A1-A8 w/L1,38 years experience General Motors Master Technician
  • Don 'Mo Lurch''s Avatar

    Don 'Mo Lurch'

    Auto Mech / Electronics

    Satisfied Customers:

    Chevrolet Cert., Heavy Line Mech, Race Shop Owner, Mobile Electronics.
  • Neal's Avatar


    Chevy Mechanic

    Satisfied Customers:

    Shop Owner and Mechanic on multiple makes.