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 Bob Your Own Question

Bob, Auto Tech
Category: Chevy
Satisfied Customers: 4087
Experience:  Plus 40 years GM, over 30 certified with Chevrolet, ASE certified Master Tech. (Expired, Retired)
Type Your Chevy Question Here...
Bob is online now
A new question is answered every 9 seconds

2000 Chevrolet Blazer: LT..4.3 liter, automatic..4WD...fuel pump

Resolved Question:

I just purchased a non running 2000 Chevrolet Blazer LT, 4.3 liter, automatic, 4 door, 4WD. The fuel pump was bad. I replaced it today and it fired right up. I pulled the gear lever into reverse and it would not move. I cut the engine off and checked the trans fluid. I added 3.5 qts to get it to full. The transmission shifts smoothly and doesn't slip but it has a bad whine. When in park or neutral there is no whine but when I put it in any gear, reverse or forward the whine begins. The Blazer had been sitting for a couple of months and there is oil / fluid on the transmission. There was not a puddle of fluid where the Blazer had been sitting. The Blazer may have been towed via a chain with another vehicle but I'm not completelty sure about that. The Blazer has 148000 miles on it and the seller told me the transmission had been recently replaced. Any ideas?
Submitted: 7 years ago.
Category: Chevy
Expert:  Bob replied 7 years ago.
Did he say that it was replaced with a new or rebuilt, or did he specify at all what it was replaced with? Any possibility is was another used one from a wrecking yard with no history on it? If it was a new or rebuilt, there should be some sort of a warranty with it. sounds like the first thing you need to do is to get an idea of what is leaking, where and why and then go from there. Some of the things that could cause the unit to make a noise would be a bad pump, a plugged filter or broken filter or filter pickup tube. A bad pump or a trans that has been run with too much or too little fluid in it, can do damage to a pump or converter that would let it make noise. If, as you suspect it was towed with the wheels on the ground, it would matter how far and at what speeds it was towed as that could also do some damage internally on the trans that could cause it to make noise. This trans has a front pump so when it is towed and the drive shaft is turning the rear of the trans is not getting lubricated and it would be pretty easy to tear up output shaft bushings and things like that. You could have fluid line pressure tests done on the trans to eliminate the front pump, but for most of the things that could make noise to be inspected, it will require a tear down of the trans and a physical inspection to see what may or may not be damaged. I think I would begin by removing the trans oil pan and filter and inspecting for signs of burnt clutch material and signs of metal , like brass bushings and things of that nature in the bottom of the pan and the filter. That should give you a good starting point, from there you should get a pretty good idea of what parts to be looking at closely. Any chance that he did the work on the trans himself and may have damaged some parts in the process? Thanks
Customer: replied 7 years ago.
I purchased the Blazer from a recently divorced lady. I have an emeil into her now to see if the transmission was still under warranty. She purchased the Blazer in 2005 with 89000 miles on it and the work has been done since then. She did tell me the cost for the transmission was $1500.00 if that gives you any clue. I haven't cleaned the transmission so I can check to see why the fluid is on the outside of the transmission but it appears the wettest area is teh front of the transmission. I'll drop the pan tomorrow and check for shavings. If there are no shavings would you suggest installing a new filter and fluid or would you just haul it to the shop. Or at this point should I just drive it to the shop an dlet them check the transmission?
Expert:  Bob replied 7 years ago.
I would not do anything until you hear back from her. If it is still under warranty, some of these trans shops do not want anyone taking them apart except themselves. It would be awful if you removed the pan and then found out that was all the reason they needed to void a warranty. So, wait that long at least. Then decide if you want to tear into it or not. If it leaks at the front, I would suspect a bad front trans pump seal. That could be caused by a poor installation or even a problem with the front pump and again, the pump could be making the noise. If you find out there is no kind of warranty coverage, then I would pull the pan and see if I could find anything obvious. If not, then you have to chose between putting it back together to drive to the repair shop or towing it. If it is still running and drivable now, it may pay you, if there is no warranty to take it to a couple of different trans shops and ask for a written estimate. Some of these trans technicians are good enough that they can give you a pretty good idea of what is wrong just from toad testing the truck. They see the same things over and over day after day on the same kinds of transmissions, so they get real good at knowing what to expect, before they even open them up. And then you have a pretty good idea, before you even start on it, of what to expect. The $1500. tells me it was not a new trans. Maybe a rebuilt, but even for that price, it would not normally include installation. A new one installed would be well over 2 grand and a re man would run close to that with labor. If it has to be replaced, call around and get several estimates and compare warranties. Some go as long as 5 yrs and 50 thousand miles. Let me know if there is anything else I can do to help. Thanks
Bob, Auto Tech
Category: Chevy
Satisfied Customers: 4087
Experience: Plus 40 years GM, over 30 certified with Chevrolet, ASE certified Master Tech. (Expired, Retired)
Bob and 7 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... 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.