Question about 2004 Chevrolet Silverado 1500 Crew Cab

2 Answers

Tech recommended a transmission flush?

Have rec'd differing opinions on flush vs. replacing trans fluid.

Posted by on


2 Answers

  • Level 2:

    An expert who has achieved level 2 by getting 100 points


    An expert that got 5 achievements.


    An expert who has written 50 answers of more than 400 characters.


    An expert whose answer got voted for 20 times.

  • Expert
  • 116 Answers

A flush involves putting an input on the transmission and an output.Then while the car is running or not put new fluid in while the old fluid is forced out. Replacing the tranny fluid is just removing the lower pan and gasket and replacing the filter. When this is done you lose only a fraction of the fluid in your transmission (usually just a 1/3 of the fluid the other 2/3 is still the old fluid). the flush also includes replacing the filter and gasket as well. The flush is a more thorough cleaning job of the transmission fluid. Im sure what you are concerned about is that is it really neccessary? the answer is : Most However, If you get a transmission filter change have them show you the pan and magnet that is in the bottom as well as the transmission fluid. Normally there is a light dusting of metallic "sand" around the magnet..(it catches the tiny parts with the magnet). Now if there is metal shavings... thats bad. and the transmission isnt going to be saved even with a flush. Now have them bring some "Fresh new" transmission fluid so you can compare these two. Most transmission fluids are red of various shades, When transmission fluid goes bad it is usually "Burnt" the red then looks more Brown. It also smells very diferent (it will smell burnt) thats when a flush would really do your tranny some good. Transmission Fluid is actually Hydrualic fluid. It doesnt get broken down like engine oil does Instead it works until it is overheated. The filter catches most debris and the magnet catches the iron that the filter misses.If the new tranny fluid is more clearish than red but now its much darker then you can make an asumption that it is burnt. I hope this helps you in your decision making. Knowledge is POWER. dont be afraid of learning about your car. 8-)

Posted on Jun 04, 2009

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points


    An expert that got 10 achievements.


    An expert that got 5 achievements.

    Vice President:

    An expert whose answer got voted for 100 times.

  • Master
  • 667 Answers

I think that fluid replacement, is always better, especially if you have a drain plug on the torque converter, remove the inspection cover and look at the converter, should be a small plug next to one of the torque converter mounting bolts, you may have to rotate the engine to find it, this allows you to remove practically all of the fluid, and you change the filter at the same time, its better for the transmission. Your owners manual will give you a refill capacity. Just like your engine replacing oil with a filter is better.

Posted on Jun 04, 2009


1 Suggested Answer

  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

Hi there,
Save hours of searching online or wasting money on unnecessary repairs by talking to a 6YA Expert who can help you resolve this issue over the phone in a minute or two.

Best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.

Here's a link to this great service

Good luck!

Posted on Jan 02, 2017

Add Your Answer

Uploading: 0%


Complete. Click "Add" to insert your video. Add



Related Questions:

1 Answer

Check transmission fluid

Some of these newer trans have NO dipstick. In the mfg. opinion, if there is not a leak, its full...A trans flush will remove the fluid and replace with new..Never staed if you were exp. any problem...

Nov 19, 2013 | 2005 Chevrolet Cobalt

1 Answer

Fluid leaking into the transmission

Presuming your description is exactly what you wanted to say, look at your radiator. This condition happens when the transmission cooler in the radiator fails and lets coolant be pushed into the trans fluid. Flush everything when you resolve the condition. Have a lube shop do the trans with a t-tech style fluid replacement. Flushing and capturing all old fluids.

Mar 23, 2013 | 2004 Chevrolet Cavalier

1 Answer

How to flush a transmission fluid on a 98 gmc jimmy

I would not recommend flushing trans fluid you risk
getting debris into the solenoids

You will get people telling you other wise

I just remove the pan clean it & refill

If a trans is old it may slip if get all the fluid out
by flushing

You drive a couple weeks then if it is okey you
drop the pan & change it again & that time change
the filter

I did once own a trans repair shop, I'm giving you
my opinion on 48 years personal experience,not
as a former business owner.

You change trans & power steering every 3 years
& never go over 30,000 miles on any vehicle

Use the correct fluids & NO ADDITIVES

Sep 21, 2012 | 1998 GMC Jimmy

1 Answer

2002 Durango transmission sluggish when shifting from 1st to 2nd gear. I was told that the Transmission needs flushed and new Fluid added

Usually if the trans is acting up new fluid isn't going to change a thing, that's usually a ploy to get you to spend some money, just what I have seen.. Q: does the trans act up more or less when hot or cold, if there is a difference with temp then changing the fluid isn't going to help you, but that's my opinion, I been a dodge tech for 17 years but anything is possible with cars......

Jun 14, 2012 | 2002 Dodge Durango

1 Answer

Flushing my F250 super duty automatic transmission

my personal opinion, take it to the shop and let them do it. they have flush machines that run transmission fluid through your trans until it is clean, there is no good way to do it at home. the closest you can get is to remove the trans pan and replace the filter but that doesnt flush your torque converter

Oct 10, 2011 | 1997 Ford F250 SuperCab

1 Answer

I have a 2002 chevy impala ls a dx reading p1811..i had the transmission flushed fluid changed in july this year..started having trouble with taking off from starting point after flush...the car...

Usually valve body is stuck,flush?did they change trans fluid and filter if not recommended you change filter and a bottle trans x it helped a 2001 impala ls I had transmission was good till the day sold it

Jan 14, 2018 | 2001 Chevrolet Impala

1 Answer

I own a 04 Buick Lasabre with 120K miles. Had the trans service a while ago and since thenit at times "slips" and at other times not. Brought it back to the place I had the trans service and they serived...

Unfortunately, servicing a high-mileage transmission can cause issues if it's 'flushed'. It actually flushes out the the gunk (old fluid) that keeps the seals from leaking. If they flushed it vs. just draining and refilling w/new fluid this may be what happened.

I wouldn't repair or get a new transmission unless you intend to keep if for a long time - another 30K miles+. I'd suggest a used transmission, which should be much cheaper. If you can find a shop to install it, they can also warranty the install and the transmission - most all used parts stores (junkyards/wrecking yards/etc.) warranty their parts, too.


Jul 05, 2010 | 2004 Buick LeSabre

2 Answers

Changing transmission fluid - waste of money or not?

90k kms is about 60k miles, so yes I would recommend a trans fluid flush and refill, not just a trans fluid and filter change. when you drop a trans pan to change the filter you are only replacing at most, one third of the trans fluid. the other two thirds stays in the torque convertor. chrysler is also now using ATF+4 synthetic trans fluid(recommended).

Oct 14, 2009 | 2005 Dodge Caravan

2 Answers

My transmission fluid is muddyish and slightly burnt smelling. Should I flush?

it would be a good idea to flush the radiator and refill with new fluid.

Jul 08, 2009 | 1992 Toyota 4Runner

2 Answers

I have a 1995 Suburban do you think it is necessary to flush the transmission? I have heard several different opinions from flushing every couple of years to not doing it at all because the tranny can be...

1st let me make sure we agree on what a transmission flush is: the quick oil change places around here offer a transmission flush, when I asked what exactly was done (the price seemed far to cheap to include fluid, filter, and labor), I was informed that a tube is placed in the dip stick, and as much fluid as possible is drawn out, and new fluid added. In my opinion, this is a total waste, I advise that you don't do it. The reason is this: changing your trans fluid AND filter is great preventative maintenance for your transmission. By drawing out the fluid through the dip stick tube, you are still left with a dirty filter. Many vehicles have a magnet located in the pan, and it collects fine metal particles that occur from normal wear and tear. When the pan is removed to access the filter, this magnet can be cleaned, and any abnormal wear (pieces of metal, not fine stuff) can be observed when this is done. Not so with the 'flush'. So yes, service the tranny, but do it the right way.

May 01, 2009 | 1995 Chevrolet Suburban

Not finding what you are looking for?
Cars & Trucks Logo

821 people viewed this question

Ask a Question

Usually answered in minutes!

Top Chevrolet Experts


Level 3 Expert

80339 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

22326 Answers

Ronny Bennett Sr.
Ronny Bennett Sr.

Level 3 Expert

6927 Answers

Are you a Chevrolet Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides