Question about 1998 GMC Jimmy

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Can we flush the transmission fluid in her GMC 1998 Jimmy?

Check engine light on. Auto zone tested, said change trans fluid.
Daughter and I are wanting to flush/ drain the old fluid out and put new in,,,Is it really hard?, Do we need a shop? and is it expensive?

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You dont have to flush the fluid because transmission fluid has detergents in it that will clean the transmission.You need to go ahead and by a transmission filter, its only abou 20 dollars and it will come with the transmission pan gasket. All you need is the filter and fluid and a catch pan and you can do it in your front yard if you want to. I hope that helps you out!

Posted on Jul 17, 2009

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5 Answers

Auto fluid was brown so when I drained it, only 2 litres came out, so put back 2 litres of fresh which came up to the hot mark on the dipstick. Fluid now still brown ( but not as dark as before.


Michael, If your vehicle is a normal automatic transmission it will have a torque converter. If you really want to attempt a complete flush, I will post links on how it is done, you will still have to change the filter to ensure a thorough job. Check the attached links,instruction and guides, Good luck
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May 18, 2016 | Cars & Trucks

1 Answer

Will not shift out first gear


I assume this is an automatic?
If the shift linkage is not damaged (jammed or disconnected the usual answer is the governer valve in the transmission is sticking.
The fix for this normally involves pulling the trans out stripping it apart cleaning the governer valve new seals gaskets and reassembling.
(translated lots of money) try using a auto trans flush to clean all the gunk out of the transmission. Run the trans through all the gears with the trans flush and try driving it (only short distance test drive as its not proper trans fluid) see if you can get it out of first gear (flatten the gas pedal and let the engine go to max revs on short bursts) once it shifts once or twice go back and remove the trans flush fluid and replace with correct specification auto trans fluid I would also change the transmission filter at this point if it was mine .

Feb 10, 2016 | 2000 Ford Escort

1 Answer

P0741 torque converter BUT check engine light doesn't show anymore


First the transmission is about $3,600 twice what you were told

You take it to a trans shop they should use the proper test equipment & road test, to check out the codes & maybe just
a converter clutch solenoid is needed

If the trans fluid has never been changed every 3 years since
2003, then the trans may be done & have to be replaced

If the fluid is dark,smells or is burn't,don't change it, as that is not
a fix for anything & it will slip & be unusable.

If a trans shop doesn't take you on the road test or into the shop
to explain things or pitches a rebuilt trans, then try another shop
& go thru the routine a second time

In the end the trans may have to come out, but not from the codes
I see, until properly diagnosed (I used to own a trans shop hope
that helps)

Just keep in mind a fluid change (never a flush) won't remove
debris from the valve body or any solenoids

Changing a failed or clogged solenoid & changing somewhat
clean fluid maybe all you need --cross your fingers-- not many trans
live long - good luck

Mar 10, 2014 | 2003 Hyundai Santa Fe

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

GMC Sonoma automatic Transmission Problems, engine rev's in D & 3rd


First check trans. fluid. It should be full, & clean. Clean means light red color fluid (like red cool-aid) if it looks like darker red, or brown fluid, like motor oil, that is way too dirty & should be flushed. May need to change the filter too. dirty trans. fluid is your big enemy. could also be an electrical problem in the trans like a shift solenoid or something like that, but check for clean fluid first.

Aug 10, 2012 | 2003 GMC Sonoma Extended Cab

3 Answers

Put a new radiator on 3 days ago...transmission fluid is in the anti-freeze..


It sounds like you got a bad radiator! Or your transmission got hot enough before you replaced the radiator to rupture the cooling jacket.

A Jimmy runs pretty hot, so I always recommend the separate transmission cooler to help with the engine and transmission cooling problems of the Jimmy.

Aug 14, 2011 | 2000 GMC Jimmy

3 Answers

How much transmission fluid is in a 1999 jeep wrangler. want drain and flush trans completely and replace all fluid


Unless you have a flushing machine you will not be able to empty the torque converter.If you have a 3 speed auto you are looking at 9 quarts total.If you have a 4 speed transmission you are looking at 10 half total.Be sure you check the fluid in neutral and not park.

Feb 14, 2011 | 1999 Jeep Wrangler

1 Answer

The transmission drain plug isn't obvious to me. Can you describe the size and location of it? (I actually see two small plugs in that area. Which one?)


Your vehicle may not have a trans drain plug. The pan drops if you have no plug.
Correct service is much better perfromed by a lube shop, with a t-tech style trans flush machine. Essentially, they pump in new fluid, (while engine running) and pump out the old, until the fluid is clean.
The reason that this is better is that you flush the torque converter, all passageways, oil cooling lines and the oil cooler.
Check your manual, the filter in the trans may also need changing. WAAAAAAY less expensive to service the trans, when compared to a fluid restriction which burns up the clutches.

Feb 03, 2011 | 2008 Ford Taurus X

3 Answers

Need to service trans on my 05 lancer can you flush trans


On automatic transmission that has over 100,000 miles,you should not flash it. DO NOT got to a shop that use re-circulate machine to flush out the transmission.

Base on the 2005 production year,you should have only 60,000 on the transmission.

The correct method is to purchase the transmission filter,pan gasket kit + transmission fluid and a trans line cleaning fluid.

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Get the complete kit from your auto parts supply store and do the drain,cooler flush and filter change.

Recycle your old transmission fluid at your part store or recycling center.

Jun 29, 2010 | 2004 Mitsubishi Lancer

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