Question about 1993 Saturn SC2

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97 Saturn Sl1, rebuilt the transmission, put in a new Valve Body, and still having reverse problems. Its Delayed. What do i do now?

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Try removing end cover and checking nuts on input and output shafts the turque should be 110 ft lbs

Posted on Feb 22, 2009


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My 1995 sl1 saturn only has reverse when it is cold. When i start the car in the morning, it has reverse once. It does not have reverse again until it cools down like after a work day or in the morning...

Common problem with these transmissions.Wear in the boost valve assembly in the valve body causes low pressure and no or partial reverse issues.low fluid can also cause this issue.Make sure you check the fluid with the engine idling in park.The valve bodies are repairable with some expensive tools and knowledge.New valve bodies were availiable from saturn but not sure if gm still sevices the parts.Call Transtar @ 800 633 3340 ext 237 Tammy Mcheal and she can sell you a rebuilt valve body and I can walk you through instalation.

Apr 27, 2011 | 1995 Saturn Sl

1 Answer

Put car in reverse and does not go into gear right away and then when it does it gos into gear real hard (BooM)

your trans needs a new throttle body, they can be found (rebuilt) on the internet for less than $150 and can be replaced without removing the transmission-it is a very common issue with Saturns. try not to let it 'slam' into reverse, if you do, you'll end up having to repair the output shaft (best case) plus do the valve body, and worst case, you will have to have the trans rebuilt/replaced.

Jan 28, 2011 | 1996 Saturn SL

3 Answers

When put my automatic 2001 Saturn SL1 into reverse it makes a Loud clunk noise before it reverses also it clunks before accelerating into the next gears..? why?

2001 Saturn SL1. Transmission (automatic) shifts hard when putting it in gear and every gear there after. The only codes I get is PO442 and PO410. Any help would be greatly appreciated.

Jul 08, 2010 | 1999 Saturn SL

1 Answer


You have a problem with your valve body. It needs to be replaced with a rebuilt one. The booster valve in your valve body is worn away and won't create sufficient pressure (reverse requires the most pressure). It only does it when hot because the fluid is thinned out and can leak past the metal to metal seal in the booster sleeve.

Do not try to get reverse to engage if it does not, you will damage other systems of the transmission.

Feb 02, 2010 | Saturn L-Series Cars & Trucks

1 Answer


Transmission is not junk. You need to replace the valve body with a rebuilt one. The cause of reverse not working is because the booster valve cannot create sufficient pressure to get into reverse (reverse requires the most pressure). The booster valve is worn down and the valve body needs to be replaced, rebuilt is the way to go. This is from not changing the fluid and filter every 20,000 -- 30,000 miles to keep gunk from building up and wearing down the valve.

The transmission is fine, don't let anyone talk you into putting another one in, especially for thousands of dollars, NOT THE PROBLEM.

Feb 01, 2010 | 1993 Saturn SC1

3 Answers

My 2001 Saturn SL1 no longer goes in reverse, it only revs but does not catch. It is also starting to slip between first and second gear. About how much will a new transmission cost?

Sounds like this is an automatic s-series. Sounds like you previously had a reverse slam in the car. Meaning when you put it in reverse it would delay then slam. As this gets worse it begins to untorque what is known as the input shaft nut. Eventually this nut will get so loose that you lose reverse completely.

The transmission itself is fine and does not need replacement. $1,600-$2,200 is probably not even what the car is worth. The valve body needs to be changed out with a rebuilt one and the input shaft nut needs to be replaced and torqued down properly. Both of these are easily done by any backyard mechanic. Roughly 3 hours will have your transmission shifting like new.

I rebuild Saturn valve bodies (check my ad for more information) and provide instructions on how to do the repair. It costs much less than what any shop will tell you and they'll tell you the transmission is toast...IT IS NOT!

Any questions, just let me know.

Jan 05, 2010 | 2001 Saturn SL

1 Answer

Auto transmission slipping

You may have a failing valve body which tends to hang up on metallic debris. Several electronic actuators are present in the valve body and their elctro-magnetism draws this metallic debris then hangs valves.replace control valve body

Sep 25, 2009 | 1999 Saturn SL

2 Answers

2002 Saturn SL1 - Losing reverse and second gear

The simple answer is that there are two loose nuts in the transmission.

The output shaft nuts are loose. The are behind a cover that you can see through the driver's side wheel well.

Jul 04, 2009 | 2002 Saturn L-Series

1 Answer

1992 saturn sl2 transmission problems

You can try to do the reverse slam fix, which is easy to do:
Reverse slam fix

If it doesn't work, your valve body is probably bad, here is how to swap it, in case you are up for the challenge:
Swapping a valve body on a saturn TAAT trans.

An other possibility is your mainshaft nut could be loose, I don't have an article up for it yet, but it's comming.
An other possibility is that you have a bad VSS (or Vehicle Speed Sensor).
In any case, your transmission is probably OK, the valve body is accessible from the top of your transmission, right under the battery tray.


Jan 12, 2009 | 1999 Saturn SL

1 Answer


your valve body on top of trans. is probably the problem.

Jan 08, 2009 | 1993 Saturn SL1

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