Question about GMC Sierra 1500

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Used trans just installed now no reverse and all forward gears slip and whine?/ what can i do?

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Check the level, some places drain the trans before shipping, they also remove the filter,

Posted on May 09, 2010

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1 Answer

V70 poured new Dex3 auto trans in. Reverse gear stops working after a few days equal 500km, but all forward are still ok.


Sounds like your transmission is going bad. If your transmission is slipping only in drive or forward gears, then it could be just that it is low on fluid, but when reverse starts to slip it usually means rebuild/replace transmission.

Good luck

Dec 02, 2013 | Cars & Trucks

2 Answers

Car whines when in reverse


You didn't say if it was an automatic or a manual transmission. If it is a manual, whine in reverse is normal because the reverse gear is straight cut. The forward gears are helical cut so they don't whine.

Jun 18, 2011 | 1996 Honda Civic

1 Answer

My 1993 ford tempo 2.3L wants to slip in reverse but changed trans fluid and was very clean and works fine in all forward gears. Is trans going out or could it be an adjustment?


be careful when changing gears into reverse and be careful while in reverse and your transmission should last but if you ride on that gear to much your transmission will fail and you will no longer have reverse in your vehicle even if you have all other gears working

Apr 26, 2011 | 1993 Ford Tempo

2 Answers

I have a 1998 Oldsmobile Bravada auto trans drive works fine but no reverse


Are you sure you have all 4 forward gears? Most of the time a no reverse condition also means 1st and 3rd only.No 2nd or 4th.If you dont have all the forward gears as i suspect , the reaction shell is stripped or broken.If you do have all the forward gears then these are the two most common reasons you do not have reverse.1 reverse input clutches are damaged or burnt 2 forward cltches have slipped to the point they are welded together causing a mechanical bind in reverse and also causing the transmission to pull forward in neutral.Let me know if i can help.Good Luck.

Feb 28, 2011 | 1999 Oldsmobile Bravada

1 Answer

Only reverse works. No foward gears.


No forward movement in OD or D, but L2, L1 and R work: Forward sprag is broken. R&R. Try not to run or drive the car or further damage could result.

Do you have manual 1st? If so, can you shift through the gears...i.e. manual 1st to manual 2nd then 'D' then 'OD'??? Only 1st and 2nd gears use the forward sprag unless the LO/Rev clutch is engaged...i.e. 1st and 2nd if in "drive". If you can shift threw the gears manually then, yes, your forward sprag broke.

If no manual 1st then your sprag is not what broke. Sounds like you blew up the rear planet. If you pull the pan and find chunks of iron and steel, then that is probably what happened. If you have reverse then it is not the pump. If the pump was bad you would have no line pressure and it would slip in rev. or no rev. Not the beef sun shell either because you have rev., a broken sun shell would cause no 2nd, 4th and rev. gears. Either way the trans needs to come out and torn down and it will be easily found what went. Good luck and thank you for using Fixya.

Mar 06, 2010 | 1991 GMC C1500

1 Answer

2002 GMC 1500 Four wheel drive. I was turning around and when i did and went to reverse. the truck made a clucking sound as it always does. but this time it started too whine and I try to go forward it...


Do you have proper Trans Fluid level. When you never change the fluid every couple years you end up with these issues. Dirty valve body in trans,bad solenoid pack or internal damage.

Sep 27, 2009 | 2002 GMC Sierra

3 Answers

No reverse after rebuild on 4L60E Transmission from 1995 GMC Sono


There isn't a modulator on this trans as it is electronic

You can have first gear going forwrd but no reverse. It is possible. The low/ reverse clutch isn't needed to go forward.

Jan 19, 2009 | 1995 GMC Sonoma

1 Answer

Rebuilt the Trans.(4L60E) in my 1995 GMC Sonoma PU and after installing it I have no reverse? What went wrong? all forward gears work fine. Also seems like there is a slight whining noise in forward...


did you do the rebuild or did a shop do it? it sounds like the clutches werernt done properly. if the reverse is out the other gears will go out too if driven too far in that condition,

Jan 19, 2009 | GMC Sonoma Cars & Trucks

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