Question about GMC Sierra 1500

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The transmission oil does not drain back. When cold the oil dipstick shows it over full. On short trips the oil comes out of the vent.

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Sounds like u have over fill the tranny with fluid,Transmission fluid is checked while the vehicle is running and in park let the motor/transmission heat up to normal operating temp.pull dip stick and see where the fluid is, it should be right around the full mark,just as long as it is in the hash marks on the dip stick is fine NEVER CHECK TRANNY FLUID WHEN IT IS COLD OR ENG IS NOT RUNNING on automatic tranny this will result in a in false reading.
If u have over filled it u have to drain some of the fluid out this is a messy job put a large contaner like a tub for draining oil from the eng.trnny's do not have drain plugs sooo u have to very carfully unbolt the oil pan not all the way though just a enough to let some fluid drain out,u might have to use a small flat blade screw driver to pry lose the oil pan Becareful not to damage the gasket,when u go to retighten the bolts,tighten them figer tight then about a quarter turn with a wenrch do not over tighten this will cause a weak,,hope this helps

Posted on Apr 02, 2011

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1 Answer

Car is cold dipstick shows full when hot shows low


Don't worry to much about that as long as it is with in range on the dip stick. When cold all the oil has drained back to the sump and when hot some of the oil is still up in the heads around the valve gear.

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How to check transmission oil


park car on level surface, pop hood and by the firewall is a red trans fluid dipstick. lift up to unlock,pull out dipstick wipe fluid off, put dipstick all the way in and pull back out. look at level on stick. there is a full cold and full hot line. if you haven't been driving then look at full cold. if you have been then full hot. If you need some fluid top up through the dipstick tube

Mar 18, 2013 | 2001 Chevrolet Blazer

1 Answer

My Astra holden has 2 dipsticks one i know is for oil level the other just a /14 inch from the oil dipstick is my question , what is the second dipstick for??


Might you have an automatic transmission?
Automatic transmissions have their own dipstick.
I don't know about Aussies, but here in the states, transmission fluid has red die added to it to prevent your mixing them, and to tell you whether it is engine oil or transmission fluid that is leaking.
If you mix them by mistake, you must drain them and put in the correct fluid, or suffer ruining the engine or transmission, which ever one has the wrong fluid.
Your oil light should not be coming on. That is a different problem.
Oh, yes. There may be a dipstick on the power steering pump it you have power steering, but it should be really small. (short)

Jan 19, 2013 | Cars & Trucks

1 Answer

Fluid drains back into trans. after sitting a short time


without more information it simply sounds as though your transmission has way too much fluid in it. Normally if you pull the dipstick while cold and the motor is off it will be low on the stick. When running and warmed up (the normal way to check the level) the level will have risen. If you filled it to the line while cold and turned off there is no doubt the transmission is over-full. In that case you don't really want to drive it. I have yet to hear of a manufacturer that didn't warn against such action. Perhaps you could get someone who is knowledgable to drop by and drain your transmission then fill it properly?

Oct 30, 2012 | 1970 AMC AMX

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Weird! I have put in too much oil in to my 2001 Jetta TDI. I take off the plug and drain it, but it's still away above the full mark, and now, no oil comes out of the pan! Never seen anything like it....


are you sure your checking the motor oil level with the motor oil dipstick and not the trans dipstick,or your removing the wrong drain plug and not draining the motor oil but another oil like transmission.

Sep 18, 2011 | 2001 Volkswagen Jetta TDI

3 Answers

Transmission oil coming out the funnel


If you mean it is coming out of the fill/dipstick tube, then quit driving this car. You will trash the transmission, if it hasn't already happened. Usually when this happens the transmission cooler inside the radiator has busted, and is pumping coolant into the transmission. Then again I have seen some people just overfill it to the extreme. But either way it needs to be checked. This involves dropping the transmission oil pan.

Aug 08, 2011 | 2002 Ford Taurus

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Describe your 460l-e automatic transmission vents problem here: This is a new install (6000 miles ago) - GM rebuild 4.3L V6 coupled to a 4L60-E AT (also GM rebuild), in my 2002 S-19 Blazer. Fluid level...


I have seen this happen often, most of the times it is due to a dipstick an old dipstick seal, needs to always be replaced when replacing transmission. seal does not come with transmission, or if you pull the tube out and drain some fluid out with a suction gun. you can clean the area free of oil and residue with brake parts cleaner (use safety glasses, will irritate eyes if any spray splashes back at you) re-seal it with Hi-temp. rubber silicone sealer.

Jul 30, 2011 | 2002 Chevrolet Blazer

1 Answer

I have a 2003 standard toyota corolla, i cant find a dipstick for the transmission fluid. is there one? and i had my transmission changed about 4 months ago on a road trip, paid cash, so therefore cant...


there will be no dipstick for a standard transmission,only automatic.an easy way is to go through a drive through oil change place,& ask them to check it. Or get a shop manual for that car, or you could crawl under the car & locate the filler plug on the transmission.remove the plug & add oil once the oil starts too run out of the fill plug it is full.

Apr 09, 2011 | Toyota Corolla Cars & Trucks

1 Answer

How do i change the transmission fluid


1. A variety of fluids are used for different transmissions. Automatic transmissions use something called - shockingly - automatic transmission fluid. Manual transmissions use a variety of oils: regular motor oil, heavyweight hypoid gear oil or even automatic transmission fluid in some cases. Your owner’s manual will tell you what your transmission calls for. So, get to know what type of transmission fluid should be used for your vehicle. This information is contained in your owner’s manual - if not contact the manufacturer who should be able to tell you.
2. Park your car so that it is level on the ground and leave the gear in Park or Neutral position. Usually the ATF is checked at the idling engine but everything depends on your vehicle. Firstly read your owner?s manual carefully and if it requires the engine to be running, start the car up and wait for it to warm.
3. Locate the ATF dipstick. Usually it is a bit shorter than the engine oil dipstick. In some cases it will have a label on it, so your job will be made much easier!
4. Take the dipstick out.
5. Do the same once again in order to make sure the dipstick indication is true.
6. The color and smell of transmission fluid can also indicate potential problems. Wipe the fluid onto a white sheet of paper or kitchen towel. It is usually red, and should be transparent and clean in appearance and free of black bits or flakes. It may be more reddish-brown because of age but never should be dark or black or smell of burning. You may not be able to fix the car if the fluid shows some of these characteristics, so just seek professional advice.
7. Check the top of the dipstick and see if the fluid marking comes up to the ‘full’ line. Also check that you are looking at the warm reading - there should be one for ‘warm’ and one for ‘cold’.
8. You need to add some more fluid if it does not come to up to the ‘full’ line. Unlike engine oil, transmission oil doesn’t burn up. So if you’re low on transmission fluid, you almost certainly have a leak. Carefully look for leak and if you find it remove as soon as you can. In case it is left it can cause the expensive repair of transmission system.
9. To add the fluid, simply use a funnel to pour it into the system. Add the fluid slowly and keep checking the dipstick until it reaches the ‘full’ point. Remember, you’ll waste your time taking the ATF out again if you add it too much.
10. Wipe the dipstick when finish the work and make sure it is back in securely.

Dec 24, 2009 | Jeep Liberty Cars & Trucks

1 Answer

Transmission stuck in neutral (automatic) won't engage drive or reverse


first i would check the transmission oil, do this by starting the engine and leave it running, select all the gears (park, Reverse, neutral etc) then put it back to neutral, leave engine running then locate the transmission dipstick in the engine bay, remove and wipe the dipstick, replace then pull out again, if the oil is showing between the cold and hot marks then level is ok. I shoing lower or none, top up the oil level with automatic tansmission oil, keep rechecking the oil level as adding oil as to ensure it is not over full. will need to select all gears again before checking oil level again.
If the oil level is correct than quite likley a Transmission failure will require mechanic.

May 02, 2009 | 1988 Nissan Pulsar

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