Dipstick tube came out and i cant find the hole to put it back in

if oil not on the dipstick you might be 2 qtrs low on oil did do an oil change on it your car holds 5 quarts

there shouldn't be a filler tube, just a dipstick tube for checking the oil level. to put the oil in the engine, there should be a oil cap on the right hand side valve cover. if the dipstick tube isn't there, you definitely need to get one from a parts yard or store, you can be losing oil from the dipstick hole that goes to the oil pan...

The dipstick tube should be as high as the top of the engine, and you should be able to remove the dipstick from it by simply pulling it straight out (no unscrewing).
No oil should come out because engine oil only goes up about a third 1/5th the way inside the engine. So unless it is overfilled, you shouldn't worry about pulling the stick up and out.
Check the oil level with the car on level ground, and with it turned off for at least 10 minutes so all the extra oil drips down to the bottom of the engine first. Then pull the stick straight up and out, wipe all the oil off of it using a paper towel or clean tissue, then put the dipstick back in (you may need to turn it left or right just a little bit to help it past some of the bends in the tube). Push it ALL the way in, then pull it straight back out again. Look for the oil sticking to it at the bottom. You should see a clear line somewhere between the full and fill lines.
If it is low, but there is at least SOME oil, take it to a Jiffy Lube and have them check and top it off. IF there is NO oil on the stick, you should not start it until some oil is added.
I cannot go in to how to add oil here as it is different on different cars - but you do NOT put oil into the dipstick hole.

That is where you put the oil when you are low on oil or when you an oil change. When you open the hood you should see a oil dipstick. Make sure the car has been off for at least 5 to 10 minutes. Have a clean paper towel and remove the dipstick. make sure its the dipstick if you have an automatic transmission. trans fluid is red in color oil will be golden to dark black depending on how often you change the oil. wipe the dipstick off and at the end you will see a full mark near the end. Replace the dipstick back into the tube you removed it from and pull it out again, check the end where it says full. If there is oil up to the full mark your good, if not add oil through the oil cap hole in valve cover top. re-wipe the dip stick and check to see if full. Add oil as needed. If you keep up with your oil changes as required depending on the oil requirements. 10w30 regular oil is every 3,000 miles. Castrol synthetic oil is every 21,000 miles. Use a good oil filter. Consult your auto parts dealer.

wondering what became of this problem, i just experienced this same thing todaywent to check oil and noticed the dipstick was sitting in a different spot, went to move it over and it was quite loose, so pulled up and the stick and housing came with it

It's not welded. Most of the time it is just a pressure fit with possibly a bolt and clamp that holds that in place someplace along the tube. Your looking for a 1/2" hole along the side of the block where the oil pan mounts. The hole is on the engine not the oil pan. When you locate it just stick the tubing back in and tap it lightly to seat it. Look for a clamp and bolt to lock it back down or if the tube has a bracket attached to it look for a suitable location to bolt that to the engine block.

alot of the chevys u cant check. but if there is a dip stick for it the car has to be running while u check it.

you have to locate the tranny dip stick and pull it out- then get a funnel that will fit down the hole- and slowly pour in tranny fliud. check level by putting dip stick back in (allow time for fuild to drip down out of the tube) make sure engine is running and is warmed up while reading fluid level on dipstick. Make sure it is the tranny dip stick and not the oil dipstick. oil is usually yellow and says oil on it- Trans is usually red.

Needle nose plyers.
If those wont reach in far enough - you might have to remove the dipstick tube..

get a flashlight and look along the exhast manifold you should be able to see a little hole under it between the exhast outlets