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hey William are you sure that oil was not spilled while adding?anyway it could be the grommet for the tube that is leaking the truck is now 11 years old depending on the build date on your door sticker and from years of operation and engine heat this could now be the problem was the truck overheating in the past or now the higher engine temperature would have an effect on the grommet and possibly the tube check for cracks is your truck burning oil do you see it as blue smoke in the exhaust if so the smoke going through that tube would eventually cause a liquid oil build up if it were leaking post back and we'll take it from there it's possible also that the screen in the oil pick-up tube in the oil pan is clogged causing backwards oil circulation from the spinning crank shaft rotating in to much oil that should not be there because the oil pump can't get the normal amount of oil out of the pan so a backwards circulation would exist and now the oil is filling up the cylinder head because it's traveling up through the normal holes that the oil drains through to go back to the pan and now it has no place to go it can not go through the lifters and the push rods because the holes in the push rods are to high for the oil to reach which is where it normally comes out of the rods to bathe the rockers and springs connected to the valve train and if this is an overhead cam engine the cam is not getting oiled properly is there any noise like tapping or banging coming from the motor is there a check engine light on also?
The 2006 Cobalt does not have a dipstick check tube at all. It is normally a non-serviceable component unless there is a leak. When the pan is removed, for service you would normally add 6.9 US quarts to the transmission. I will paste the GM instructions for servicing the pan below.
2006 Chevrolet Cobalt
Automatic Transmission Fluid Filter and Seal Replacement
• J 6125-1B Slide Hammer
• J 23129 Axle Boot Remover
1. Raise and support the vehicle.
2. Place the drain pan under the transaxle oil pan.
Notice: When removing the oil pan bolts, be careful not to damage the oil pan sealing surfaces. Such damage may result in oil leaks in this area.
3. Remove the oil pan bolts from only the front and the sides.
4. Loosen the rear oil pan bolts about 4 turns.
5. Lightly tap the oil pan with a rubber mallet or pry in order to allow the fluid to drain.
6. Inspect the fluid color.
7. Remove the remaining oil pan bolt
8. Remove the oil pan.
9. Remove the oil pan gasket.
10. Remove the oil filter. Use a long screwdriver in order to pry the oil filter neck out of the seal.
11. Check the oil filter seal for damage or wear.
12. As needed, remove the seal using the J 6125-1B and the J 23129 .
1. Install a new seal, as needed. Before installing, coat the new seal with a small amount of J 36850 or petroleum jelly.
2. Install a new filter into the case
3. Install the oil pan gasket. Use a new gasket if the sealing ribs are damaged.
4. Clean and dry the oil pan. Inspect the pan for damage and replace the pan if necessary.
5. Install the oil pan.
6. Clean and dry the oil pan. Inspect the pan for damage and replace the pan if necessary.
7. Install the oil pan.
8. Install the oil pan bolts.
Tighten the bolts to 10 N·m (89 lb in).
9. Lower the vehicle.
10. Fill the transaxle to the proper level. Refer to Fluid Capacity Specifications .
11. Inspect the pan for leaks. Recheck the transmission fluid level. Refer to Transmission Fluid Checking .
I would look for other leaks. If you are sure it's leaking at the dipstick tube, there is normally an o-ring where the tube presses into the engine. In general, this is an odd place for a leak, as ther eshould be no oil pressure in the pan (where the tube terminates) and unless the engine is overfilled with oil, the tube end shouldn't be immersed in oil to leak. IF there is pressure in the oil pan, that generally indicates bad rings. I have seen engines where the oil dipstick actually pops out of the tube under pressure when the engine is running due to pressure in the oil pan from blow-by at the rings.
It sounds to me that your problem is above the headliner. There are drain tubes at each corner of the sunroof pan that allow water to drain under an outside of the vehicle. It sounds like one of the front tubes has either cracked, come off, or are just plugged up and allowing the water to overflow the pan.
Could be: Oil Pan Gasket. OR the OIL LINE coming out of the oil pan and to the oil cooler in the radiator on the passenger side.. If it is engine oil, and not in a large quantity, like a drip on the driveway, look to the oil pan or the fitting. It is not too bad to replace- dirty, but not bad as it is fairly clear of obstructions. let us know and we'll walk you through it.
It's not uncommon for the oil pan to get stuck. This usually happens if the gasket was not put on correctly and gunk gummed up the seal, essentially gluing it in place. Use a small nylon, wood or leather covered hammer and tap around edge of pan. (use a lot of light taps to avoid denting the pan). Continue tapping until oil pan comes free. Don't try to pry off as this will deform the pan causing an uncontrollable oil leak.
Check that the oil filter if firmly screwed onto the engine. If not then drain the oil, undo the oil filter. Wipe the surface of the oil filter connector on the engine so its clean. Get a new oil filter and smear a small amount of oil on the rubber seal. Screw the filter into place making sure it is a tight seal. Re-fill the engine with the right amount of oil. You should be good to go. Check that the oil leak is coming from the filter before you start as it could be something more serious eleswhere like the head.
This is what I found on my 1998 with a 3.0 motor
Most likely you have a rusted pan with a hole on the passenger side of pan, clean
the oil pan real good and inspect it real good and check for small
Also the transmission pan is also known to rust through on the left side top and bottom, Salt and brime plays heck on all pans and brake lines
On an automatic tranny, the tranny oil pan is removed to drain the tranny fluid - a somewhat messy job. Typically when this done the tranny filler is replaced. A new pan gasket is installed in this procedure.
On the manual tranny, there is a drain plug at the bottom side of the tranny to drain the oil.
I have used a home made setup using a suction pump with small diameter tubing to **** the fluid out from the tranny filler tube. This is when I was replacing the filter and I dropped the pan. I did the suction routine to avoid all that fluid dripping out when you loosen the pan.
Have you located the leak? Is it from the tranny oil pan or maybe from a tranny cooler line?