Can not get the oil pan on my 99 vw bettel to come off.

hi george.
see if this link helps you find out.
chevy express oil pan bolts sizes Google Search

Drain the oil and remove the screws/bolts that hold the pan into place.

Then use a flat-blade screwdriver to gently prise the pan free.

Clean both mating surfaces of pan and block - remove all traces of the old gasket.

Smear some sealant compound on the oil pan - this will hold the new gasket in place. Put the new gasket onto the oil pan and align the bolt holes. Lift the pan into place and tighten the bolts.

The photo below is a generic image of oil pan with gasket.

You are most likely going to have do as Ray said and pull engine up with cherry picker or GOOD JACK to back the tranny off the rear main seal. Keep in mind that The oil pan has a front and rear main seal that may need to be replaced when you do this. Not a quick job. Get a Chilton book and read the section regarding oil pan gaskets and seals. Hope this helps

Oil pump: internal (inside oil pan) remove all bolts securing oil pan, remove and reinstall oil pump. Replace oil pan gasket, replace old oil. Approximate 2-4 hrs.
OBD2 iPhone

- Uniformly loosen and remove the 11 bolts.
- Using a screwdriver, remove the stiffening crankcase by prying
between the stiffening crankcase and cylinder block.
- Be careful not to damage the contact surfaces of the crankcase and cylinder block.

I think they possibly mean an oil level sender because that mounts in the side of the oil pan. It just a float switch, puts a light up on the dash idiot lights to tell you to put more oil in. Look up both sides of the oil pan, it will be a round bolt in affair about the diameter of an orange.
If you can't see one then it's the model without the oil level sensor.

Terry

Yes, you need to pull the engine to remove the oil pan. This requires that you remove the propeller shafts and the third cross member to slide the transmission toward the rear of the vehicle. I suggest you purchase a service manual before you start this process. More than likely the rod bearing for cylinder 1 has failed. This seems to be a common problem with later model 3.5L Trooper engines because the oil pump and oil gallery do not deliver oil as efficiently to the number 1 rod bearing.

there should be 2 x pins,both in bottom of block,one front/one rear but pan is glued on.....as well as bolted.pull harder....

Not really! But it might be necessary to get it to shop in case you have some big, rusty, tough bolts/nuts to remove first, before you get out the oil pan. Jack up the car and support it on jack-stands. (you might remove a front tire or both for good visibility) The oil-pan is usually held up by small bolts around it. So try and work your way around it and see if there's no major obstruction to those small oil-pan bolts.

It's a direct shot....

Removal & Installation

1. Disconnect the negative battery cable. Raise and safely support the vehicle.
   
2. Drain the engine oil into a suitable container.
   
   1. Remove the transaxle converter cover.
      
3. For 1986-90 vehicles, remove the starter motor from the vehicle, as outlined in Section 2.
   
4. Remove the oil filter.
   
5. If equipped, disconnect the oil level sensor.
   
6. For 1996-99 vehicles, remove the oil level sensor. On these vehicles, the oil level sensor must be removed prior to removing the pan. If the pan is removed first, damage to the sensor may occur.
   
7. Remove the oil pan-to-engine bolts and the oil pan. Remove and discard the oil pan gasket. The formed rubber oil pan gasket cannot be reused.
   
8. If necessary, remove the oil pump pipe and screen.
   
9. Thoroughly clean the gasket mounting surfaces.
   

To install:

1. If removed, install the oil pump pipe and screen. Secure with the retaining bolt(s) and tighten to 89 inch lbs. (10 Nm).
   
2. Place a new formed rubber gasket in the oil pan flange.
   
3. Position the oil pan and secure with the oil pan-to-engine bolts. Tighten the bolts to 124 inch lbs. (14 Nm). Do NOT overtighten the bolts, as this will damage the oil pan, causing a leak.
   
4. For 1986-90 vehicles, install the starter motor and transaxle converter cover.
   
5. Install a new oil filter.
   
6. For 1996-99 vehicles, install the oil level sensor.
   
7. If equipped, connect the low oil level sensor wire.
   
8. Carefully lower the vehicle.
   

WARNING Operating the engine without the proper amount and type of engine oil will result in severe engine damage.

1. Fill the crankcase with the proper type and amount of engine oil.
   
2. Connect the negative battery cable, then start the engine and check for leaks. Check the oil level and add if necessary.