Not moving engine runs well I drian the gear oil

if its the the gear selector is moving and not going into gear ----under hood drivers side under brake mastercylinder is the top of transmission the gear selector cable connection is there check that it hasnt come off,loose or damaged ----=if selector does go into a gear and trans not responding look under drivers side and thru wheel wells for fluid leak ---theirs no dipstick so to check fluid
There is a black cap located on top of the trans almost directly under the brake master cylinder. It's about 2 inches high, 3 inches around. That's where you add the fluid. The checking procedure is as follows: Start the engine and allow the engine to idle until the transmission fluid temperature has reached the value specified. 104 degrees F.
Depress the brake pedal and move the shift lever through the gear ranges, pausing a few seconds in each range. Return the shift lever to the PARK range.
vehicle must be level with the engine running and the shift lever in the PARK range.
Remove the transmission oil level control plug.
The plug in an 11mm bolt located between the r/s axle seal and the oil pan.
Check the fluid level. The fluid level should be even with the bottom of the threaded plug hole.
If you remove the plug and nothing comes out, add about half a quart at a time until the fluid starts to dribble out. Once it stops, the level is good.this is the procedure to check fluid if their is fluid and problem still persists the transmission module and or internal transmission damage possible which a mechanic {transmission}would need to diagnostic check the following link has multi videos for the cobalt transmission 05 Cobalt Transmission Fill Yahoo Video Search Results

If auto you refill through the auto dipstick, If manual you will find a plug approx 1/3 - 1/2 way up the side of the g/box. The engine oil drain plug will be infront of the gear box (should be a 14 mm bolt) located on the engine sump.

Hi there, hope these few steps help:

• Raise the car with a jack and support the vehicle with jack stands sufficiently rated to safely support the weight of the vehicle.
• Place a large drip pan under the transmission.
• Remove the transmission fluid drain bolt with a wrench. The drain bolt is located at the bottom of the transmission facing the pan. The pan is the large flat plate that covers the very bottom of the transmission.
• Drain the transmission fluid into the drip pan.
• Reinstall the transmission fluid drain bolt with the same wrench used to remove the bolt.
• Lower the vehicle to the ground after removing the jack stands.
• Open the hood and remove the transmission dipstick from the filler tube by pulling the dipstick. The end of the dipstick will be curved into a circle to allow a finger to slide into the circle to withdraw the dipstick.
• Place a funnel into the dipstick tube and fill the transmission with new fluid by pouring the fluid into the dipstick tube.
• Remove the funnel and check the fluid level with the dipstick until the fluid reaches the "Full" mark on the tip of the dipstick.
• Start and allow the engine to run for a few minutes.
• Move the transmission gear selector through all of the gears while depressing the brake pedal.
• Turn the engine off and check the fluid level on the dipstick. Add transmission fluid if necessary.

Best of luck.

The pan needs to be removed to change the filter. Use a large pan to catch the oil and remove the pan bolts slowly or you will have a big mess. After you have replaced the filter, Clean and reinstall the pan using a new gasket. This should stop the leak if the old gasket was bad. Dont over tighten the bolts. Measure the oil drained and install the same amount of new fluid through the trans dip stick. Start the engine and shift through all the gears with brake on. Check fluid and add if necessary. Not a bad job, just a little messy..

TO DO A TRANSMISSION FLUID CHANGE YOU NEED HAVE TRANSMISSION FLUID ON HAND YOU NEED TRANSMISSION FILTER AND GASKET.YOU NEED 3/8 WRENCH THE RATCHET TYPE WITH METRIC SOCKETS. YOU NEED JACK TO RAISE VECHICLE SUPPORT VECHICLE ON JACK STANDS.YOU NEED A DRAIN PAN. ONCE YOU GET VECHICLE OFF GROUND.PLACE DRAIN PAN UNDER TRANSMISSION OIL PAN REMOVE OIL PAN DRAIN BOLT.LET FLUID DRAIN OUT IN DRAIN PAN THEN SCREW DRAIN PLUG BACK IN PLACE DONT OVER TIGHTEN.REMOVE OIL PAN AND GASKET. BESURE TO HAVE PAPER TOWEL ON HAND.MAKE SURE TRANSMISSION OIL PAN GASKET SURFACE CLEAN BEFORE INSTALLING NEW PAN GASKET. ONCE TRANSMISSION OIL PAN REMOVED. REMOVE THE OLD TRANSMISSION FILTER INSTALL THE NEW FILTER.THEN WITH NEW GASKET ON OIL PAN IN PLACE.OIL PAN NEED TO BE CLEAN SO THE GASKET ADHESIVE WILL HOLD PAN GASKET IN PLACE WHILE INSTALLING PAN AND GASKET TO TRANSMISSION.INSTALL OIL PAN BOLTS INSTALL THEM CRISS CROSS TORQUE PAN BOLTS TO 7 TO 10 FT LBS. LOOK IN OWNERS MANUAL FOR TRANSMISSION FLUID CAPACITY.BUY 10 QUARTS .TO BE ON SAFE SIDE SO YOU WILL HAVE ENOUGH FLUID ON HAND. IF YOU DONT HAVE NO TRANSMISSION FLUID CAPACITY. ADD 7.5 QUARTS FLUID.WAIT FOR 2 MINUTES.CHECK TRANSMISSION FLUID LEVEL ON DIP STICK. SHOULD BE ON THE FULL MARK.CRANK VECHICLE UP.LET IDLE FEW MINUTES CHECK TRANSMISSION DIP FLUID LEVEL IF DROPPED ADD LITTLE MORE.WHILE ENGINE IDLING GETTING WARM UP. KEEP EYE ON FLUID LEVEL.WHEN FLUID LEVEL STOP DROPPING. APPLY BRAKES HOLD FOOT ON BRAKES SHIFT THROUGH ALL GEARS TWO TIMES. THEN CHECK FLUID LEVEL SHOULD BE ON FULL MARK.CHECK FOR LEAKS WHILE ENGINE RUNNING.

Not other then having a oil pan large enough to hold the transmission oil that's going to drain from the transmission.

Drain the Transmission Fluid and Replace the Filter
Raise, support and level the buick on jack stands or ramps. Place a drain pan that can hold at least 4 quarts of fluid beneath the transmission.
Employ a socket wrench to remove the retaining bolts on the fluid pan, except for the two on either end. Loosen the two bolts on the lower end of the pan. Gently pull down on the edge of the pan so that it separates from the transmission case. Let the fluid drain. You may need to tap the pan with a rubber hammer to separate the pan from the case.
Remove the last four bolts and the pan when the fluid finishes draining. Loosen the bolts a little at a time, allowing the remaining fluid to drain. Clean the pan and the magnet inside.
Scrape the old sealant from the pan flange with an appropriate scraping tool. Do the same on the mating surface of the transmission case.
Remove the filter, Look for the filter and the O ring between the filter and valve body and remove it.
Install the new transmission fluid filter and gasket. Place the new gasket on the mounting flange of the fluid pan. Replace the fluid pan on the transmission and tighten the bolts to 165 inch pounds with a torque wrench. Return the Buick to the ground.
Replace the New Transmission Fluid
Pour 4 quarts of ATF fluid into the filler tube using a funnel. Start the engine and let it idle for a minute or two. Apply the parking brake and the service brake. Move the gear selector through the gears and stop at "Park" or "Neutral.
Add enough fluid to bring the level to 1/8 inch below the "Add" indicator, if needed. Let the van run for another 10 to 20 minutes to allow the engine and transmission to reach a normal operating temperature
Check the fluid level again to ensure it reached the "Hot" indicator on the dipstick. Add more fluid if needed and replace the dipstick in the filler tube. Turn off the engine.
Good luck and hope this helps.

u have to drop the pan and chane filter

Check fluid level every 12 months or 7500 miles, whichever comes first. Transmission fluid and filter should be changed every 100,000 miles. On THM 250C transmissions, intermediate (front) band requires adjustment every 60,000 miles, or as required.
1. With vehicle on level surface, apply parking brake and let engine run at curb idle. Move selector lever through all ranges, ending in "PARK". Remove dipstick and wipe clean, reinstall, then remove again and check fluid level mark on dipstick. Fluid level should check between "ADD 1 PT." and "FULL HOT" marks on dipstick.
RECOMMENDED FLUID Use only Dexron II or equivalent automatic transmission fluid.
CAUTION: If vehicle has been operated for an extended period of time at high speed, or in city traffic in hot weather, or if vehicle has been pulling a trailer, an accurate fluid level cannot be determined until fluid has cooled down (approximately 30 minutes after vehicle has been parked).
So let's get started... 1. With vehicle raised and drain pan placed under transmission, remove front and side transmission oil pan bolts. Loosen rear pan bolts approximately 4 turns each.
2. Carefully pry pan loose with screwdriver, allowing fluid to drain. Remove remaining bolts and oil pan with gasket. Remove screen/filter-to-valve body bolts and remove screen/filter with gasket.
3. Thoroughly clean pan and screen with solvent and dry with compressed air. Paper type filters should be replaced. Install new gasket or "O" rings, lubricated with clean oil, into screen/filter assembly.
4. Install screen/filter assembly to transmission. Use new pan gasket and install pan. Add proper amount of fluid to transmission through filler tube.
5. Start engine with shift selector lever in "PARK" position and with parking brake set. Check fluid level and add as required. CAUTION: DO NOT overfill.
Best of luck :)

Your trans takes 7.4 quarts of Trans SynD,you won't need this much as there will be fluid left in the torque converter.Pull all the pan bolts except on one end just loosen them,this will allow you to drop just one end of the pan to drain the fluid,pull the rest of the bolts and clean the mating surfaces,pull the old filter off and install the new one.Re install the pan with a new gasket using a criss cross pattern to torque the bolts.The bolts should be torqued to about 18 ft/lbs.Add new fluid(about 5 quarts to start)start the truck and with the your foot on the brake go through all the gears,let it stay in each gear for a few seconds allow the gear to engage and try to move the truck,this allows fluid to move into the respective valve assemblies.Let the truck warm completely and check the fluid level.Add if needs it,and run through the gears again.Check the fluid level again and add till full.Check the pan for leaks if there is re torque the bolts in a criss cross pattern again and this should take care off it.That should take care of it.It wouldn't hurt to pick up a manual for your specific year and model as these are general instructions,and a manual will have the specifics for your truck,Hope this helps and have a good day!

More than likely, like most automatic transmissions, yours does not have an oil plug. You need to drop the transmission oil pan to drain the old oil... You need to buy a transmission filter/pan gasket kit. The filter is located on the bottom of the tranny. You will see it when you remove the pan. Replace the filter, thoroughly remove any traces of old gasket material, clean the mating surfaces, and reinstall the pan with the new gasket. Torque the pan bolts to the manufacturers spec (you should be able to get this where you buy the filter/gasket kit). Refill the transmission through the dipstick (Capacity for the Voyager is 4 quarts, make sure to use ATF Plus (Type 7176) for your particular tranny, NOT Dexron, Mercon, or generic automatic transmission fluid, Chrysler transmissions do not like any other kind and tend to fail quite quickly with the wrong fluid). Fill to the full cold level. Start the engine, move the shifter through all gear ranges, and put it back in park. Leave the engine running and refill to cold full. Drive the car for 5-10 minutes and, with the engine still running and the car in park, fill to Hot full. You should be ready to go!