3.8l awd. how much transmission fluid goes in to a completely empty system,and what type of oil for transfer case.

Checked how? Some AWD drive cases are fed fluid from the transmission. Some are separate. I haven't seen any rebuilt yet. these cases aren't much. The controls are in the rear differential and transmission.

Whenever this warning light or any other stays on in the dash it is indicating that the systems control module (or the system sensor in the case of lights like low oil pressure, door open indicators etc.) has detected a fault, it then disables the system (this applies to ABS,TCS, TCM, SRS and BCM faults and others) as long as the light is on. You must now have the dealer hook up a special electronic diagnostic tool and "scan" the system for the fault code that is stored for the problem(s)

Legend of Abbreviations. ABS Antilock brake system.TCS Traction control system, TCM Transmission control module, SRS Supplemental restraint system, BCM Body control module

Ask someone who knows. Contact a dealership or do some searcing and reading on the web.

Your radiator is connected to the transmisiom to cool the transmission. the tank in the radiator has ruptured and transferring fluid to where it should not be. solution replace radiator. This will transfer trans fluid to cooling system and vice versa. I can not see the trans oil ending up in the engine oil sump for any reason?

If it's a manual case ( pull stick ) then it's dexron III automatic trans fluid , if it's automatic ( push button ) then use GM part # 12378396

GM Full-Size Trucks 1980-1987 Repair Guide

Transfer Case - FLUID RECOMMENDATIONS
The type of lubricant used in the transfer case varies with model year and type of transfer case. Refer to the list below for the type that applies to your truck.

1980
Conventional transfer cases require SAE 80W or SAE 80W-90 GL-5 gear lubricant.
Full time systems use SAE 10W-30 or 10W-40 engine oil.
1981
Conventional transfer cases require DEXRON®II transmission fluid.
1982-85
All transfer cases require DEXRON®II transmission fluid.
1986-87
All transfer cases except the K30/35 series require DEXRON®II transmission fluid.

For fluid recommendations for the K30/35 transfer cases refer to the owner's manual. LEVEL CHECKS


Fig. Model 208 Transfer Case

Check the four wheel drive transfer case lubricant level every 4 months or 6,000 miles.

1. With the truck parked on a level surface and the parking brake firmly applied, remove the filler plug from the rear of the transfer case (behind the transmission). Be careful not to take out the drain plug at the bottom.
2. If lubricant trickles out, there is enough. If not, carefully insert a finger and check that the level is up to the edge of the hole, EXCEPT in full time four wheel drive cases should be 1 /2 in. below the hole.

Lubricant may be added, if necessary, with a funnel and tube, or a squeeze bulb.



DRAIN AND REFILL
Part Time Systems
No intervals are specified for changing transfer case lubricant, but it is a good idea for trucks that are worked hard or driven in deep water.

1. With the transfer case warmed up, park on a level surface and apply the parking brake.
2. Slide a pan of a least 6 pts. capacity under the case drain plug.
3. Remove the filler plug from the rear of the transfer case (behind the transmission). Remove the drain plug from the bottom.
4. Wipe the area clean and replace the drain plug.
5. Add lubricant with a suction gun or squeeze bulb. Conventional transfer cases require SAE 80W-90 GL-5 Gear Lubricant.
6. When the lubricant level is up to the bottom of the filler hole, replace the plug.

Full Time Four Wheel Drive
The full time system requires oil changes at regular intervals, according to the amount and type of work done by the unit. Trucks used for normal on-off road work should have the transfer case oil changed at 24,000 mile intervals. When used for heavy duty work, trailer towing, snowplowing, and the like, the interval should be halved to 12,000 miles. If the truck is exposed to extremely dusty or muddy conditions, the oil should be changed at 1,000 mile intervals.
The transfer case oil must be hot before changing. Drive the truck until the engine has reached normal operating temperature, and park on a level surface.

1. Slide a pan of at least 8 pts. capacity under the case drain plug.
2. Remove the filler plug.
3. Remove the lowest bolt from the front output shaft rear bearing retainer cover, and allow the lubricant to drain. Be careful; the oil will be hot. There may be a drain plug. If so, remove that instead.
4. Remove the six bolts on the left (driver's) side of the case which secure to P.T.O. (power take-off) cover. Remove this cover and allow the lubricant to drain out.
5. Remove the speedometer driven gear from the upper left rear corner of the case.
6. Use a suction gun to remove as much lubricant as possible from the case cover location and the speedometer gear location.
7. Install the speedometer driven gear, the P.T.O. cover, and the lowest bolt or drain plug.
8. Add approximately seven pints of oil through the filler plug opening. The proper oil to use is 10W-30 or 10W-40 engine oil.
9. Check the fluid level and add sufficient oil to raise the level to 1 /2 in. below the filler plug opening. Replace the plug, and wipe the surfaces of the case and skid plate to remove any excess oil. Drive the truck and check for leaks.

I really hope help ypou woth this (remember rated this help) Good luck.

no, DO NOT use gear oil. The transfer case uses the same type of automatic transmission fluid that the transmission uses. Is the display saying "service 4x4 switch"? If so it is common and the 4WD indicator light switch is bad and needs replaced. It's only purpose is to tell the driver info center what 4 wheel drive mode the transfer case is in. This switch will not affect the function of the 4 wheel drive. The correct fluid for the transfer case is +4 automatic transmission fluid.

You didn't say what year or model transfer case you have, but if you are losing fluid from the top of the transfer case, then you have a leak. Changing the type of fluid won't fix it. Find and repair the leak. As for the type of fluid you need, if ATF came out of it then ATF goes back into it. You do not need the blue stuff unless it is all-wheel drive, and the last time I checked 1500 series trucks were not AWD (All-Wheel Drive).

Hi there.A auto parts store or a dealership service department can help you determine the type of fluid recommended for your vehicle.The fill area is also the full mark,when adding fluid to the transmission or transfercase the fluid will come out of the fill hole and thats when you will know it is full.Its hard to tell how much fluid is is needed, every vehicle is different,but I believe the transfercase is between 2-3 quarts and the standard tranny is between 4-5 quarts.Keep your receipt and whatever fluids you do not use you can return.Hope this helps.John.