Draining coolant How do I drain the cooling fluid for periodic maintenance?

Doesn't have a bleeder valve .
Filling Procedure
Notice: The procedure below must be followed. Improper coolant level could result in a low or high coolant level condition, causing engine damage.
Close the radiator drain **** by hand.
Notice: Refer to Fastener Notice in the Preface section.
Install the water pump drain plug (1) if removed during the draining process.
Tighten
Tighten the plug to 22 N·m (16 lb in).
Lower the vehicle.
Important: Use a 50/50 mixture of DEX-COOL antifreeze and clean, drinkable water. It is necessary to maintain the coolant level near the cold fill line on the surge tank to insure all the air has been purged from the cooling system.
Slowly add a mixture of 50/50 DEX-COOL antifreeze and deionized water to the cooling system until the coolant level reaches and maintains slightly above the cold fill line on the surge tank. Refer to Approximate Fluid Capacities.
Install surge tank cap.
Start the engine.
Run the engine at 2,000-2,500 RPM for 3 minutes.
Allow the engine to idle for 30 seconds.
Shut the engine off.
Top off the coolant as necessary.
Inspect the cooling system for leaks.
Rinse away any excess coolant from the engine and the engine compartment.

if you have a leak inside it may be a heater core problem which can cause all your problems. check it by doing a pressure test on the cooling system.

1: Drain coolant system
2: Purchase coolant flush, making sure you have the proper amount for your size of coolant system
3: Pour coolant flush into your radiator, filling the rest with water
4: On the coolant flush bottle it will tell you how long to run your vehicle
5: Once done running, let cool enough to open radiator cap, and drain system COMPLETELY by first draining out of pep **** on radiator, then taking one side of the hoses off the radiator and draining those
6: Put hoses back on and fill system with coolant. When the fluid gets to the top of the fill port on radiator, start vehicle and let run, allowing air to escape the system, and fill as necessary

There might be a problem with the thermostat not allowing, or restricting the flow of coolant. Or your radiator might be full of deposits(deposits are caused over time by the insides breaking down, ie:metal) a radiator flush might be all you need. Some places offer this for fairly cheap, round $40. Some places charge alot because they can not recycle the coolant. Inquire with your local auto-parts store and see if they have any other recomendations? Advice is almost always free, and most of them can point you in the right direction of who might be the cheapest for good quality work in your area.

Basically, a radiator flush involves draining your old fluid. Putting in new fluid, running for a bit. Draining again, then filling with new fluid! That's about it.

The deposits in your radiator are blocking the holes for the coolant to flow through, thus there is less coolant flowing through the radiator to cool off before it goes to the motor to cool it off!

I hope this helps, and hope this is all your problem is! Good luck!

The only thing I can think of that would cause this is if the antifreeze is old or weak or diluted down with too much water. Try the following: DRAIN & REFILL Fig. 1: Remove and drain the reservoir recovery tank
Fig. 2: Location of the radiator draincock
Fig. 3: Use your hand to unscrew the plastic draincock
Fig. 4: To refill the recovery tank, twist the cap . . .
Fig. 5: . . . then pull up to remove it from the tank
Fig. 6: Adding coolant to the reservoir bottle
Fig. 7: Always check the condition of the radiator cap gasket and seal. Place a light coating of coolant on the seal and gasket when installing
CAUTION
When draining the coolant, keep in mind that small animals and domestic pets are attracted by ethylene glycol antifreeze and may attempt to drink any that is left in an uncovered container or from puddles on the ground. This can be fatal if ingested in sufficient quantity. Always drain the coolant into a sealable container. Coolant should be reused until it becomes contaminated or several years old. To avoid injuries from scalding fluid and steam, DO NOT remove the radiator cap while the engine is running or if the engine or radiator is still hot.

1. Before draining the cooling system, place the heater's temperature selector to the full WARM position while the engine is running.
2. Turn the engine off before it gets hot and the system builds pressure.
3. Make sure the engine is still cool and the vehicle is parked on a level surface.
4. Remove and drain the reservoir recovery tank.
5. Place a fluid catch pan under the radiator. Turn the radiator draincock counterclockwise to open, then allow the coolant to drain.
6. Remove the radiator cap by performing the following:
   1. Slowly rotate the cap counterclockwise to the detent.
   2. If any residual pressure is present, WAIT until the hissing stops.
   3. After the hissing noise has ceased, press down on the cap and continue rotating it counterclockwise to remove it.
7. Allow the coolant to drain completely from the vehicle.
8. Close the radiator draincock. NOTE: When filling the cooling system, be careful not to spill any coolant on the drive belts or alternator. To refill:
   
9. Make sure the heater temperature is placed in the full hot position.
10. Open the bleed screw on the thermostat housing.
11. Install the reservoir recovery tank and using a 50/50 mixture of the recommended antifreeze and clean water, fill the cooling system reservoir tank to the FULL mark. WARNING
    If any coolant is spilled on a painted surface, wipe it up immediately.
    
12. Begin filling the radiator with the 50/50 mixture of coolant. Watch for air being released from the open the bleed screw on the thermostat housing. Once coolant mixture begins to steadily flow through the bleeder, close the bleeder.
13. Continue to fill the radiator until the radiator is full.
14. Start the engine and allow the engine to run until the cooling fans operate two times, making sure to top off the system as the fluid level drops.
15. After the cooling fan has run for the second time, top off the system as necessary, then install the radiator cap.
16. Allow the engine to run and inspect the cooling system for leaks.

let me know if you have more questions The thermostat is located in the engine block just to the side of the water pump underneath the housing where the upper radiator hose is attached.

1. Remove the lower engine shield.
2. Place a large drain pan under the vehicle to collect the coolant.
3. Remove the radiator cap and drain the cooling system into a suitable container.
4. Place a large drain pan under the engine block drain located at the bottom of the engine near the vicinity of the flywheel and the oil pan.
5. Drain the engine block coolant into a suitable container.
6. Place the (hood) lock carrier in the 'service position'. For additional information, please refer to the following topic(s): Body And Trim, Service Position, Front Bumper, Hood Lock Carrier.
7. Remove the accessory drive belt. For additional information, please refer to the following topic(s): General Information And Maintenance, Routing Maintenance And Tune-Up.
8. If installed, remove the upper front engine cover.
9. Remove the toothed camshaft drive belt from the right side cylinder head to allow enough access to remove the thermostat housing. Cover and protect the drive belt from residual coolant.
10. Remove the mounting fasteners; remove the housing, then the thermostat.
    

Fig. An exploded view of the water pump, thermostat housing and thermostat-2.8L V6 engines

Fig. Lubricate the O-ring with coolant and make sure the thermostat is installed with the bleeder facing up-2.8L V6 engines

To install:
WARNING The thermostat vent valve must be installed facing up otherwise the cooling system may develop air pockets and allow the engine to overheat.

1. Using new O-ring, install the thermostat making sure the vent valve is installed facing up.
2. Install the thermostat housing and torque the housing the bolts to 88 inch lbs. (10 Nm).
3. Inspect the camshaft drive belt for wear and damage and replace if necessary. If contaminated with fluids or lubricants, it should be replaced. For additional information, please refer to the following topic(s): General Information And Maintenance, Routine Maintenance And Tune-Up, Engine And Engine Overhaul, Timing Belt And Sprockets.
4. Installation is in reverse order of removal noting the following:
5. Top off cooling system with the recommended fluid and concentration. For additional information, please refer to the following topic(s): General Information And Maintenance, Fluids And Lubricants.

don't worry about the block drains. just flush through the radiator opening. Replace with 50/mix of anti freeze and DISTILLED water

Should be a drain **** at the bottom of the radiator that unscrews out. It looks like a wing nut has been welded to a bolt on the end of it. Another way to do this is just pull off the bottom hose.

I completely understand. Here's where you can find the thermostat location:
2.8L V6 Engines

The thermostat is located in the engine block just to the side of the water pump underneath the housing where the upper radiator hose is attached.

1. Remove the lower engine shield.
2. Place a large drain pan under the vehicle to collect the coolant.
3. Remove the radiator cap and drain the cooling system into a suitable container.
4. Place a large drain pan under the engine block drain located at the bottom of the engine near the vicinity of the flywheel and the oil pan.
5. Drain the engine block coolant into a suitable container.
6. Place the (hood) lock carrier in the "service position". For additional information, please refer to the following topic(s): Body And Trim, Service Position, Front Bumper, Hood Lock Carrier.
7. Remove the accessory drive belt. For additional information, please refer to the following topic(s): General Information And Maintenance, Routing Maintenance And Tune-Up.
8. If installed, remove the upper front engine cover.
9. Remove the toothed camshaft drive belt from the right side cylinder head to allow enough access to remove the thermostat housing. Cover and protect the drive belt from residual coolant.
10. Remove the mounting fasteners; remove the housing, then the thermostat.

WARNING: The thermostat vent valve must be installed facing up otherwise the cooling system may develop air pockets and allow the engine to overheat.

1. Using new O-ring, install the thermostat making sure the vent valve is installed facing up.
2. Install the thermostat housing and torque the housing the bolts to 88 inch lbs. (10 Nm).
3. Inspect the camshaft drive belt for wear and damage and replace if necessary. If contaminated with fluids or lubricants, it should be replaced. For additional information, please refer to the following topic(s): General Information And Maintenance, Routine Maintenance And Tune-Up, Engine And Engine Overhaul, Timing Belt And Sprockets.
4. Installation is in reverse order of removal noting the following: Top off cooling system with the recommended fluid and concentration. For additional information, please refer to the following topic(s): General Information And Maintenance, Fluids And Lubricants.

Post your email address and I'll send you a couple of exploded diagrams. Have fun.

its a pitcock facing the cab bottom of the radiator, plastic flat. once you find the pitcock just put a bucket underneath and turn it.then refill. if you want to flush(run fluid thru to clean it out) the radiator id suggest taking it in. you dont have to flush it every time you change the coolant out.