Going strong at 256K

[ColoradoSilverado]

Truck: Silverado 1/2 ton
Year: 2000
Engine: 5.3, Original, no rebuild
Transmission: Original, no rebuild
Mileage: 256,657 miles
Load: (today about 3000 lbs!)
Usage: Everyday contracting

[j cAT]

Originally Posted by ColoradoSilverado

Truck: Silverado 1/2 ton
Year: 2000
Engine: 5.3, Original, no rebuild
Transmission: Original, no rebuild
Mileage: 256,657 miles
Load: (today about 3000 lbs!)
Usage: Everyday contracting

thought your getting that new truck ? ford ? toyota ?

[ColoradoSilverado]

Originally Posted by j cAT

thought your getting that new truck ? ford ? toyota ?

Yes, I am in a couple of months. Thinking about it though, might get a Chevy or Sierra again as I know how reliable they will be with the right maintenance. Been scouring auto trader.com a lot and have a question: Which models have the flow-thru center console?, I really like the look of those interiors,

[ColoradoSilverado]

Well, I finally did the transmission pan drop and filter exchange and added 5 Qt's of new fluid. Of course the drain plug was a no go so oil all over the place..... Also did the engine oil/filter after putting in some seafoam a week ago, drained out a lot of gunk so that's a good thing. Transmission fluid was pretty bad so I'm wondering if I should exchange all of it now, if I can somehow get the drain plug loosened I could just fill new fluid while draining the old right? Another good thing was that there was absolutely nothing on the magnet in the transmission pan.

[j cAT]

Originally Posted by ColoradoSilverado

Well, I finally did the transmission pan drop and filter exchange and added 5 Qt's of new fluid. Of course the drain plug was a no go so oil all over the place..... Also did the engine oil/filter after putting in some seafoam a week ago, drained out a lot of gunk so that's a good thing. Transmission fluid was pretty bad so I'm wondering if I should exchange all of it now, if I can somehow get the drain plug loosened I could just fill new fluid while draining the old right? Another good thing was that there was absolutely nothing on the magnet in the transmission pan.

to remove the drain plug you must first have a 6 point socket with NO tapered edge . then you remove the pan and secure on a piece of plywood etc .. secure the pan with a clamp so it will not move .. then you heat up the drain plug with a torch until you see the plug glow slightly red . the you quickly apply torque to unscrew this plug. MAKE SURE YOU USE GOGGLES TO PROTECT EYES !

GM used permanent lock tight . this is why .

when installing the plug I used a small amount of thread sealant for machined threads.

when I did this ,,,, when the plug broke loose the lock tight exploded out ward !

[ColoradoSilverado]

Thanks jCat, not sure if I want to remove the pan again..... I'll see if I can find a good socket and will try to get the plug out while the pan is still attached. What will be the best way to replace all the fluid? Let it run for a while to cycle all the fluid through the tranny and cooler then drain some and add some and repeat this a couple of times?

[j cAT]

Originally Posted by ColoradoSilverado

Thanks jCat, not sure if I want to remove the pan again..... I'll see if I can find a good socket and will try to get the plug out while the pan is still attached. What will be the best way to replace all the fluid? Let it run for a while to cycle all the fluid through the tranny and cooler then drain some and add some and repeat this a couple of times?

fluid replacing best method would be idling the engine in park you connect the tranny cooler line into a clear plastic gallon jug. you mark off 1 qt amount marks . as the fluid comes out you pour in the same amount . when 10 qts are exchanged 2 gallons then it is fully purged of the old stuff..

it comes out slowly at idle very little pressure .