jf-schaack
10-15-2007, 19:25
Hey guys,
I searched for about half an hour to find some answers but didn't find what I was looking for. I just bought a 1982 Chevy K20 w/ a 6.2L and what I believe I've determined to be a th400 (stock auto tranny w/out OD). My questions are as follows:
1. How do I change the tranny filter? Sounds basic but I've never kept a vehicle long enough to do it or had a shop take care of it. When I got the truck it was very, very low on fluid so it has had a fair amount of new put in. I'm afraid to do a full tranny drain because of the cleaning effect of new fluid on an old tranny, worried I may have a problem (happened in the past). I just want to change out the filter. From what I understand the filter is attached to the tranny pan or directly above it? What can i expect when i drop the pan? Anything special to look for? What do I torque tranny pan bolts to when re-installing (with new gasket of course)?
2. My second question involves downshifting. I noticed when I drove the truck today that I had to either manually downshift or put the pedal to the floor and wait for a little bit to maybe get the tranny to downshift. Is downshifting controlled by vaccum or other means? What should I be checking? If it is vaccum what is the best way to check the pump and how much vaccum pressure should I have?
Thanks for the help all.
James
I searched for about half an hour to find some answers but didn't find what I was looking for. I just bought a 1982 Chevy K20 w/ a 6.2L and what I believe I've determined to be a th400 (stock auto tranny w/out OD). My questions are as follows:
1. How do I change the tranny filter? Sounds basic but I've never kept a vehicle long enough to do it or had a shop take care of it. When I got the truck it was very, very low on fluid so it has had a fair amount of new put in. I'm afraid to do a full tranny drain because of the cleaning effect of new fluid on an old tranny, worried I may have a problem (happened in the past). I just want to change out the filter. From what I understand the filter is attached to the tranny pan or directly above it? What can i expect when i drop the pan? Anything special to look for? What do I torque tranny pan bolts to when re-installing (with new gasket of course)?
2. My second question involves downshifting. I noticed when I drove the truck today that I had to either manually downshift or put the pedal to the floor and wait for a little bit to maybe get the tranny to downshift. Is downshifting controlled by vaccum or other means? What should I be checking? If it is vaccum what is the best way to check the pump and how much vaccum pressure should I have?
Thanks for the help all.
James