HI there, could use some help a tranny problem that I have,
1-I've just rebuilt my 1975 C4 Pan Fill transmission (new seals, clutch packs, steels and vacuum modulator) and it won't up shift from 1st. (In "P" is fine, "N" is fine, "R" is fine, "D" won't shift up from first, "1" is fine, and "2" is first gear only.)
2-Is there a way to preset the vac. mod. before putting it in, or do they come preset?
3-Like a dipstick I've lost the dipstick (don't ask how but it was dumb) But how far up the fill tube would be in the right range for the fluid level, going from the bottom of the case where the pan and case meet ?