What would cause the transmission to indicate fluid over fill & blow out vent when the proper amount of fluid was put in (& even after draining a quart after that?
2001 GMCz71 w/ 207,000 miles, well cared for.
mech tells me my xfer case has a little leak, cleaned it up & we were going to watch it.
700 interstate miles later, undercarriage coated. Took it to dealer garage. They say:
Blowing xmsn fluid out the vent tube. Did a xmsn flush; during flush they said they kept
having trouble, as if they were running into pockets of air. Got it flushed & filled. They ran
it & said: still blowing out vent tube & it showed over- full. They drained a qt out & same
thing - fluid level showing overfill & blowing out vent tube. (No loss of radiator fluid
level)What would cause this?