Shift solenoids or 3/4 clutch
I have been using this forum for a while with great success so thanks to all but now I have a question.
My 2005 Trailblazer ext with 158k miles has a transmission problem. Reverse is good and it takes off as usual through 1st and 2nd then when it should go into 3rd it just revs, if I let it get to around 4K and back off the throttle it goes into 3rd but never into 4th. Would it be the shift solenoids (which I could probably change myself) or bad 3/4 clutch (which I would take into a shop to be rebuilt). If it needs to be rebuilt how long can I continue to drive it while I get the money together to get it rebuilt (I am currently only using it around town where I don’t need to go into 4th - I have probably done 300 miles like this already and what will be the next sign(if any) that total transmission breakdown is imminent?