I have a 2001 Chevy blazer. I change my transmission filter and put in new fluid to top off. Now the car starts off in second gear and won't down shift into first manually or automatically. What would cause the problem? It was perfect befor filter change.
If it was changing before fluid and filter change the new filter is not seated in correctly or did not remove old filter gasket before installing new filter and it is sucking in air.
answer 1 sounds correct
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