I've seen broken springs under the retainer cap cause this. You don't have to drop the tranny. Just take the shifter out. Take the plastic interior piece off, unbolt the boot. Pull the boot boot off and push down on the retainer cap and turn it counter-clock wise, I think......... pull the shifter out. There is a spring behind the retainer cap, make sure its not broken. The shifter sheet is a black plastic piece that will be down in the hole you took the shifter out of. If you need parts let me know. I should have what you need.....Chris