Ive never heard a transmission click. I'd check your engine oil and transmission fluid. Be sure it's HOT when you check the transmission fluid as that is when it would be at it's lowest.

Also, if you've never done it - change the transmission fluid and filter. It takes about one hour to do, and is well worth it.

I hope its NOT your timing chain guides...

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740iLDUKE
01' DINAN 7 S62 Swap - Stratus Grau
(1587 produced in SG 440)
02' 4.6is DINAN X5 S2 Supercharged
833/3258 produced | 1/27 Dinan X5's