Transmission won't go in reverse.
I'll agree with Bewy 100% on this. Due to the stronger Low/Reverse Servo Piston Return Spring supplied with the TransGo reprogramming kit & the increased internal apply pressures after installation of the reprogramming kit, I always use a billet aluminium Rear Servo Spring Retainer.
The photo below shows what can happen if the stock spring retainer is used. When this happens, Reverse gear leaves the building!
Billet aluminium retainers are available from A&A Transmissions for 30 Bucks Part Number AA296AR
I'll agree with Bewy 100% on this. Due to the stronger Low/Reverse Servo Piston Return Spring supplied with the TransGo reprogramming kit & the increased internal apply pressures after installation of the reprogramming kit, I always use a billet aluminium Rear Servo Spring Retainer.
The photo below shows what can happen if the stock spring retainer is used. When this happens, Reverse gear leaves the building!
Billet aluminium retainers are available from A&A Transmissions for 30 Bucks Part Number AA296AR