My trans I think

[Jason peita]

Hi my 2004 by a series 2 is now only driving in 1st and second gear,soon as it hits 2000rpm it slips and wont go into 3 4 gears etc.before this...if I was driving and put my foot down it would just rev in 2 and not change up gears,help I need my car,

 

[ant797]

Shift solenoid maybe https://www.ebay.com.au/itm/202679686220

 

[Utel67]

3-4 clutches are smoked, either leaking between input shaft and drum or worn out 3-4 piston.

 

[TheIceman]

was just gonna say, that moulded pistons is probably hardened and stuffed causing loss of pressure to the 3-4 pack and burnt them out, tranny rebuild coming up.

 

[Trevor loves holden.]

Could be anything, low fluid, blocked filter, TPS, sun shell broken, torque converter, shift solenoid, worn valve body.