I apologise for all the threads/questions, but this may be my last for a while...
I cant figure out why I couldnt get a gear and move the sierra now... it is always like its in neutral!

All driveshafts on.
I put it on the pit this afternoon, with the car in gear, parkbrake off, and pushed from underneath... I could hear a scraping noise in the front of the gearbox which I could recognise as a slipping clutch...
I used the sierra flywheel, clutch plate etc, but no go...
It is a real pain having to lift out the engine/gearbox just to check the clutch..., so if anyone can diagnose the problem before I have to do this....that would be tops

Thanks again,
Martin