My new climbing rose is dying on me.....

Any chance of a pic or two? We can`t advise on the information supplied. If you can`t supply an image can you please give more details on what is happening to the plant, what conditions it was planted in and what treatment/feed it`s been given.

When you planted it, did you disturb the roots at all? If you did, this is part of the problem - roses really do hate root disturbance. There's a big difference between potted roses and bare-root ones.

If not, then there are other problems and without a pic, it's hard to tell. But at a guess, I'd suggest you cut the main stem back to green growth, give it a watering with just a bit of transplanting fertilizer if you have any, and leave it in a partly shaded spot to recover. Full sun right now is just too stressful. Also, have a very close look everywhere for any signs of disease or pest. You might not find anything but best to be sure.