Dalana Marie

Hi im new and i need help. I have 02 tahoe ZW7 name big red and she feels like wobbling. I had a wheel alignment done and now its pulling to left i took it back and they said i need 2 back tires and an original rim. But i think i might need shocks too. I dont haul stuff i jus want the wind to stop making the truck wobble. Are there any cost efficient shocks?? I aint got alot money to fix big red