You have an H3 transmission problem, that mean you have to change the whole transmission, what did you think it will cost? Call any mechanic or garage, they will probably ask you for 5 to 8K for labour, parts you order from US yourself, a good H3 or Chevy Auto Transmission will cost you US 1200 to 1500 and how much do you think would cost to deliver this. The major fault is on your part as the owner, you probably did not take care of your Hummer, by using different transmission or cheap oil and also mxing coolant, which caused your radiator to turn faulty and damage your transmission. Don't cheap out, when you own a high end vehicle.
You have an H3 transmission problem, that mean you have to change the whole transmission, what did you think it will cost? Call any mechanic or garage, they will probably ask you for 5 to 8K for labour, parts you order from US yourself, a good H3 or Chevy Auto Transmission will cost you US 1200 to 1500 and how much do you think would cost to deliver this. The major fault is on your part as the owner, you probably did not take care of your Hummer, by using different transmission or cheap oil and also mxing coolant, which caused your radiator to turn faulty and damage your transmission. Don't cheap out, when you own a high end vehicle.