my car is 2006 Dodge Ram 3500, 5.9L 6 Cylinder Diesel Turbo, My a/c and heat is totally messed up - the heat and cooling works properly but the a/c does not blow hard at all (tho I can hear it blowing inside the dash somewhere) - then no matter where the **** is for heat it always blows out the defrost (none on feet) - I have already spent around $1,000.00 and it's still not fixed - the blend air door has been replaced 2 times - any other suggestions.
if i want to fix it by myself does the tool CAT ET can help me?

 

is there anyone can help me?

 

i have solve it with the tool that from xcardiag.com