It's the dealer scan tool, DRBIII. There are some aftermarket scan tools that work on body system. What year and what are your problems?

 

Need help guys! Very minimal amount of heat coming out of my system(almost none). I have topped up coolant, replaced thermostat, and checked lines leading to and coming from heating core and both are hot at operating heat level. The blower motor is working right as well as the designated direction for air flow in cabin. What am I missing as to why no heat is coming out? Current temp is -18 C and cannot take my kids anywhere like this, let alone the fact that I work all midnight freezing cold to drive shift work...lol. Please help someone?

 

What year? Front and rear system? Auto temp?