On the P0113:
The IAT sensor is integrated into the Mass Air Flow sensor. Start looking at the connector for any backed out wires/terminals, corrosion with a light green color, broken wires. The ECM is seeing -38 degrees F for 15 seconds or more (exact details depend on which engine & what year) with the engine running & throwing the code. Since the IAT is part of the MAF it's supposed to warm up gradually as the heating elements in the MAF do. Make sure that there are 5 volts into the IAT and check that the circuit ground is also good. Just a starting point and it's easy enough to check, assuming you know how to do this. If not, then I suggest you head to your auto repair shop or dealer. There are pictures & a how-to-replace in the Chiltons G6 book if you want to DIY but you may throw a part at it only to find it was actually a wiring issue.
The C0561 indirectly resulted from the first code & will be resolved when you fix that one. The electronic brake control module disables traction control when other control modules set codes for components that effect the operation of the traction control system. The EBCM throws the C0561 to tell you that the problem is not in the ABS/Traction control system itself.
Last edited by greenman; 10-19-2011 at 10:54 PM.