Chevrolet Repair Questions? Ask a Mechanic for Answers ASAP
Is it auto or manual A/C?
OK. Disconnect your blower control processor (yep, you guessed it; new name for the resistor). Turn the ignition off and wait a few seconds. Try retrieving the codes again, if HVAC controls light up and U1152 is now gone, replace the resist... excuse me, the blower control processor. Also, check the blower motor for any signs of binding or overheating that may have caused a chain reaction. If U1152 persists, then there is a chance the HVAC control module itself might have gotten damage.
Let me know what you find.
Forums are probably the biggest distributors of misinformation ever. Being a retired engineer, I would love to see the technical argument for the connection between a broken starter solenoid wire and no communication to the HVAC module so I could tear it to pieces ;-)