The Blower And Heater Controls And The A/C System Do Not Work (Without Climate Control)

The blower and heater controls and the A/C system do not work

Probable cause: The HVAC control unit has malfunctioned, or has lost power or ground.

Do the HVAC control power, ground, and communication circuit troubleshooting HVAC Control Power, Ground, And Communication Circuit Troubleshooting

Also check for

HVAC DTCs How To Troubleshoot The Heating And A/C Systems

Also check for

Blown fuse No. 36 (10 A) in the under-dash fuse/relay box

Also check for

Poor ground at G403

Also check for

Poor or loose connections at the terminals