GM 15299606
Heater Control

Start by disconnecting the battery then remove the i/p accessory trim plate before unfastening the HVAC Control Module retaining screws to extract the component. Install the HVAC Control Module onto the i/p trim plate according to the fastener notice then secure the module with retaining screws tight to 1.6 n.m (14 lb in). Start by connecting electric cables to the hvac control unit then install the i/p accessory assembly before restoring power to the system. Adjustments of HVAC Control Module controls during self-calibration should always stay unchanged because improper system performance might result. Engine operation needs to continue for a minimum of one minute for the calibration process to finish successfully.

To remove the HVAC Control Module, first, turn the battery off, then thoroughly remove the i/p accessory trim plate, and remove the retaining screws from the HVAC Control Module before making the actual withdrawal of the module. For mounting, mount the HVAC Control Module onto the i/p trim plate and fasten using the retaining screws that should be tightened to 1.6n.m (14 lb in). Then, connect the electrical connectors into the HVAC Control Module and replace the i/p accessory trim plate. Reconnect the battery and then turn the engine on and let it run for at least a minute. It is essential not to change any controls on the HVAC Control Module while self-calibrating, as an interruption can result in an incorrect hvac operation; do not test the engine while running so that calibration is achieved.