Vehicle cooling, heating and air conditioning Chevy Trailblazer 1

General information
All models described use a closed cooling system, in which the circulation of liquid is regulated by a thermostat. The liquid is drawn from the radiator into...

Antifreeze — general information
Warning: Do not allow antifreeze to come into contact with your skin or painted surfaces of your vehicle. If antifreeze gets in, rinse with running water....

Thermostat — Checking Performance and Replacement
Note: The thermostat is an integral part of the housing. Checking functionality 1. Before deciding that the thermostat is faulty, check the coolant level,...

Cooling system fan and its clutch — checking the functionality
Warning: Keep hands, tools and clothing away from fan blades. To avoid injury, do not start the engine with a damaged fan. Do not attempt to repair a damaged...

Cooling system fan, its coupling and casing — removal and installation
Warning: Wait until the engine has cooled down completely before proceeding with this procedure. Note: During this procedure, you must use a special fan clutch...

Radiator — removal and installation
Warning 1: The air conditioning system is under high pressure. Do not loosen the couplings or remove components without first discharging the system when...

Coolant pump — checking performance and replacement
Warning: Wait until the engine has cooled down completely before proceeding with this procedure. Checking functionality 1. A faulty coolant pump can cause the...

Coolant Temperature Sensor — Checking Functionality and Replacement
1. The coolant temperature control system consists of an indicator (or emergency lamp), which is located on the instrument panel, and a sensor installed on the...

Heater fan and its electrical circuit — checking the functionality
Warning: The models described are equipped with air bags. Before performing procedures in the area where the passive restraint components are located, it is...

Heater Fan — Removal and Installation
Warning: The models described are equipped with air bags. Before performing procedures in the area where the passive restraint components are located, it is...

Control panel for heating and air conditioning systems — removal and installation
Warning: The models described are equipped with air bags. Before performing procedures in the area where the passive restraint components are located, it is...

Heater — removal and installation
Warning 1: The vehicles described in this manual are equipped with a Supplemental Restraint System (SRS), also known as an air bag system. Before carrying out...

Air conditioning and heating systems — performance testing and maintenance
Warning: The air conditioning system is under high pressure. Do not loosen the couplings or remove components without first discharging the system when...

Air Conditioning Accumulator/Dryer — Removal and Installation
Removal Warning: The air conditioning system is under high pressure. Do not loosen the couplings or remove components without first discharging the system when...

Air conditioning compressor — removal and installation
Removal Warning: The air conditioning system is under high pressure. Do not loosen the couplings or remove components without first discharging the system when...

Air conditioning condenser — removal and installation
Warning: The air conditioning system is under high pressure. Do not loosen the couplings or remove components without first discharging the system when...

Evaporator — replacement
Warning 1: Before proceeding with this procedure, wait until the engine has cooled down completely. Warning 2: The air conditioning system is under high...

Air conditioning expansion tube — removal and installation
Warning 1: The air conditioning system is under high pressure. Do not loosen the couplings or remove components without first discharging the system when...

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