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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 1358 (HVAC Systems - Manual) >> Diagnostic Information and Procedures >> Air Delivery Improper

Air Delivery Improper

WARNING: This page is about a different car, the 2004 Pontiac Vibe. However, it is still accessible from the selected car via links, so may be relevant.
Air Delivery Improper

Step Action Yes No
Schematic Reference: HVAC Schematics 
DEFINITION: Air does not flow correctly from the air distribution outlets.
1 Did you read Air Delivery Description and Operation? Go to Step 2  Go to Air Delivery Description and Operation 
2
  1. Start the engine.
  2. Place the mode switch in the OFF position.
Is the blower motor OFF?
Go to Step 3  Go to Blower Motor Always On 
3
  1. Place the mode switch in the vent position.
  2. Place the blower motor switch in each speed position.
Does the blower motor operate in any of the speed positions?
Go to Step 4  Go to Blower Motor Inoperative 
4 Does the blower motor operate at the desired speed? Go to Testing for Intermittent Conditions and Poor Connections in Wiring Systems Go to Blower Motor Malfunction