Cold Drafts On Floor; Odor Diagnosis - GMC chevrolet camaro 2000 Service Manual

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HVAC
Heating, Ventilation and Air Conditioning 1-27
Noise Diagnosis - A/C System (cont'd)
Step Action Value(s)
Yes No
Is th!,! vibration/rattle coming from the A/C compressor
Go to Engine
.internally?
Related Vibration
29
-
in Vibration
Diagnosis and
Go to Step 12
Correction
1. Turn OFF the ignition switch.
2. Reconnect or install any connectors or components
Go to A
30
which were disconnected or removed.
-
Diagnostic
System Check in
3. Recheck for the presence of the A/C system noise.
HVAC Systems -
Is the A/C system noise still present? Go to Step 2
Manual
t.
Evacuate and charge the refrigerant system.
31
2. Leak test the refrigerant system.
-
-
Refer to Leak Testing.
Are the actions completed?
Go to Step 32
Recheck for the presence of the A/C system noise.
Go to A
Is the A/C system noise still present?
Diagnostic
32
-
System Check in
HV AC Systems -
Go to Step 2
Manual
Cold Drafts on Floor
2. Inspect all of the side door seals for the following
conditions. Repair or replace faulty seals as
necessary.
1. Inspect for a partially open air inlet valve.
Ensure that the air inlet valve closes properly in all
modes except the MAX air conditioning mode.
Perform repairs as necessary.
.. Damaged seals
• Missing seals
Odor Diagnosis
'
Problem
Possible Cause Correction
O
Locate and repair any water leaks.
• Water leaks (body)
Refer to the appropriate repair
Musty Smell
• The evaporator drain is blocked.
procedure in Water Leaks.
• There is mold or mildew on the
• Clean the evaporator drain.
evaporator core.
~
Clean the evaporator. Refer to Odor
Correction.
• Replace the heater core. Refer to
Heater Core Replacement.
• The heater core is leaking.
• Replace the heater core pipes or
Coolant Smell
• The heater core pipes or hoses are hoses. Refer to Heater Hose
leaking. Assembly Replacement {3.8 L) or
Heater Hose Assembly
Replacement (5. 7 L).
Refrigerant Oil Smell
The evaporator core is leaking.
Replace the evaporator core. Refer to
'
Evaporator Core Replacement.
Mold/mildew odor problem-Under certain climate and operating conditions a musty odor can develop. The odor is caused
by a microbial growth in the evaporator core. This odor is generally temporary, and as climate conditions change, the odor
will disappear. Should the odor persist it may become necessary to clean the evaporator core with an appropriate cleaner.