Buick Regal 2018-2026 Service Manual / HVAC & Restraints / Heating, Ventilation, and Air Conditioning / Repair Instructions
Buick Regal: Repair Instructions
- Odor Correction
- Refrigerant Recovery and Recharging (R-1234yf)
- Flushing
- Air Conditioning Compressor Oil Balancing
- Air Conditioning System Seal Replacement
- Air Conditioning Evaporator Tube Replacement (LTG)
- Receiver and Dehydrator Replacement
- Heater and Air Conditioning Evaporator Case Replacement
- Air Conditioning Evaporator Replacement
- Floor Front Air Outlet Duct Replacement - Right Side
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Odor Correction
Eliminating Air Conditioning (A/C) Odor
Odors may be emitted from the heat and air conditioning system primarily at
start up in hot, humid climates.
When the blower motor fan is turned on, an unplea
Refrigerant Recovery and Recharging (R-1234yf)
Special Tools
GE-45037 A/C Oil Injector
GE-50078 Electronic Leak Detector
GE-50300 R-1234yf Air Conditioning Refrigerant Recovery/Recharge Cart
GE-50744 A/C R-1234yf PAG Oil Injector Hose
GE-507
Flushing
Tools Required
GE-45268 Air Conditioning Flushing Adapter Kit
GE-41447-a Leak Detection Dye
GE-50078 Electronic Leak Detector
GE-50300 Air Conditioning Service Center for HFO1234-yf
General Info
SEE MORE:
DTC B3435 or B3440
Diagnostic Instructions
Perform the Diagnostic System Check - Vehicle prior to using this
diagnostic procedure.
Review Strategy Based Diagnosis for an overview of the diagnostic
approach.
Diagnostic Procedure Instructions provides an overview of each
diagnostic category.
DTC Descriptor
DT
Windshield Wiper/Washer
With the ignition on or in ACC/
ACCESSORY, move the windshield
wiper lever to select the wiper
speed.
HI : Use for fast wipes.
LO : Use for slow wipes.
INT : Use for intermittent wipes. To
adjust wipe frequency, turn the band
up for more frequent wipes or down
for less frequent wipes.
OFF : Use
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