A/C and Heating

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Your vehicle's heating and AC systems (climate control system, for short) have a straightforward job. They simplify managing and maintaining the temperature in your cabin during drives. If you've ever wondered how they work, it's simple.

Heating systems, for instance, work a lot like radiators do. They send hot coolant through a heater core. A fan blows over it; the warm air that results ten flows through a series of ducts, out vents, and into your vehicle's interior.

Air conditioners, on the other hand, work in stages, using several different parts -- namely, an AC compressor, an AC condenser, an expansion valve, and an evaporator. First, liquid refrigerant is transformed into a hot gas. Then, it cools down, back into a liquid. It's then turned into a low-pressure gas. Finally, after further chilling, cold air flows into your cabin.

No car HVAC system lasts indefinitely, however. Luckily, if you think that yours are going out, there are signs you can look for. They are:

  • The sweet, syrup-like smell of coolant in the cabin
  • Steam in the cabin
  • Clogs in either or both systems
  • Worn-out heating and AC parts
  • A system simply not cooling or heating as well as it used to

The causes of heater and air conditioner problems in a car, though, range widely. They include a leaking heater core, leaking refrigerant, and low refrigerant levels. If you're experiencing any of these symptoms, it might be time for a repair or two. Do a thorough HVAC inspection to figure out what's happening.

Fix Your Car Heating and Air Conditioning the Right Way -- Rely on Genuine OEM Parts

Our auto parts store stocks the best for the job: genuine GM. You'll find plenty to choose from right here online; simply browse our catalog by brand, model, and year -- it'll help you find what you're looking for more easily. Buy them now, and we'll ship to your door ASAP -- you'll have the job done before you know it.

AC & Heater Case
Part Number: 84567421
Positions: Front
Other Names: Heater Case, AC & Heater Assembly, HVAC Unit Case, F (S)Case More Names
Description: Front. More Info
Fits:
  • Buick:
    • Enclave
  • Cadillac:
    • XT6
  • Chevrolet:
    • Traverse
  • GMC:
    • Acadia
MSRP $145.02
$90.12
MSRP $145.02
$90.12
AC & Heater Assembly
Part Number: 23369529
Other Names: AC & Heater Case, HVAC Unit Case, HVAC Unit Case Assembly, Case More Names
Replaces: 13351403, 13351411, 23172714, 23388561
Description: Without climate control. More Info
Fits:
  • Buick:
    • LaCrosse
  • Chevrolet:
    • Cruze,
    • Cruze Limited
MSRP $295.30
$183.47
MSRP $295.30
$183.47
AC & Heater Case
Part Number: 23388562
Other Names: AC & Heater Assembly, HVAC Unit Case Assembly, Case More Names
Replaces: 13339074, 13351401
Description: With climate control. More Info
Fits:
  • Buick:
    • LaCrosse,
    • Regal
  • Chevrolet:
    • Malibu,
    • Malibu Limited
MSRP $227.30
$123.88
MSRP $227.30
$123.88
Heater Control
Part Number: 23507153
Positions: Lower
Other Names: Heater & AC Control, Dash Control Unit, F (S)Control More Names
Description: Traverse. Lower & rear components, with rear heated seat. Enclave. Lower & rear components, with heated seats. More Info
Notes: Included with rear panel assembly. More Notes
Fits:
  • Buick:
    • Enclave
  • Chevrolet:
    • Traverse
MSRP $214.61
$116.96
MSRP $214.61
$116.96
Heater & AC Control
Part Number: 84563968
Positions: Rear, Front
Other Names: Heater Control, Control More Names
Replaces: 23283464, 25960280
Description: Express, savana. Front. More Info
Notes: Included with front headliner. More Notes
Fits:
  • Chevrolet:
    • Express 1500,
    • Express 2500,
    • Express 3500
  • GMC:
    • Savana 1500,
    • Savana 2500,
    • Savana 3500
  • 1 more
MSRP $160.70
$87.57
MSRP $160.70
$87.57
Heater & AC Control
Part Number: 15109353
Positions: Rear
Other Names: Heater Control, Control Module, Control More Names
Description: Rear, without entertainment system. Yukon XL, Suburban. Roof console. Tahoe, Yukon. Without audio control. Console components, without... More Info
Notes: Included with console assembly. More Notes
Fits:
  • Buick:
    • Enclave
  • Cadillac:
    • Escalade,
    • Escalade ESV
  • Chevrolet:
    • Suburban 1500,
    • Suburban 2500,
    • Tahoe,
    • Traverse
  • GMC:
    • Yukon,
    • Yukon XL 1500,
    • Yukon XL 2500
  • 5 more
MSRP $291.73
$158.99
MSRP $291.73
$158.99
Heater & AC Control
Part Number: 23467328
Positions: Lower
Other Names: Combo Switch, Heater Control, Control More Names
Replaces: 20929717
Description: Tahoe & Yukon, console base, without rear entertainment, with rear htd seats. Without rear seat heater. Yukon XL. Lower & rear... More Info
Notes: Included with center console. Included with console assembly. Order by description. More Notes
Fits:
  • Buick:
    • Envision
  • Chevrolet:
    • Suburban,
    • Suburban 3500 HD,
    • Tahoe
  • GMC:
    • Acadia,
    • Yukon,
    • Yukon XL
  • 2 more
MSRP $263.81
$143.78
MSRP $263.81
$143.78
Heater & AC Control
Part Number: 23507152
Positions: Lower
Other Names: Heater Control, Dash Control Unit, Control More Names
Description: Traverse. Lower & rear components, without rear heated seat. Enclave. Lower & rear components, without heated seats. More Info
Notes: Included with rear panel assembly. More Notes
Fits:
  • Buick:
    • Enclave
  • Chevrolet:
    • Traverse
MSRP $213.46
$116.34
MSRP $213.46
$116.34
Heater & AC Control
Part Number: 84563969
Positions: Rear
Other Names: Heater Control, Control More Names
Replaces: 20765839, 23283463
Description: Express, savana. Rear. More Info
Notes: Included with front headliner. More Notes
Fits:
  • Chevrolet:
    • Express 1500,
    • Express 2500,
    • Express 3500
  • GMC:
    • Savana 1500,
    • Savana 2500,
    • Savana 3500
  • 1 more
MSRP $189.42
$103.23
MSRP $189.42
$103.23
Heater & AC Control
Part Number: 15881861
Other Names: Radio Control, Dash Control Unit, Heater Control, Control Module, Module More Names
Description: Floor console. Without rear heated seats. Yukon XL, Suburban. Enclave, Traverse. With audio control. Tahoe & Yukon without denali,... More Info
Notes: Included with console assembly. More Notes
Fits:
  • Buick:
    • Enclave
  • Chevrolet:
    • Suburban 1500,
    • Suburban 2500,
    • Tahoe,
    • Traverse
  • GMC:
    • Yukon,
    • Yukon XL 1500,
    • Yukon XL 2500
  • 3 more
MSRP $361.56
$197.05
MSRP $361.56
$197.05
Heater & AC Control
Part Number: 10385181
Other Names: Heater Control, F (S)Control More Names
Description: Outlook. Without audio cntrl. More Info
Fits:
  • Saturn:
    • Outlook
MSRP $579.80
$315.99
MSRP $579.80
$315.99
Heater & AC Control
Part Number: 84117015
Other Names: Combo Switch, Heater Control, Control More Names
Replaces: 23202785, 23259519, 23459696
Description: Escalade ESV. Escalade, console base. More Info
Notes: Included with Rear panel. More Notes
Fits:
  • Cadillac:
    • Escalade,
    • Escalade ESV
MSRP $207.98
$113.35
MSRP $207.98
$113.35
Heater Core Cover
Part Number: 22743924
Other Names: Heater Core Access Cover, F (S)Cover More Names
Fits:
  • Cadillac:
    • XTS
  • Chevrolet:
    • Impala
MSRP $29.16
$17.50
MSRP $29.16
$17.50
Dash Control Unit
Part Number: 16220102
Other Names: AC & Heater Assembly, More Names
Description: Pontiac. With electric temp. With electronic control. More Info
Fits:
  • Pontiac:
    • Bonneville
MSRP $575.80
$518.22
MSRP $575.80
$518.22
Dash Control Unit
Part Number: 16124900
Other Names: AC & Heater Assembly, More Names
Description: Buick. 1990-91, control dash module. Riviera. More Info
Notes: Order by year, model & description. More Notes
Fits:
  • Buick:
    • Reatta,
    • Riviera
MSRP $205.31
$184.78
MSRP $205.31
$184.78
Combo Switch
Part Number: 23467327
Positions: Rear, Lower
Other Names: Heater Control, Heater & AC Control, Control More Names
Replaces: 20929715
Description: Tahoe, Yukon. Without heated rear seats. Without sunroof, rear, without entertainment system. Console & rear components, without seat... More Info
Notes: Included with roof console. Included with center console. Included with console assembly. Order by description. More Notes
Fits:
  • Buick:
    • Envision
  • Cadillac:
    • Escalade,
    • Escalade ESV
  • Chevrolet:
    • Suburban,
    • Suburban 3500 HD,
    • Tahoe
  • GMC:
    • Acadia,
    • Yukon,
    • Yukon XL
  • 4 more
MSRP $253.36
$138.08
MSRP $253.36
$138.08
Case
Part Number: 52470845
Other Names: AC & Heater Case, Evaporator Case, More Names
Description: Without console. With mini console. More Info
Fits:
  • Cadillac:
    • DeVille,
    • Eldorado,
    • Seville
MSRP $58.57
$52.71
MSRP $58.57
$52.71
HVAC Unit Case
Part Number: 84432299
Other Names: AC & Heater Case, F (S)Case More Names
Description: With auto temp ctrl, 2nd design. More Info
Fits:
  • Cadillac:
    • XT4
  • Chevrolet:
    • Malibu
MSRP $164.54
$102.25
MSRP $164.54
$102.25
HVAC Unit Case
Part Number: 84486334
Other Names: AC & Heater Case, F (S)Case More Names
Description: Without auto temp ctrl, 2nd design. More Info
Fits:
  • Chevrolet:
    • Malibu
MSRP $162.08
$100.73
MSRP $162.08
$100.73
Evaporator Assembly Clip
Part Number: 25740403
Positions: Front
Other Names: AC & Heater Case Clip, F (S)Clip More Names
Description: Front. 2008-11. More Info
Notes: Included with evaporator assembly. More Notes
Fits:
  • Cadillac:
    • CTS,
    • SRX,
    • STS
MSRP $10.01
$6.85
MSRP $10.01
$6.85
Lower Case Stud
Part Number: 11562120
Positions: Rear, Front
Other Names: AC & Heater Case Stud, HVAC Unit Case Stud, Stud More Names
Description: Rear. Front with auto temp control. More Info
Fits:
  • Buick:
    • Enclave
  • Cadillac:
    • XT6
  • Chevrolet:
    • Traverse
  • GMC:
    • Acadia,
    • Acadia Limited
MSRP $8.38
$6.29
MSRP $8.38
$6.29
Climate Controlled Seat Cooling Unit
Part Number: 23223774
Positions: Front Left Lower Front, Front Right Lower Front
Other Names: Mat, Seat Cushion Heater, Element, Seat Heater Pad More Names
Replaces: 23232083
Description: Front seat. Seat cushion. Bucket seat with heated, with ventilation without massage. Tahoe & Yukon. Bucket seat, with heater, with... More Info
Notes: Included with seat assembly. More Notes
Fits:
  • Cadillac:
    • Escalade
  • Chevrolet:
    • Silverado 2500 HD,
    • Silverado 3500 HD,
    • Suburban,
    • Tahoe
  • GMC:
    • Sierra 2500 HD,
    • Sierra 3500 HD,
    • Yukon,
    • Yukon XL
  • 4 more
MSRP $146.58
$95.87
MSRP $146.58
$95.87
Hose & Tube Assembly O-Ring
Part Number: 52474375
Positions: Front Upper, Front, Front Rear, Rear Upper, Rear Front, Rear
Other Names: Evaporator Tube O-Ring, A/C Line O-Ring, Front Suction Hose Seal, Rear AC Tube Seal, Rear Suction Tube Seal, Front AC Hose O-Ring,... More Names
Replaces: 02724966, 24436645
Description: Upper, large. Outlet tube. 3.6L. 2.4L. To compressor. 25mm. 3.5L. More Info
Notes: Included with rear AC hose. Included with evaporator tube. Included with rear suction tube. Included with front suction hose. Included... More Notes
Fits:
  • Chevrolet:
    • Silverado 1500,
    • Silverado 2500,
    • Spark,
    • Trax
  • GMC:
    • Savana 2500,
    • Savana 3500,
    • Sierra 1500,
    • Sierra 2500
  • Saturn:
    • Outlook,
    • Vue
  • 5 more
MSRP $6.52
$4.89
MSRP $6.52
$4.89
A/C Evaporator Core Seal
Part Number: 89019245
Positions: Outer Rear, Outer, Outer Front, Outer Upper
Other Names: Expansion Valve Seal, Evaporator Seal, Evaporator Core Seal, Expansion Valve Upper Seal, Evaporator Tube Seal, Expansion Valve... More Names
Replaces: 2724952
Description: Large. Without hybrid, front, 23.5 mm od. Upper. 2.4L, front. Rear auxiliary, outlet tube. 3.6L. 23.5mm O.D. x 15.5mm I.D. 3.0L, front.... More Info
Notes: Included with heater core. Included with pressure hose. Included with evaporator core. Included with evaporator tube. Included with... More Notes
Fits:
  • Buick:
    • Enclave,
    • LaCrosse
  • Cadillac:
    • Escalade,
    • XT6
  • Chevrolet:
    • Captiva Sport,
    • Corvette,
    • Malibu,
    • Tahoe,
    • Traverse
  • GMC:
    • Acadia,
    • Acadia Limited,
    • Yukon
  • Saturn:
    • Outlook,
    • Vue
  • 9 more
MSRP $12.35
$7.42
MSRP $12.35
$7.42
Climate Controlled Seat Cooling Unit
Part Number: 84017516
Positions: Front Right Lower Front, Front Left Lower Front
Other Names: Mat, Element, Seat Cushion Heater, Seat Heater Pad, F Mat More Names
Replaces: 23364541
Description: Front seat. Seat cushion. Bucket seat with heated, with ventilation without massage. Tahoe & Yukon. More Info
Notes: Included with seat assembly. More Notes
Fits:
  • Cadillac:
    • Escalade
  • Chevrolet:
    • Silverado 1500,
    • Silverado 2500 HD,
    • Silverado 3500 HD,
    • Tahoe
  • GMC:
    • Sierra 1500,
    • Sierra 2500 HD,
    • Sierra 3500 HD,
    • Yukon
  • 4 more
MSRP $107.64
$70.39
MSRP $107.64
$70.39
Climate Controlled Seat Cooling Unit
Part Number: 84445273
Positions: Front Right Upper Rear, Front Right Upper Front, Front Left Upper Rear, Front Left Upper Front
Other Names: Mat, Seat Back Heater, Element More Names
Replaces: 23364540
Description: Front seat. Seat back. With heated, with ventilation, without massage, Tahoe & Yukon. More Info
Notes: Included with seat assembly. More Notes
Fits:
  • Cadillac:
    • Escalade ESV
  • Chevrolet:
    • Silverado 1500,
    • Silverado 2500 HD,
    • Silverado 3500 HD,
    • Suburban,
    • Tahoe
  • GMC:
    • Sierra 1500,
    • Sierra 2500 HD,
    • Sierra 3500 HD,
    • Yukon,
    • Yukon XL
  • 6 more
MSRP $115.73
$75.69
MSRP $115.73
$75.69
Climate Controlled Seat Cooling Unit
Part Number: 23223775
Positions: Front Left Upper Rear, Front Left Upper Front, Front Right Upper Rear, Front Right Upper Front
Other Names: Mat, Seat Back Heater, Element More Names
Description: Tahoe, Yukon. Front seat. Seat back. With ventilation. More Info
Notes: Included with seat assembly. More Notes
Fits:
  • Cadillac:
    • Escalade ESV
  • Chevrolet:
    • Silverado 1500,
    • Silverado 2500 HD,
    • Silverado 3500 HD,
    • Suburban,
    • Tahoe
  • GMC:
    • Sierra 1500,
    • Sierra 2500 HD,
    • Sierra 3500 HD,
    • Yukon,
    • Yukon XL
  • 6 more
MSRP $133.33
$87.20
MSRP $133.33
$87.20
AC Hoses
Part Number: 84524267
Other Names: A/C Refrigerant Suction Hose, HVAC Heater Hose Assembly, Hose More Names
Replaces: 23443879, 23499086
Description: Auxiliary evaporator hose. Escalade ESV. Suburban. Yukon XL. AuxIliary HVAC. Underbody Pipe and Hose Assy.. Incl.Liquid Hose. Incl.HVAC... More Info
Fits:
  • Cadillac:
    • Escalade ESV
  • Chevrolet:
    • Suburban
  • GMC:
    • Yukon XL
MSRP $377.53
$205.76
MSRP $377.53
$205.76
AC Hoses
Part Number: 10176073
Other Names: Hose & Tube Assembly, AC Hose, More Names
Description: Compressor fitting with hoses. 3.4L. More Info
Notes: Includes o-ring. More Notes
Fits:
  • Chevrolet:
    • Lumina
  • Oldsmobile:
    • Cutlass Supreme
  • Pontiac:
    • Grand Prix
MSRP $92.55
$83.30
MSRP $92.55
$83.30
AC Hoses
Part Number: 10190633
Other Names: AC Hose, Hose & Tube Assembly, More Names
Description: Compressor to condenser, 3.4L. More Info
Fits:
  • Chevrolet:
    • Lumina,
    • Monte Carlo
  • Oldsmobile:
    • Cutlass Supreme
  • Pontiac:
    • Grand Prix
MSRP $141.44
$127.30
MSRP $141.44
$127.30
AC Tube
Part Number: 96859682
Other Names: AC Hoses, Tube More Names
Description: Aveo. Condenser hose. More Info
Fits:
  • Chevrolet:
    • Aveo,
    • Aveo5
MSRP $189.26
$103.15
MSRP $189.26
$103.15
AC Hose
Part Number: 15031850
Positions: Rear
Other Names: AC Hoses, More Names
Description: With rear ac, 4.3L. Express, savana. 4.3l. Rear ac unit. More Info
Notes: Order by description. More Notes
Fits:
  • Chevrolet:
    • Express 1500,
    • Express 2500
  • GMC:
    • Savana 1500,
    • Savana 2500,
    • Savana 3500
MSRP $164.81
$148.33
MSRP $164.81
$148.33
AC Hose
Part Number: 25918384
Other Names: AC Hoses, A/C Refrigerant Suction Hose, Hose More Names
Description: 6.6L, to accumulator, without rear ac. Express, savana. 6.6l diesel. Compressor to accumulator. Exc.Ambulance. Exc.Auxiliary A/C. More Info
Fits:
  • Chevrolet:
    • Express 2500,
    • Express 3500
  • GMC:
    • Savana 2500,
    • Savana 3500
MSRP $121.43
$66.17
MSRP $121.43
$66.17
AC Hose
Part Number: 22545191
Other Names: AC Hoses, More Names
Description: From rear of compressor. Pontiac. 2.0L without turbo, stamped 22545191. More Info
Fits:
  • Pontiac:
    • J2000 Sunbird,
    • Sunbird
MSRP $108.74
$97.87
MSRP $108.74
$97.87
AC Hoses
Part Number: 22580683
Other Names: AC Hose, Lines, A/C Refrigerant Discharge Hose, Hose & Tube Assembly, More Names
Description: To compressor, 2.2L. Compressor To Condenser. Incl.A/C Refrigerant Suction Hose. More Info
Fits:
  • Chevrolet:
    • Beretta,
    • Corsica
MSRP $173.33
$156.00
MSRP $173.33
$156.00
AC Line
Part Number: 3528241
Other Names: AC Hoses, More Names
Description: All models. 4.6l. Evaporator to condenser, 4.6L. More Info
Notes: Does not include O-rings. More Notes
Fits:
  • Cadillac:
    • DeVille,
    • Eldorado,
    • Seville
MSRP $125.44
$112.90
MSRP $125.44
$112.90
AC Line
Part Number: 42592643
Other Names: AC Hoses, Hose More Names
Replaces: 96435887
Description: Aveo, Aveo5. Notchback. Evaporator hose. More Info
Fits:
  • Chevrolet:
    • Aveo,
    • Aveo5
MSRP $125.54
$68.42
MSRP $125.54
$68.42
AC Line
Part Number: 60002046
Positions: Rear
Other Names: Rear AC Line, F (S)Hose More Names
Description: Condenser & components, 1.3L. More Info
Fits:
  • Buick:
    • Encore GX
  • Chevrolet:
    • Trailblazer
MSRP $61.02
$33.26
MSRP $61.02
$33.26
AC Hose
Part Number: 84211467
Other Names: AC Hoses, F (S)Hose More Names
Replaces: 15753119
Description: 4.8, 5.3 & 6.0L, to accumulator, with rear ac. Express, savana. 4.8l, 5.3l, 6.0l. Compressor to accumulator. More Info
Fits:
  • Chevrolet:
    • Express 1500,
    • Express 2500,
    • Express 3500
  • GMC:
    • Savana 1500,
    • Savana 2500,
    • Savana 3500
  • 1 more
MSRP $113.12
$61.65
MSRP $113.12
$61.65

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