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 then 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.

Heater and Air Conditioning Evaporator Case
Part Number: 39146859
Other Names: AC & Heater Case More Names
Description: Without dual-zone. This GM Genuine Part is designed, engineered, and tested to rigorous standards and is backed by General Motors\ \ \... More Info
MSRP $199.73
$124.09
MSRP $199.73
$124.09
Heater and Air Conditioning Evaporator Case
Part Number: 39156534
Other Names: AC & Heater Case More Names
Replaces: 39057008, 39008520
Description: Without climate control. This GM Genuine Part is designed, engineered, and tested to rigorous standards and is backed by General... More Info
MSRP $204.90
$111.67
MSRP $204.90
$111.67
Heater and Air Conditioning Evaporator Case
Part Number: 84110382
Options: Front
Other Names: AC & Heater Case More Names
Description: Front, quad zone. This GM Genuine Part is designed, engineered, and tested to rigorous standards and is backed by General Motors\... More Info
MSRP $85.61
$53.18
MSRP $85.61
$53.18
Heater and Air Conditioning Evaporator Case
Part Number: 84273429
Other Names: AC & Heater Case More Names
Description: With auto temp cntrl, 6.6L diesel. This GM Genuine Part is designed, engineered, and tested to rigorous standards and is backed by... More Info
MSRP $341.08
$185.89
MSRP $341.08
$185.89
Heater and Air Conditioning Evaporator Case
Part Number: 84337272
Other Names: AC & Heater Case More Names
Replaces: 23378067, 84171604
Description: Without dual-zone. This GM Genuine Part is designed, engineered, and tested to rigorous standards and is backed by General Motors\ \ \... More Info
MSRP $180.60
$98.43
MSRP $180.60
$98.43
Heater and Air Conditioning Evaporator Case
Part Number: 84340792
Options: Lower
Other Names: AC & Heater Case More Names
Description: With auto temp cntrl. This GM Genuine Part is designed, engineered, and tested to rigorous standards and is backed by General Motors\ \... More Info
MSRP $324.58
$176.90
MSRP $324.58
$176.90
Auxiliary Heater and Air Conditioning Control
Part Number: 84563968
Options: Rear, Front
Other Names: Heater & AC Control More Names
Replaces: 25960280, 23283464
Description: Express, savana. Front. Restores the operation and function of your vehicles heating and cooling controls\ \ \ \ \ \ Manufactured to GM... More Info
Notes: Included with front headliner. More Notes
MSRP $168.74
$91.95
MSRP $168.74
$91.95
Heater and Air Conditioning Evaporator Case
Part Number: 84767443
Options: Front
Other Names: AC & Heater Case More Names
Description: Front, dual zone. This GM Genuine Part is designed, engineered, and tested to rigorous standards and is backed by General Motors\ \ \ \... More Info
MSRP $248.80
$154.62
MSRP $248.80
$154.62
Heater and Air Conditioning Evaporator Case
Part Number: 84795091
Other Names: AC & Heater Case More Names
Description: Without auto temp ctrl, 2nd design. This GM Genuine Part is designed, engineered, and tested to rigorous standards and is backed by... More Info
MSRP $194.80
$106.17
MSRP $194.80
$106.17
Heater and Air Conditioning Evaporator Case
Part Number: 23309412
Options: Lower
Other Names: AC & Heater Case More Names
Replaces: 23129018, 23185036
Description: With auto temp cntrl. This GM Genuine Part is designed, engineered, and tested to rigorous standards and is backed by General Motors\ \... More Info
MSRP $401.76
$218.96
MSRP $401.76
$218.96
Auxiliary Heater and Air Conditioning Control
Part Number: 84563969
Options: Rear
Other Names: Heater & AC Control More Names
Replaces: 20765839, 23283463
Description: Express, savana. Rear. Restores the operation and function of your vehicles heating and cooling controls\ \ \ \ \ \ Manufactured to GM... More Info
Notes: Included with front headliner. More Notes
MSRP $189.42
$103.23
MSRP $189.42
$103.23
Heater and Air Conditioning Evaporator Case
Part Number: 39141364
Other Names: AC & Heater Case More Names
Description: This GM Genuine Part is designed, engineered, and tested to rigorous standards and is backed by General Motors\ \ \ \ Original equipment... More Info
MSRP $167.15
$103.84
MSRP $167.15
$103.84
Heater and Air Conditioning Evaporator Case
Part Number: 23301384
Other Names: AC & Heater Case More Names
Replaces: 23129015, 23185033
Description: Without auto temp cntrl. This GM Genuine Part is designed, engineered, and tested to rigorous standards and is backed by General... More Info
MSRP $401.76
$218.96
MSRP $401.76
$218.96
Heater and Air Conditioning Evaporator Case
Part Number: 23388562
Other Names: AC & Heater Case More Names
Replaces: 13339074, 13351401
Description: With climate control. This GM Genuine Part is designed, engineered, and tested to rigorous standards and is backed by General Motors\ \... More Info
MSRP $238.66
$130.07
MSRP $238.66
$130.07
Heater and Air Conditioning Evaporator Case
Part Number: 23416452
Other Names: AC & Heater Case More Names
Replaces: 23473611
Description: With auto temp cntrl, with console vent. Without auto rear cntrl. This GM Genuine Part is designed, engineered, and tested to rigorous... More Info
MSRP $257.20
$140.17
MSRP $257.20
$140.17
Heater and Air Conditioning Evaporator Case
Part Number: 23101930
Other Names: AC & Heater Case More Names
Description: Without auto temp cntrl, with console vent. This GM Genuine Part is designed, engineered, and tested to rigorous standards and is backed... More Info
MSRP $196.26
$121.94
MSRP $196.26
$121.94
Heater and Air Conditioning Evaporator Case
Part Number: 84114582
Other Names: AC & Heater Case More Names
Description: With tri-zone. This GM Genuine Part is designed, engineered, and tested to rigorous standards and is backed by General Motors\ \ \ \... More Info
MSRP $155.09
$96.36
MSRP $155.09
$96.36
Heater and Air Conditioning Evaporator Case
Part Number: 84225481
Other Names: AC & Heater Case More Names
Description: Without auto temp ctrl, 1st design. Without auto temp ctrl, without rear vent. This GM Genuine Part is designed, engineered, and tested... More Info
MSRP $192.86
$105.11
MSRP $192.86
$105.11
Heater and Air Conditioning Evaporator Case
Part Number: 84225483
Other Names: AC & Heater Case More Names
Description: With auto temp ctrl, 1st design. This GM Genuine Part is designed, engineered, and tested to rigorous standards and is backed by General... More Info
MSRP $186.40
$101.59
MSRP $186.40
$101.59
Heater and Air Conditioning Evaporator Case
Part Number: 84337271
Other Names: AC & Heater Case More Names
Replaces: 23378068, 84171605
Description: With dual-zone. This GM Genuine Part is designed, engineered, and tested to rigorous standards and is backed by General Motors\ \ \ \... More Info
MSRP $178.78
$97.44
MSRP $178.78
$97.44
Heater and Air Conditioning Evaporator Case
Part Number: 13339073
Other Names: AC & Heater Case More Names
Description: Without climate control. This GM Genuine Part is designed, engineered, and tested to rigorous standards and is backed by General... More Info
MSRP $200.88
$124.81
MSRP $200.88
$124.81
Heater and Air Conditioning Evaporator Case
Part Number: 39150991
Other Names: AC & Heater Case More Names
Description: With climate control. This GM Genuine Part is designed, engineered, and tested to rigorous standards and is backed by General Motors\... More Info
MSRP $176.86
$109.90
MSRP $176.86
$109.90
Heater and Air Conditioning Evaporator Case
Part Number: 39227427
Other Names: AC & Heater Case More Names
Description: With dual-zone. This GM Genuine Part is designed, engineered, and tested to rigorous standards and is backed by General Motors\ \ \ \... More Info
MSRP $16.45
$11.26
MSRP $16.45
$11.26
Heater and Air Conditioning Evaporator Case
Part Number: 84055928
Options: Center Rear
Other Names: AC & Heater Case More Names
Description: REAR. center. This GM Genuine Part is designed, engineered, and tested to rigorous standards and is backed by General Motors\ \ \ \... More Info
MSRP $83.44
$45.47
MSRP $83.44
$45.47
Heater and Air Conditioning Evaporator Case
Part Number: 84055929
Options: Lower Rear, Lower
Other Names: AC & Heater Case More Names
Description: REAR. lower. This GM Genuine Part is designed, engineered, and tested to rigorous standards and is backed by General Motors\ \ \ \... More Info
MSRP $76.23
$47.36
MSRP $76.23
$47.36
Heater and Air Conditioning Evaporator Case
Part Number: 84225480
Other Names: AC & Heater Case More Names
Description: Without auto temp ctrl, with rear vent. This GM Genuine Part is designed, engineered, and tested to rigorous standards and is backed by... More Info
MSRP $182.76
$99.60
MSRP $182.76
$99.60
Heater and Air Conditioning Evaporator Case
Part Number: 84340794
Other Names: AC & Heater Case More Names
Replaces: 84104358
Description: Without auto temp cntrl. This GM Genuine Part is designed, engineered, and tested to rigorous standards and is backed by General... More Info
MSRP $378.40
$206.23
MSRP $378.40
$206.23
Heater and Air Conditioning Evaporator Case
Part Number: 23309411
Other Names: AC & Heater Case More Names
Replaces: 23185037
Description: With auto temp cntrl 6.6L diesel. This GM Genuine Part is designed, engineered, and tested to rigorous standards and is backed by... More Info
MSRP $240.96
$131.32
MSRP $240.96
$131.32
Heater and Air Conditioning Evaporator Case
Part Number: 23455128
Other Names: AC & Heater Case More Names
Replaces: 13397363
Description: Without auto climate. This GM Genuine Part is designed, engineered, and tested to rigorous standards and is backed by General Motors\... More Info
MSRP $197.16
$122.49
MSRP $197.16
$122.49
Heater and Air Conditioning Evaporator Case
Part Number: 23458166
Other Names: AC & Heater Case More Names
Replaces: 22743929
Description: With auto temp cntrl, without concole vent. Without auto rear cntrl. This GM Genuine Part is designed, engineered, and tested to... More Info
MSRP $272.74
$148.64
MSRP $272.74
$148.64
Heater and Air Conditioning Evaporator Case
Part Number: 95920156
Other Names: AC & Heater Case More Names
Description: Without high output, without auto temp cntrl. This GM Genuine Part is designed, engineered, and tested to rigorous standards and is... More Info
MSRP $129.26
$70.45
MSRP $129.26
$70.45
Heater and Air Conditioning Evaporator Case
Part Number: 95920157
Other Names: AC & Heater Case More Names
Description: Without HIGH OUTPUT. with auto temp cntrl. This GM Genuine Part is designed, engineered, and tested to rigorous standards and is backed... More Info
MSRP $136.10
$74.17
MSRP $136.10
$74.17
Heater and Air Conditioning Evaporator Case
Part Number: 84486333
Other Names: AC & Heater Case More Names
Description: Without auto temp ctrl. This GM Genuine Part is designed, engineered, and tested to rigorous standards and is backed by General Motors\... More Info
MSRP $216.54
$134.54
MSRP $216.54
$134.54
Heater and Air Conditioning Evaporator Case
Part Number: 84567421
Options: Front
Other Names: AC & Heater Case More Names
Description: Front. This GM Genuine Part is designed, engineered, and tested to rigorous standards and is backed by General Motors\ \ \ \ Original... More Info
MSRP $152.26
$94.62
MSRP $152.26
$94.62
Heater and Air Conditioning Evaporator Case
Part Number: 84767442
Options: Front
Other Names: AC & Heater Case More Names
Description: Front quad zone. with ionizing. This GM Genuine Part is designed, engineered, and tested to rigorous standards and is backed by General... More Info
MSRP $277.34
$172.35
MSRP $277.34
$172.35
Heater and Air Conditioning Evaporator Case
Part Number: 84795086
Other Names: AC & Heater Case More Names
Replaces: 84432300
Description: 2nd design. This GM Genuine Part is designed, engineered, and tested to rigorous standards and is backed by General Motors\ Original... More Info
MSRP $190.22
$103.67
MSRP $190.22
$103.67
Heater and Air Conditioning Evaporator Case
Part Number: 84225482
Other Names: AC & Heater Case More Names
Description: With auto temp ctrl. 3.6L. 2.5L. 1st design. This GM Genuine Part is designed, engineered, and tested to rigorous standards and is... More Info
MSRP $207.78
$113.24
MSRP $207.78
$113.24
Heater and Air Conditioning Evaporator Case
Part Number: 23222413
Other Names: AC & Heater Case More Names
Description: Without auto temp cntrl, with console vent. This GM Genuine Part is designed, engineered, and tested to rigorous standards and is backed... More Info
MSRP $223.95
$139.14
MSRP $223.95
$139.14
Heater and Air Conditioning Evaporator Case
Part Number: 23369529
Other Names: AC & Heater Assembly More Names
Replaces: 13351403, 13351411, 23172714, 23388561
Description: Without climate control. This GM Genuine Part is designed, engineered, and tested to rigorous standards and is backed by General... More Info
MSRP $295.30
$183.47
MSRP $295.30
$183.47
Heater and Air Conditioning Evaporator Case
Part Number: 23416455
Other Names: AC & Heater Case More Names
Replaces: 23458167, 23222414
Description: With auto rear cntrl. This GM Genuine Part is designed, engineered, and tested to rigorous standards and is backed by General Motors\... More Info
MSRP $318.97
$198.17
MSRP $318.97
$198.17
Heater and Air Conditioning Evaporator Case
Part Number: 23455127
Other Names: AC & Heater Case More Names
Replaces: 13363529
Description: With auto climate. This GM Genuine Part is designed, engineered, and tested to rigorous standards and is backed by General Motors\... More Info
MSRP $197.92
$107.87
MSRP $197.92
$107.87
Heater and Air Conditioning Evaporator Module
Part Number: 19318084
Other Names: AC & Heater Assembly More Names
Replaces: 19317370
Description: With rear defogger. This GM Genuine Part is designed, engineered, and tested to rigorous standards and is backed by General Motors\... More Info
MSRP $1,128.34
$603.66
MSRP $1,128.34
$603.66
Heater and Air Conditioning Evaporator Module
Part Number: 19318085
Other Names: AC & Heater Assembly More Names
Replaces: 19317801, 19318073
Description: Without rear defogger, lt. Channel-plate construction provides a high refrigerant contact surface area\ Vacuum-brazed,... More Info
MSRP $1,402.36
$750.26
MSRP $1,402.36
$750.26
Heater, Air Conditioning, and Radio Control Module
Part Number: 22981560
Other Names: Heater & AC Control More Names
Replaces: 15886900
Description: Cadillac. Escalade, base & luxury. This part requires programming and/or special setup procedures GM Service Information describes the... More Info
MSRP $537.32
$292.84
MSRP $537.32
$292.84
HVAC Heater and Air Conditioning Evaporator Module
Part Number: 92292658
Other Names: AC & Heater Case More Names
Description: 2014-17. Channel-plate construction provides a high refrigerant contact surface area\ \ Vacuum-brazed, corrosion-treated, and... More Info
Notes: Included with AC & heater assembly. More Notes
MSRP $748.46
$456.48
MSRP $748.46
$456.48
Heater, Air Conditioning, and Radio Control Module
Part Number: 15881861
Other Names: Heater & AC Control 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
MSRP $379.64
$206.90
MSRP $379.64
$206.90
Heater, Air Conditioning, and Radio Control Module
Part Number: 15886277
Other Names: Heater & AC Control More Names
Description: Floor console. With rear heated seats. Yukon XL, Suburban. Tahoe & Yukon without denali, with rear seat heater, all. , chevrolet & gmc... More Info
MSRP $364.17
$198.48
MSRP $364.17
$198.48
Heater and Air Conditioning Remote Control Bracket
Part Number: 23506173
Other Names: AC & Heater Case Bracket More Names
Description: 3.6L. This GM Genuine Part is designed, engineered, and tested to rigorous standards and is backed by General Motors More Info
MSRP $20.46
$13.99
MSRP $20.46
$13.99
Passenger Side Heater and Air Conditioning Evaporator Case
Part Number: 84055926
Options: Right Rear, Right
Other Names: AC & Heater Case More Names
Description: REAR. right side. This GM Genuine Part is designed, engineered, and tested to rigorous standards and is backed by General Motors\ \ \ \... More Info
MSRP $95.10
$51.83
MSRP $95.10
$51.83
Roof Console Auxiliary Heating/Air Conditioning Control with Seat Heater
Part Number: 23467328
Options: Lower
Other Names: Heater & AC 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
MSRP $277.01
$150.98
MSRP $277.01
$150.98

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