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Air conditioning does not wear out gradually — it leaks. We find where, tell you what it will take to fix properly, and get the cold air back before the next 100-degree week.
This is the single most useful thing to understand about car A/C. The refrigerant is sealed in a closed loop and nothing consumes it. If the system is low, it is because it escaped somewhere.
Most of these are worth catching early — a small leak fixed now is cheaper than a compressor replaced later.
The most common complaint and usually the earliest. The system still works, it just cannot pull the temperature down the way it used to.
Plenty of cold, not much of it arriving. Often a blocked cabin air filter rather than the A/C system at all — and that is a cheap fix.
Moisture sitting in the evaporator case. Usually the cabin filter and a system clean, occasionally a blocked drain.
The compressor clutch engaging and disengaging rapidly usually means low refrigerant. Running it that way is what kills compressors.
On dual-zone systems that points at a blend door actuator rather than the refrigerant side. Often a clicking noise behind the dash goes with it.
Tahoe, Suburban and Traverse run long rear lines to a second evaporator. More plumbing means more places for refrigerant to escape.
Anyone can put refrigerant in. The part that matters is establishing where it went, because a system that lost its charge once will lose it again.
Worth being straight about, because it is where most of the money gets wasted.
Systems lose a very small amount of refrigerant over many years. On an older vehicle with no measurable leak, topping it back to spec is a reasonable fix.
If it went cold and stopped within a season, there is a leak. Recharging without finding it buys you weeks, and you pay for the refrigerant twice.
We would rather tell you it needs a condenser than sell you a recharge that fails in August. You get the pressures and the leak location either way.
Older Chevrolets use R-134a; most built from roughly 2015 onward use R-1234yf. They are not interchangeable, they need different equipment, and they cost very different amounts — which is why an A/C quote for a 2012 Silverado and a 2022 one are not comparable. We will tell you which yours takes.
GM Genuine and ACDelco climate parts, engineered for your vehicle and backed by GM. Order online for pickup here, or have us fit them.
The compressor circulates the refrigerant. GM Genuine OE compressors are the only ones GM recommends for a GM vehicle.
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The condenser sits at the front of the vehicle and takes the worst of the road debris. A common leak point after a stone strike.
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High and low side lines, service valves, seal kits and connectors — where most slow refrigerant leaks actually originate.
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The cheapest fix for weak airflow, and the one that decides what your vents smell like. Worth changing before assuming the system is broken.
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Control panels, blend door actuators, sensors and valves. A clicking dash or one side blowing warm is usually an actuator.
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The same system that cools you also heats you. Heater cores, control valves, clamps and seals for when the heat stops working.
Parts DepartmentA/C faults are easy to misdiagnose from the symptom alone — weak airflow and weak cooling are different problems entirely. Call the parts counter at (916) 367-4192 with your VIN, or book a check and we will tell you what it actually needs.
Nobody budgets for the compressor going out in July. Points are worth a cent each against the bill, and most owners have a balance without knowing it — call and we will check yours.
Most often the system is low on refrigerant because of a leak. It can also be an electrical fault, a failed compressor clutch or a blend door actuator sending you heated air. The pressures and the vent temperature tell us which.
Sometimes. But refrigerant is sealed in a closed loop and nothing uses it up, so a system that is low has lost it somewhere. If yours went cold and stopped within a season, a recharge alone will not hold.
UV dye circulated through the system and traced with a light, or an electronic detector that senses escaping refrigerant. Both beat guessing, and both tell you whether it is a seal, a line, the condenser or the compressor.
Older vehicles use R-134a; most built from roughly 2015 onward use R-1234yf. They are not interchangeable and need different equipment. Give us your year and model and we will confirm which yours takes.
Moisture sitting in the evaporator case, usually alongside a cabin air filter that is past due. A new filter and a system clean fixes most cases; a blocked evaporator drain causes the rest.
Roughly every other oil change on typical driving, sooner if you spend time behind trucks or on unpaved roads. It is the cheapest thing on this page and the first thing to check if airflow is weak.
Yes, and it does more work than in a petrol vehicle — the same circuit often helps cool the battery. It still uses refrigerant and can still leak. See our EV service page for what else is different.
Running it briefly every few weeks keeps the seals lubricated and is the cheapest preventative there is. It is also what your defroster uses to pull moisture out of the air.
Roseville Chevrolet diagnoses and repairs vehicle air conditioning for drivers throughout Roseville, Rocklin, Granite Bay, Citrus Heights, Lincoln, Loomis, Antelope and Orangevale from 350 Automall Dr, with GM Genuine and ACDelco climate parts and technicians who work on these systems constantly through the summer.
Weeks over 100 degrees are normal here, and that is exactly when a marginal A/C system gives up. If yours is not as cold as it was last year, have it looked at before the heat arrives rather than during it. While you are in, see oil changes, battery service and the maintenance schedule, or current offers on the service specials page.
Get it checked before the next heat wave. Book online, or call and describe what it is doing.
(916) 905-4889Roseville Chevrolet · 350 Automall Dr, Roseville, CA 95661 · Service: (916) 905-4889 · Parts: (916) 367-4192. Serving Roseville, Rocklin, Granite Bay, Citrus Heights, Lincoln, Loomis, Antelope, Orangevale and the greater Sacramento area. Air conditioning diagnosis, repair requirements and refrigerant type vary by model, model year and equipment — refrigerant types are not interchangeable and are confirmed by vehicle. Descriptions of common faults on this page are general guidance, not a diagnosis of your vehicle. Online parts orders are placed through the GM Parts Store, operated by General Motors; pricing, availability, shipping and returns are set by that store and subject to change. Limited warranty coverage varies by part and product line; most GM Original Equipment and ACDelco Gold lines carry a 24-month/unlimited-mile limited warranty and ACDelco Silver lines carry 12 months/unlimited miles. See the warranty details for the specific part, or ask an advisor, for complete terms and exclusions. Service specials and manufacturer rebates are subject to change and expiration. GM Rewards is operated and administered by General Motors; point values and eligibility are set by GM and subject to change.