Car A/C Repair in Chennai: Diagnosed First, Quoted After
Cooling gone weak, noisy or dead? The free 30-point A/C and electrical checkup finds the fault before anyone quotes you a part. Ambattur workshop, Monday to Saturday, 10 AM to 8 PM.
Reviewed by G.M. Manigandan, founder and lead technician · Last reviewed
What we repair
GM Car A/C Service is a multibrand workshop in Kallikuppam, Ambattur. A/C is the specialism, and the same bay also handles general service, electrical faults and the parts that a diagnosis turns up.
A/C not cooling
Weak air, cools only while moving, or nothing cold at all. Usually refrigerant charge, airflow or a failing compressor.
A/C not cooling →Refrigerant leaks
Cooling that fades weeks after a refill means the gas is escaping. We find where before we refill again.
Leak detection →Compressor faults
Clutch not engaging, rumble, knock or squeal. Diagnosed before replacement is ever recommended.
Compressor repair →Condenser and cooling coil
Blocked fins, fan not cutting in, or a leaking evaporator behind the dashboard.
Condenser work →Smell and cabin air
Musty air on start-up is usually the evaporator and the cabin filter, not the gas.
Odour treatment →A/C electrical faults
Relays, fuses, blower resistors and wiring. The free checkup covers thirteen electrical points.
Electrical diagnosis →
What it costs
One thing carries a price: the checkup, which is free. Everything else is quoted after the car has been looked at, because guessing a compressor price over the phone helps nobody.
| Service | Price |
|---|---|
| 30-point A/C & electrical checkup, with a written report | Free |
| A/C gas filling, single module (leak check included) | Quoted after the checkup |
| A/C gas filling, double module (leak check included) | Quoted after the checkup |
| Compressor, condenser, evaporator and major A/C work | Diagnosed first, quoted after |
| Petrol car general service | Quoted after the checkup |
| Diesel car general service | Quoted after the checkup |
How a repair runs
- The free 30-point checkup. Seventeen A/C points and thirteen electrical, about fifteen minutes, with vent temperature and battery voltage written down. Those two numbers are the evidence if the car ever comes back.
- The findings, shown to you. Each point is marked OK, Attention or Urgent. Anything marked is explained, not just listed.
- A written estimate. Parts and labour itemised. Nothing paid starts until you approve it.
- The repair. Vacuum, correct refrigerant type and charge weight for your model, and a re-test afterwards.
- Delivery. Vent temperature re-checked in front of you, with the invoice and the next service date.
Model guides that follow the same order: why a Baleno A/C compressor cuts on and off and where we start when a Kwid or Triber is not cooling.
Free pick-up and drop
Free pick-up and drop anywhere in Chennai, on confirmed bookings, subject to slot availability. Call or WhatsApp to arrange it when you book.
Booking this more than once a year?
GM Cool Care annual plans bundle scheduled visits, the 30-point checkup and priority slots. Booked one at a time, the same visits cost more.
See the Care PlansGet Your Free 30-Point Checkup
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Prefer to talk? Call +91 84280 00085 or WhatsApp us.
Four steps, in this order, every time
Diagnosis-first is the whole method: measure, write it down, then price it. It is also why every job, gas filling included, is quoted in writing after the checkup.
We test before we quote
The free 30-point A/C and electrical checkup runs first, about 15 minutes, with a written report of what was measured.
You get the estimate in writing
The report says what was found. Gas filling, like everything else, is quoted in writing after the checkup, and nothing starts until you approve it.
No work starts until you approve
Nothing is opened up or replaced before you say yes to the estimate. If the diagnosis changes the scope, you hear about it first.
Repaired, then checked again
The approved work is done and the car is checked again before handover.
Frequently asked questions
How much does car AC repair cost in Chennai?
The 30-point A/C and electrical checkup is free and gives you a written report. Gas filling includes a leak check and a vacuum. Compressor, condenser and evaporator work is quoted after the inspection, because the price depends on which part has failed and on your car model. You approve the written estimate before any paid work begins. Call +91 84280 00085.
Do I need an appointment for car AC repair?
Walk-ins are welcome at our Ambattur workshop, Monday to Saturday, 10 AM to 8 PM. Booking ahead helps because free checkup slots are limited each day and the bays fill up. Call or WhatsApp +91 84280 00085.
How long does car AC repair take?
A gas fill with a leak check is usually done the same visit. A compressor, condenser or evaporator replacement depends on parts availability for your model, and we tell you the expected time in writing with the estimate rather than promising a turnaround we cannot control.
Which car brands do you service?
GM Car A/C Service is a multibrand workshop. Maruti Suzuki, Hyundai, Tata, Toyota, Mahindra, Honda, Kia and others are all handled at the Ambattur workshop, for A/C, general service and electrical work.
Will you replace parts without telling me?
No. Every job runs diagnosis first, then a written estimate, then your approval. If the inspection finds something beyond what you came in for, it goes on the estimate as a separate line for you to accept or decline.
Related pages and areas
Tell us what the car is doing
We will call you back to confirm a slot. Nothing is charged and nothing is booked until we have spoken.
Customer Service · Individual car owners. Mon–Sat 10:00 AM – 8:00 PM, Sunday closed. Prefer not to call? The form takes a minute.
Illustrative image. Not a photograph of GM premises, staff or a customer vehicle.