A/C not cooling? Free checkup in Ambattur.
A free 30-point A/C and electrical checkup in Kallikuppam. You see the readings, you get the estimate in writing, and nothing is opened up until you approve it.
Gas filling from ₹1,199. General service from ₹3,599. New offers on now.
Or call +91 88893 60888 · Mon–Sat 10 AM–8 PM
Illustrative image. Not a photograph of GM premises, staff or a customer vehicle.
Three ways in, depending on what the car is doing
Not sure which applies? Call or WhatsApp and describe the symptom, sorting that out is what the checkup is for.
Car A/C service & repair
Cooling loss, weak airflow, noise or smell, the system is tested before anything is replaced. Gas filling, like everything else, is quoted in writing after the free checkup.
- A/C not cooling
- Weak or noisy airflow
- Smell from the vents
- Cools then stops
Auto electrical diagnosis
Battery, alternator, starter, wiring, relays and overnight battery drain, tested before any part is recommended.
- Car will not start
- Warning light on
- Battery drains overnight
- Lights or power windows failing
Car general service
Periodic service with oil and filter change, brake and suspension inspection and a road test. Petrol and diesel are priced separately.
- Service due
- Brake noise
- Rough idle
- Overdue oil change
Illustrative image. Not a photograph of GM premises, staff or a customer vehicle.
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, 15 to 35 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.
Replacing the wrong part is the expensive way to fix a car
Most “A/C not cooling” jobs have more than one plausible cause. Testing first costs you fifteen minutes; skipping it costs a part that was never the problem.
The fault is measured, not guessed
Gauges, scanner and a load test come before a parts recommendation. That is what the written report records.
G.M. Manigandan, M.D and lead technician
He opened this workshop in 2019 and still works on cars himself. The diagnosis-before-replacement rule is his, he trains every technician here in it, and he teaches the 27-day A/C course himself. The person diagnosing your car is the person answering the phone.
Multibrand, independent
Maruti Suzuki, Hyundai, Tata, Toyota, Mahindra, Honda, Kia and more, serviced in one workshop in Ambattur.
“Every diagnosis is backed by data and explained to you in plain Tamil or English before a single screw is turned.”
What it costs, before you call
Free A/C, electrical and general checkup. We inspect first, explain the fault, and share the estimate before any paid work starts.
What A/C work costs depends on what the checkup finds: how much gas has gone, whether a part has failed, and whether the car has one A/C module or two. So we look first, then put the figure in writing.
30-point A/C & electrical checkup
Free
15 to 35 minutes, with a written report. 17 A/C points and 13 electrical points, run before any estimate.
From
₹1,199
A/C gas filling
Included
- Leak check before any gas goes in
- Vacuum, so moisture and air are out of the system
- Gas filled to what your car’s label specifies
What can move the figure
- Double A/C module (front and rear units)
- R1234yf instead of R134a gas
- A leak or a failed part found at the checkup
From
₹3,599
Car general service
Included
- Engine oil and filter
- Multi-point inspection, fluid levels, battery and tyre check
- Essential, Petrol and Diesel packages to choose from
What can move the figure
- Petrol or diesel, and the oil grade your engine takes
- Filters and parts specific to your model
- Wear found at the checkup, quoted before it is done
Quoted in writing after the free 30-point checkup, and you approve it before any paid work. Offer prices are on now, and each day’s slots are limited, so send a slot request early.
Quoted in writing after the free 30-point checkup, and you approve it before any paid work. That covers gas filling as well as compressor, condenser, cooling coil, wiring and general service work. How we quote.
What customers wrote after the work
“Found the correct cause within 15 minutes. Very impressed.”
Vignesh VickyCooling coil diagnosis and replacement
“My previous mechanic changed all AC parts but failed. This service centre found the issue, a leaky hose with a minute hole.”
Sunil GVA/C hose leak detection and repair
“Clearly explained there is no issue with AC components, only gas refill required.”
Jeeva BharathiA/C diagnosis and gas refill
Read on Google All attributed reviews
Estimate in writing first
You approve the figure before any paid work starts.
Free 30-point checkup
17 A/C and 13 electrical points, with a written report.
Free pick-up and drop
Free pick-up and drop anywhere in Chennai, on confirmed bookings, subject to slot availability.
Mon–Sat, 10 to 8
Kallikuppam, Ambattur. Sunday closed.
GM Cool Care, if you would rather budget once a year
Five plans covering A/C and general service across the year, with the free 30-point checkup at every visit.
Pre-summer A/C health check · Post-monsoon A/C health check. 5% off parts and labour.
A/C gas refill, single module, leak check included · Essential Service: oil and filter, 25-point check, exterior wash. 5% off parts.
General Service with the oil change · A/C gas refill, single module, leak check included · Essential Service, usually around the six-month mark · Pre-summer A/C performance check. 10% off parts.
General Service with the oil change · A/C gas refill, single module, leak check included · Essential Service, usually around the six-month mark · Pre-summer A/C performance check. 10% off parts.
General Service with the oil change · A/C gas refill, single module, leak check included · Essential Service, usually around the six-month mark · Pre-summer A/C performance check. 15% off parts.
The free 30-point checkup, at every visit
Every Cool Care visit includes the free 30-point A/C and electrical checkup: system pressures, vent temperature, compressor clutch and cycling, the cabin filter, and battery and charging checks, with a written report.
Compare all five plansIllustrative image. Not a photograph of GM premises, staff or a customer vehicle.
Plans are arranged over WhatsApp or at the counter, there is no online checkout. Full scope for each plan is on the Cool Care plans page.
Tell us what the car is doing
Pick a day and a time and send a slot request. We confirm it by phone or WhatsApp in workshop hours. The 30-point A/C and electrical checkup is free, takes 15 to 35 minutes and comes with a written report. Nothing is charged and no work starts without your approval.
Customer Service · Individual car owners. Mon–Sat 10:00 AM – 8:00 PM, Sunday closed. Prefer not to call? The form takes about 30 seconds.
Illustrative image. Not a photograph of GM premises, staff or a customer vehicle.
Before you book
Is the checkup really free, or is there a diagnosis charge?
The A/C, electrical and general checkup is free, with nothing to pay and no obligation to have the work done. We inspect first, explain what we found, and share the estimate before any paid work starts. It takes 15 to 35 minutes on a booked slot and you leave with a written report. Call +91 88893 60888 to book a slot.
What is the A/C Gas + Airflow Refresh?
Gas filling with a leak check, plus the cabin filter and vent airflow service. What it costs depends on the car: one with front and rear A/C takes more gas, and a cabin filter we have to order for the model costs more than one we stock. The counter confirms the total before the work starts.
How much does car AC gas filling cost in Chennai?
It depends on how much gas has gone, whether there is a leak to repair first, and whether your car has one A/C module or two. We run the free 30-point checkup, then give you the figure in writing before any paid work. Call +91 88893 60888 and we can tell you what your car is likely to need.
Why is my car AC not cooling properly?
Poor car AC cooling can result from low refrigerant, a gas leak, a cabin-filter restriction, compressor, condenser, cooling-coil or electrical faults. GM Car A/C Service diagnoses the fault before recommending repair work. See what causes weak A/C cooling
How are repair estimates confirmed?
For compressor, cooling-coil, electrical and general-service repairs, the recommended work and estimate are confirmed after diagnosis because vehicle condition and parts requirements vary.
How long will my car A/C repair take?
Repair timing depends on the diagnosed fault, vehicle and parts required. GM confirms the expected timeline after diagnosis before approved work begins. Book an appointment or call +91 88893 60888 to discuss your car.
Is pickup and drop available in Chennai?
Free pick-up and drop anywhere in Chennai, on confirmed bookings, subject to slot availability across Chennai. Call +91 88893 60888 or WhatsApp GM Car A/C Service to confirm availability and timing for your location and service need.
Which car brands do you service?
GM Car A/C Service is an independent multibrand workshop in Ambattur, Chennai. Share your vehicle model and service concern when you contact GM so the team can confirm the appropriate diagnosis and service. Explore the service options or call +91 88893 60888.
Serving north and west Chennai from Ambattur
The workshop is at 12A, Gangai Amman Kovil Street, Kallikuppam, Ambattur. These pages cover what we see most often in each area.