Ambattur workshopMon–Sat 10:00 AM – 8:00 PM. Sunday closed.

GM Car A/C ServiceAmbattur, Chennai

Ayudha Pooja Offer: 7.5% Back on Your Loyalty Card

This Ayudha Pooja, 7.5% of the labour charge on your bill comes back to you as credit on your GM Loyalty Card. The usual rate is 5%. It is our thank you for trusting us with your car.

Reviewed by G.M. Manigandan, founder and lead technician · Last reviewed

Mon–Sat 10:00 AM–8:00 PM, Sunday closed · Kallikuppam, Ambattur

One technician works down a checklist on a clipboard while another checks a cabin vent temperature inside a car with its door open.
Illustrative image. Not a photograph of GM premises, staff or a customer vehicle.

What you get

Every time you pay a GM bill, part of the labour charge goes back onto your Loyalty Card as credit. Normally that is 5%. For bills dated 15 October to 31 October 2026, we raise it to 7.5%.

The credit is worked out on the labour charge before GST. Once the bill is fully paid, the credit is added to your card overnight.

How it works

  1. Book a free 30-point checkup.
  2. We give you a written estimate.
  3. You approve it.
  4. We do the work.
  5. You pay the bill.
  6. The credit lands on your card overnight.

Book the free 30-point checkup

Using your credit

Your credit is used on your next visit. Our staff apply it at billing, so just tell us at the counter. It stays valid for 6 months from the day you earn it. It is never paid out as cash.

Every customer already has a card. Your card number is printed on your GM bill. To see your balance, go to my.gmcaracservice.com/card and enter your phone number and card number.

The small print, in plain words

  • Private cars only. Fleet and business accounts are not included.
  • Parts earn nothing. Only the labour charge counts.
  • If the bill has a discount, the labour it is earned on goes down by that discount.
  • The bill must be dated 15 October to 31 October 2026 and fully paid.
  • The offer applies at both our workshops, Ambattur and Surapet.

Both our workshops, Ambattur and Surapet, are closed on Monday 19 October for Ayudha Pooja, and on Sundays. We are open again on Tuesday 20 October.

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How diagnosis works

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.

  1. 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.

  2. 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.

  3. 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.

  4. Repaired, then checked again

    The approved work is done and the car is checked again before handover.

Questions about this service

Frequently asked questions

How much credit will I get this Ayudha Pooja?

7.5% of the labour charge on your bill, before GST. The normal rate is 5%. If the bill carries a discount, the labour charge the credit is earned on goes down by that discount.

Which bills qualify, and when does the credit arrive?

Bills dated 15 October to 31 October 2026. The credit is added to your GM Loyalty Card overnight, once the bill is fully paid. Both our workshops, Ambattur and Surapet, are closed on Monday 19 October for Ayudha Pooja and on Sundays, and open again on Tuesday 20 October.

How do I use the credit?

On your next visit. Our staff apply it at billing. It stays valid for 6 months from the day you earn it, and it is never paid out as cash.

Do parts, fleet cars or business accounts earn the credit?

No. Parts earn nothing, only the labour charge counts. The offer is for private cars only, so fleet and business accounts are not included.

Where is my card number, and how do I check my balance?

Every customer already has a card. The card number is printed on your GM bill. To check your balance, go to https://my.gmcaracservice.com/card and enter your phone number and card number.

More questions about booking, pick-up and estimates

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Book a slot

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.

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Illustrative image. Not a photograph of GM premises, staff or a customer vehicle.

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Pick-up and drop

Free pick-up and drop anywhere in Chennai, on confirmed bookings, subject to slot availability.

Returning-customer and referral codes are accepted. Ask at billing if you do not have one.
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