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GMC Auto Repairs

48 Cloyfin Road


BT52 2NY


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We now accept card payments

What is Diagnostics ?

All cars are now fitted with computers of all kinds with technology to run and monitor the internal workings of the vehicle. One of the most important functions these computers provide is ensuring your car is operating within it's manufactured parameters, the engine, safety systems (ABS, Anti-Slip etc. etc.) are all operating correctly and safely.

Most people usually only become aware of the functions of these computers when one of the fault warming indicators illuminates on the dashboard (there are usually at least an Engine warning light, an ABS warning light and an Oil Pressure warning light), and consult the vehicle owners manual to read "proceed to an authorized dealer as soon as possible"

Often the warning light will indicate a fault that could be corrected by simply turning the ignition off, waiting a moment and re-starting the car. However, there was clearly a reason the light illuminated.

At GMC Auto Repairs Coleraine we currently use the best diagnostic tool available on the market. It is equipped with software capable of diagnosing electrical faults and reading engine management fault codes on almost every vehicle.

Our Services

We also provide professional assistance on the following services :

MOT Service Brakes Battery Air Conditioning Clutches Timing Belts Exhausts Used Car Sales


For Sale

Service & Repair

MOT Checks



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