2015 GMC YUKON DENALI VIN 1GKS2CKJ5FR701085

The GMC Yukon Denali described here left the factory in 2015. The gearbox is automatic, with four-wheel drive. The engine is a 6.2-litre petrol unit with eight cylinders. Details for this car come from a single data source and may differ from its documents.

The clock stood at 155,414 miles when the data was entered. The figure is in miles and needs converting before it is compared with kilometres: one mile is about 1.6 km. A single figure proves little: what makes a mileage believable is a series of readings that rise steadily over the years. A service book or a folder of workshop invoices is the simplest place to find past readings.

When the car was recorded, it showed damage to both front and rear. Two cars with the same damage label can be very different: one needs a few new parts, the other major work. Whatever the cause, a diagnostic scan of the car’s electronics shows fault codes that a visual check misses.

As a non-runner, the car needs its engine, gearbox and electrics assessed before anything else. An engine that will not start could have a simple electrical fault or internal damage, and only diagnostic work can tell which. A key was there when the car was checked. Condition notes are a snapshot: the car may have been worked on, stripped of parts or left standing since.

Title status in the record: no title, transfer document only. Without a title certificate, registering the car can take extra paperwork and checks.

Registrations, changes of owner, inspection results and accident claims together make up what is called a car’s history. No single office holds the whole story of a car: registries, workshops, insurance companies and lenders each keep their own part. From the outside, a car with a repaired accident and a car without one can look identical.

When a car does not run, a compression test and the condition of the oil tell a mechanic whether the engine can be brought back to life. Many modern petrol engines are turbocharged and direct-injected; where they are, the turbocharger and injectors belong on a specialist’s checklist. On a car that does not run, the automatic gearbox cannot be judged on the road; the colour and smell of its fluid and a diagnostic scan give the first clues. Drive to all four wheels means more to maintain: differentials and couplings have oil of their own, which some manufacturers want changed at set intervals.

The ninth character of the VIN is a check digit calculated from the other sixteen, so a mistyped or invented number does not add up. This car’s identification number is 1GKS2CKJ5FR701085.

A VIN report gathers what different sources know about a car, such as the number of owners, mileage readings, damage and any branded title. Paperwork is only as complete as the people who kept it, so a report with few entries lowers the risk without removing it. A VIN check and a physical inspection answer different questions: the first says what happened to the car, the second what condition it is in now. Before going any further with this GMC Yukon Denali, it makes sense to look up VIN 1GKS2CKJ5FR701085.