EngineCritical
AFM/DFM lifter failure with tick and misfire.
Major mechanical repair£800–£2,500
Inspect · Listen for lifter tick and scan for misfire codes.
2015–2020 GMC Yukon · common fault repair costs
What the known faults on this GMC Yukon typically cost to put right at a UK independent garage · use the figures to price risk before you bid, and to justify a reduction when something shows up on inspection.
Cost at a glance
- Most expensive fault
- £800–£2,500
- Top three risks, from
- £1,300
- Worst case, everything
- £8,150
The single priciest documented job on the 2015–2020 GMC Yukon is major mechanical repair at £800–£2,500. Few cars need every repair listed here · treat £2,150–£8,150 as the full exposure if one arrived with all of them.
Cost per fault
SuspensionHigh
Extremely harsh ride and bouncing due to Magnetic Ride Control (Magneride) shock absorber failure.
Suspension refresh (per axle)£250–£1,100
Inspect · Look behind the wheels at the shock absorbers for heavy oil residue. Push down firmly on the front wings; a lack of rebound or excessive stiffness indicates failed, locked-up dampers.
Climate ControlMedium
Air conditioning blows warm air due to a cracked weld on the A/C condenser causing refrigerant loss.
Suspension refresh (per axle)£250–£1,100
Inspect · Start the engine and set the A/C to maximum cold. Shine a torch through the front grille to look for dark, oily patches on the condenser fins, which confirm a leak.
BrakesHigh
Hard brake pedal and loss of braking assistance at low speeds caused by mechanical vacuum pump failure.
Brakes (discs, pads, caliper)£200–£800
Inspect · Start the engine and pump the brake pedal several times rapidly at idle. If the pedal becomes rock hard and loses servo assistance during these low-speed manoeuvres, the pump is failing.
ElectricalMedium
Partial or complete failure of the rear LED taillight clusters due to moisture ingress or burnt-out strips.
Brakes (discs, pads, caliper)£200–£800
Inspect · Turn on the headlamps and have an assistant press the brake pedal. Check both rear light clusters to ensure the entire red LED perimeter illuminates evenly without dim patches. This is an MOT failure.
EngineHigh
Oil consumption from AFM.
Oil leak trace & seal / gasket£180–£700
Inspect · Check oil level and consumption history.
TransmissionMedium
Automatic shudder / harsh shifts.
Routine repair£180–£700
Inspect · Feel for shudder on light throttle.
InteriorLow
Cracked dashboard.
Interior trim repair£90–£450
Inspect · Inspect the dash top for cracks.
Ranges are indicative parts-and-labour costs at a UK independent garage, inclusive of VAT. Franchised dealers typically sit 40–80% higher, and prestige or electrified variants sit at the top of each band. Always get a written quote before committing.
Inspecting a GMC Yukon this week?
Build a tickable checklist for the exact car in front of you, record faults with photos, and hand the buyer a report.