EngineCritical
AFM/DFM lifter failure with tick and misfire.
- Typically appears
- 80,000+ miles
- What to inspect
- Listen for lifter tick and scan for misfire codes.
2015–2020 Chevrolet Suburban · common problems & known faults
The 11th-gen Suburban shares the 5.3L V8 with the Tahoe, so the AFM lifter and oil-consumption checks are identical.
Compiled & reviewed by the VehicleFaults Research Team · last reviewed July 2026
Quick answer
The most commonly reported faults on the 2015–2020 Chevrolet Suburban are AFM/DFM lifter failure with tick and misfire, Oil consumption from AFM cylinders and Harsh ride, knocking over bumps, and visible fluid weeping from MagneRide dampers. Of the documented issues, 1 rated critical and 3 rated high · these are the ones worth inspecting first. Full inspection points, onset mileage and what to check are listed below.
Turn these known faults into a step-by-step viewing plan for this exact Chevrolet Suburban · $9.
Build the inspection planReliability snapshot
Based on the documented faults on this page for the Chevrolet Suburban.
3.2/ 10
- Critical
- 1
- High
- 3
- Medium
- 2
- Low
- 2
Guidance only · reflects reported patterns, not a specific car's condition.
Known faults to check
EngineHigh
Oil consumption from AFM cylinders.
- Typically appears
- 70,000+ miles
- What to inspect
- Check oil level and top-up history.
Turn these known faults into a step-by-step viewing plan for this exact Chevrolet Suburban · $9.
Build the inspection planTransmissionMedium
Automatic shudder / harsh shifts.
- Typically appears
- 90,000+ miles
- What to inspect
- Feel for shudder on light throttle.
HVACLow
Rear climate and blend-door faults.
- Typically appears
- Age-related
- What to inspect
- Test front and rear climate zones.
SuspensionHigh
Harsh ride, knocking over bumps, and visible fluid weeping from MagneRide dampers.
- Typically appears
- 50,000-80,000 miles
- What to inspect
- Bounce the front and rear corners to check damping. Look behind the wheels with a torch for dark, oily residue on the shock absorber bodies.
BrakesHigh
Exceptionally hard brake pedal at low speeds or during parking manoeuvres due to mechanical vacuum pump failure.
- Typically appears
- 40,000-70,000 miles
- What to inspect
- Start the engine, pump the brake pedal several times at idle, and engage drive. The pedal should remain assisted and not go rock-hard.
Body/InteriorMedium
Damp headlining near the interior mirror or water dripping from the overhead console due to a failed roof antenna seal.
- Typically appears
- 4-6 years
- What to inspect
- Press firmly around the base of the roof antenna to check for play. Inspect the headlining around the overhead console and sun visors for water staining.
InteriorLow
Visible hairline cracks in the dashboard plastic, usually starting near the passenger airbag or instrument cowl.
- Typically appears
- 5-7 years
- What to inspect
- Shine a torch across the top of the dashboard, paying close attention to the corners of the passenger airbag cutout and the instrument binnacle.
Inspecting a Chevrolet Suburban?
Build a tickable plan for the viewing · where to look, what a bad result means and what to ask the seller. One-off price $9.
Build my inspection planFrequently asked questions
Is the Suburban reliable?
Durable overall, but budget for the 5.3L AFM lifter risk.
How much to fix lifters?
Lifter and cam repairs are labour-intensive and can run into thousands; check history.
Is the Suburban good for towing?
Yes — strong ratings; confirm the tow package and cooling.
What should I look out for regarding the Magnetic Ride Control suspension?
The MagneRide dampers are notorious for leaking fluid and failing prematurely, leading to an extremely harsh ride and MOT failure. Replacement units are highly expensive. Always inspect the shock absorbers for oily residue and take the vehicle over uneven surfaces to check for excessive bouncing or knocking noises.
Are there any common electrical issues with the infotainment system?
Yes, the central touchscreen frequently suffers from digitiser failure. This manifests as a completely unresponsive screen, ghost touches, or spider-web cracking beneath the glass. A full replacement of the screen module is often required, so dealers must test all touch functions and physical buttons during the forecourt appraisal.
Does the 5.3L V8 engine suffer from exhaust manifold issues?
It is a known issue on the 5.3L V8 for the exhaust manifold bolts to snap, particularly on the rearmost cylinders. This causes a distinct ticking noise on a cold start that fades as the engine warms up. Extracting broken bolts from the cylinder head is labour-intensive and costly.
Sources & further reading
Faults are compiled from documented recalls, technical bulletins, owner reports and mechanic sources, then reviewed for accuracy. This is guidance only · not a substitute for a professional inspection.
More Chevrolet models
Buying a Chevrolet Suburban? Build a step-by-step viewing plan for this exact car · $9.
Build the plan