The 6.2-liter V8 GM L86 engine was produced by the American concern from 2013 to 2020 and was installed on popular pickup trucks and SUVs such as the Chevrolet Tahoe or Cadillac Escalade. An updated modification of such a power unit is known under its own index L87.
Vortec family: LR4, LM7, LY2, LY5, LFA, L92, L86, L83, L87.
Specifications
| Production years | 2013-2020 |
| Displacement, cc | 6162 |
| Fuel system | direct injection |
| Power output, hp | 409 – 426 |
| Torque output, Nm | 610 |
| Cylinder block | aluminum V8 |
| Block head | aluminum 16v |
| Cylinder bore, mm | 103.25 |
| Piston stroke, mm | 92 |
| Compression ratio | 11.5 |
| Features | OHV |
| Hydraulic lifters | yes |
| Timing drive | chain |
| Phase regulator | yes |
| Turbocharging | no |
| Recommended engine oil | 0W-20 |
| Engine oil capacity, liter | 7.6 |
| Fuel type | petrol |
| Euro standards | EURO 5 |
| Fuel consumption, L/100 km (for Chevrolet Tahoe 2017) — city — highway — combined |
18.3 10.6 13.4 |
| Engine lifespan, km | ~300 000 |
| Weight, kg | 241 |
The engine was installed on:
- Cadillac Escalade 4 (GMTK2XL) in 2014 – 2020;
- Chevrolet Silverado 3 (GMTK2RC) in 2013 – 2019;
- Chevrolet Suburban 11 (GMTK2YC) in 2014 – 2020;
- Chevrolet Tahoe 4 (GMTK2UC) in 2014 – 2020;
- GMC Sierra 4 (GMTK2RG) in 2013 – 2019;
- GMC Yukon 4 (GMTK2UG) in 2014 – 2020;
- GMC Yukon XL 4 (GMTK2YG) in 2014 – 2020.
Disadvantages of the GM L86 engine
- The main problem here is the sticking of the hydraulic lifters and the wear of the camshaft.
- The cause can be either bad oil or a broken hydraulic lifter cassette.
- On specialized forums, they complain about weak valve springs, sometimes they simply burst.
- Monitor the condition of the pump and radiators, as the motor is very afraid of overheating.
- Oil consumption is also regularly encountered due to poor crankcase ventilation.
Frequently asked questions about the GM L86
How much power does the GM L86 make?
The GM L86 develops 409 - 426 hp and 610 Nm of torque.
How much oil does the GM L86 take and which one?
Engine oil capacity: 7.6 liters. Recommended oil: 0W-20.
Does the GM L86 have a timing belt or chain?
The GM L86 uses a timing chain.
Is the GM L86 turbocharged?
No, the GM L86 is naturally aspirated.
Does the GM L86 need valve clearance adjustment?
No, the GM L86 has hydraulic lifters, so the valve clearances do not need to be adjusted.
How long does the GM L86 last?
The typical lifespan of the GM L86 is ~300 000 km with proper maintenance.
What is the fuel consumption of the GM L86?
Chevrolet Tahoe 2017: city 18.3, highway 10.6, combined 13.4 L/100 km.
What cars was the GM L86 installed on?
Cadillac Escalade 4 (GMTK2XL) in 2014 - 2020; Chevrolet Silverado 3 (GMTK2RC) in 2013 - 2019; Chevrolet Suburban 11 (GMTK2YC) in 2014 - 2020; Chevrolet Tahoe 4 (GMTK2UC) in 2014 - 2020; GMC Sierra 4 (GMTK2RG) in 2013 - 2019; GMC Yukon 4 (GMTK2UG) in 2014 - 2020 and 1 more (see the full list above).
What are the common problems of the GM L86?
The main problem here is the sticking of the hydraulic lifters and the wear of the camshaft. The cause can be either bad oil or a broken hydraulic lifter cassette. All known problems.
