Engine GM L32

The General Motors L32 3.8-liter compressor V6 engine was produced from 2003 to 2007 and was installed only on the 8th generation Pontiac Grand Prix sedans in GT and GTP modifications. There was a naturally aspirated version of this engine under the symbol L26 with a power of 200 hp / 310 Nm.

Buick V6 engine family: L32, L36, L67.


Production years 2003 – 2007
Displacement, cc 3791
Fuel system distributed injection
Power output, hp 260
Torque output, Nm 380
Cylinder block cast iron V6
Block head cast iron 12v
Cylinder bore, mm 97
Piston stroke, mm 86
Compression ratio 8.5
Features OHV
Hydraulic lifters yes
Timing drive chain
Phase regulator no
Turbocharging Eaton M90
Recommended engine oil 5W-30
Engine oil capacity, liter 4.3
Fuel type petrol
Euro standards EURO 3/4
Fuel consumption, L/100 km (for Pontiac Grand Prix 2005)
— city
— highway
— combined
Engine lifespan, km ~300 000
Weight, kg 198

The engine was installed on:

  • Pontiac Grand Prix 8 (GMX367) in 2003 – 2007.

Disadvantages of the GM L32 engine

  • The main problem of its predecessors in the form of frequent antifreeze leaks has been corrected.
  • Instead of a weak plastic intake manifold, a strong aluminum one is installed.
  • However, plastic coolant pipes still burst regularly.
  • It is important to keep the cooling system clean; this engine is prone to overheating.
  • The spark plugs, ignition coils, crankshaft position sensor and mass air flow sensor are also characterized by a low resource.

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