Only the eighth generation Pontiac Grand Prix sedans with GT and GTP modifications were equipped with the General Motors L32 3.8-liter compressor V6 engine, which was manufactured between 2003 and 2007. An engine with 200 horsepower and 310 Nm of power that was naturally aspirated was known as the L26.
Buick V6 engine family: L32, L36, L67.
Specifications
| 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 |
14.7 9.8 12.4 |
| 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
Its predecessors’ primary issue, which was frequent antifreeze leaks, has been fixed.
A sturdy aluminum intake manifold is installed in place of a flimsy plastic one.
Plastic coolant pipes still frequently burst, though.
This engine is prone to overheating, so it’s critical to maintain a clean cooling system.
Low resources are also present in the spark plugs, ignition coils, crankshaft position sensor, and mass air flow sensor.