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 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
- 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.
Frequently asked questions about the GM L32
How much power does the GM L32 make?
The GM L32 develops 260 hp and 380 Nm of torque.
How much oil does the GM L32 take and which one?
Engine oil capacity: 4.3 liters. Recommended oil: 5W-30.
Does the GM L32 have a timing belt or chain?
The GM L32 uses a timing chain.
Is the GM L32 turbocharged?
Yes, the GM L32 is turbocharged (Eaton M90).
Does the GM L32 need valve clearance adjustment?
No, the GM L32 has hydraulic lifters, so the valve clearances do not need to be adjusted.
How long does the GM L32 last?
The typical lifespan of the GM L32 is ~300 000 km with proper maintenance.
What is the fuel consumption of the GM L32?
Pontiac Grand Prix 2005: city 14.7, highway 9.8, combined 12.4 L/100 km.
What cars was the GM L32 installed on?
Pontiac Grand Prix 8 (GMX367) in 2003 - 2007.
What are the common problems of the GM L32?
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. All known problems.
