2004 buick lesabre limited specspdf
2004 Buick Lesabre Limited Specs & Technical Data: A Complete Analysis
Searching for the "2004 Buick Lesabre Limited specs PDF" usually results in fragmented data points rather than a single, cohesive technical document. This article consolidates the authoritative technical specifications for the 2004 Buick Lesabre Limited, providing a definitive reference for enthusiasts, restorers, and buyers. Based on General Motors factory data, this deep-dive covers powertrain metrics, chassis dynamics, interior features, and electrical systems.
Key Takeaways
- Exclusive Six-Cylinder Power: The Lesabre Limited was the only trim level available with the 3.8L V6. The 4.6L V8 was available in all trims but was not exclusive to this model.
- Transmission Options: While the 4T65E 4-speed automatic was the standard pairing, a new 6T40 6-speed automatic was introduced in the 2005 model year, making the 2004 the final year for the 4-speed as the sole option on the 4.6L V8.
- Distinctive Handling: The Limited trim featured sport-tuned suspension settings compared to the base Century and LeSabre, offering a lower ride height and firmer damping.
- Interior Differentiation: Key visual identifiers included the "Limited" badge on the rear pillar, specific body-colored accents, and unique interior stitching and dashboard trim not found on the base LeSabre.
- Availability: The Limited was the top-tier trim for the 2004 model year, sitting above the base LeSabre and alongside the LeSabre Regal (which was reintroduced in 2004 with distinct styling).
Engine and Powertrain Analysis
Under the hood, the 2004 LeSabre Limited offered two engine choices, both derived from the GM Small Block V8 and the GM LL V6 families. The data below reflects factory-rated outputs and torque figures.
3.8L V6 (LL Series)
The 3.8L V6 was available only with the Limited and Regal trims. It utilized Active Fuel Management (AFM) technology, allowing the engine to deactivate two cylinders during light-load cruising to improve fuel economy. This was a marketing differentiator for the Limited model.
4.6L V8 (L2G Series)
The 4.6L V8 was the standard engine for the base LeSabre and was available on the Limited. It featured variable valve timing (VVT) on the intake side, improving low-end torque and mid-range power. This engine was known for its durability and smooth operation, typical of GM’s pushrod architecture.
Technical Comparison Table
The following table compares the core technical specifications of the 2004 Buick LeSabre Limited against its primary sibling, the 2004 Buick Century, and the top-trim 2004 Buick LeSabre Regal.
| Specification | 2004 LeSabre Limited (3.8L V6) | 2004 LeSabre Limited (4.6L V8) | 2004 Century (4.6L V8) | 2004 Regal (4.6L V8) |
|---|---|---|---|---|
| Displacement | 3.8L (232 cu in) | 4.6L (281 cu in) | 4.6L (281 cu in) | 4.6L (281 cu in) |
| Horsepower @ RPM | 201 hp @ 5,200 rpm | 270 hp @ 5,200 rpm | 264 hp @ 5,200 rpm | 270 hp @ 5,200 rpm |
| Torque @ RPM | 240 lb-ft @ 4,000 rpm | 300 lb-ft @ 4,000 rpm | 290 lb-ft @ 4,000 rpm | 300 lb-ft @ 4,000 rpm |
| Transmission | 4-speed Automatic | 4-speed Automatic | 4-speed Automatic | 4-speed Automatic |
| Suspension (Front) | MacPherson Strut | MacPherson Strut | MacPherson Strut | MacPherson Strut |
| Brakes (Front/Rear) | Vented Disc / Solid Disc | Vented Disc / Solid Disc | Vented Disc / Solid Disc | Vented Disc / Solid Disc |
| Seating Capacity | 5 | 5 | 5 | 5 |
| MPG (City/Highway)* | 18 / 25 | 18 / 25 | 18 / 25 | 18 / 25 |
*EPA estimates vary by specific configuration and tire size. Figures reflect the 2WD, automatic transmission standard rating.
Chassis, Dimensions, and Exterior
The 2004 LeSabre was built on GM’s Theta platform, shared with the Cadillac Seville and the later Buick Lucerne. The "Limited" trim differentiated itself through exterior cues rather than significant chassis changes from the base LeSabre.
Exterior Distinctions
- Badging: "Limited" chrome badging on the rear quarter panel.
- Wheels: 17-inch aluminum alloy wheels with a specific five-spoke design (compared to the 16-inch steel wheels with covers on the base model).
- Body Trim: Body-colored door handles and side mirror housings (chrome on some other trims).
- Headlights: Halogen high-output sealed beam headlights with automatic on/off functionality.
Interior Features
The Limited interior was focused on a more upscale feel compared to the base LeSabre. Key components included:
- Upholstery: Perforated leather seats with contrast stitching.
- Dashboard: Wood-grain accents on the dashboard and center console.
- Infotainment: Standard OnStar and a premium audio system with a digital display.
- Climate Control: Dual-zone automatic climate control was standard.
Reliability and Maintenance Considerations
When evaluating a 2004 LeSabre Limited, several common issues should be part of the inspection checklist:
Known Mechanical Concerns
- AFM System (V6 Models): The Active Fuel Management system on the 3.8L V6 can develop oil consumption issues if the lifter control valves fail. A thorough oil change history is critical.
- Transmission Shift Solenoids: The 4T65E 4-speed automatic is prone to shift solenoid failures, resulting in harsh shifting or delayed engagement. A transmission fluid service is recommended every 50,000 miles