What are the most common Buick LeSabre problems?

According to Au7o's research across NHTSA recalls, manufacturer TSBs, and owner forum reports, the 1999 Buick LeSabre has 2 documented issues. The most frequently reported are: Transmission Gear State May Differ From PRNDL (Recall 99V089), Fuel Pressure Regulator Can Leak and Cause Fire (Recall 04V090). Of these, 2 are rated critical and should be addressed promptly.

What is the 1999 Buick LeSabre Transmission Gear State May Differ From PRNDL (Recall 99V089)?

NHTSA Recall 99V089 covers certain 1999 Buick LeSabre vehicles equipped with the 4T65E automatic transmission. A retaining clip can loosen during certain shifting maneuvers and let the transmission-detent linkage disconnect from the manual valve. The indicated PRNDL position can… Severity: high.

What is the 1998-2000 Buick LeSabre Fuel Pressure Regulator Can Leak and Cause Fire (Recall 04V090)?

GM Recall 03054B, NHTSA 04V090, covers certain 1998-2000 Buick LeSabre vehicles with the 3.8L V6 L36 engine and affected fuel-pressure regulators. A leaking diaphragm can send fuel through a vacuum line into the intake manifold. During a failed start with a low battery, the fuel… Severity: high.

Buick · Known Issues

1999 Buick LeSabre Problems: 2 Known Issues

1999 model year · NHTSA recalls, manufacturer TSBs, and owner forum reports · Updated August 2026

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According to Au7o's research across NHTSA recalls, manufacturer TSBs, and owner forum reports, the 1999 Buick LeSabre has 2 documented known issues, with 2 rated critical. The most serious are Transmission Gear State May Differ From PRNDL (Recall 99V089) and Fuel Pressure Regulator Can Leak and Cause Fire (Recall 04V090). DIY maintenance guides at au7o.io.

1999 Buick LeSabre Problems: 2 Known Issues

All 2 Known Issues

1999 Buick LeSabre: Transmission Gear State May Differ From PRNDL (Recall 99V089)#

Common Symptoms

How to Fix

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1998-2000 Buick LeSabre: Fuel Pressure Regulator Can Leak and Cause Fire (Recall 04V090)#

Common Symptoms

How to Fix

Research This Issue

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Frequently Asked Questions

What are the most common Buick LeSabre problems?

Is the Buick LeSabre reliable?

What is the 1999 Buick LeSabre Transmission Gear State May Differ From PRNDL (Recall 99V089)?

What is the 1998-2000 Buick LeSabre Fuel Pressure Regulator Can Leak and Cause Fire (Recall 04V090)?