1990 Pontiac Bonneville Problems

RepairPal has identified the most common problems with the 1990 Pontiac Bonneville as reported by actual vehicle owners. We'll tell you what the problem is and what it'll take to fix it.

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20
Known Problems

The high pressure power steering hose will commonly leak fluid; it should be replaced.

The front struts may show signs of wear, or be excessively bouncy ride at freeway speeds. This may begin to occur at around 75,000 miles.

The Engine Control Module (ECM) can fail causing stalling, and engine and transmission drivability concerns.

Brake fluid can become dirty and may cause problems in the brake system; it should be flushed every 60,000 miles.

The anti-lock brake (ABS) accumulator may fail causing loss of power brake assist. (The brake pedal will become very hard.)