95 Pontiac Bonneville SE - Dashboard Oil Pressure Display

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Subject: 95 Pontiac Bonneville SE
Mileage: 184941
Engine Type: 3800 Series II – V6 Engine
Problem[s]: Dashboard Oil Pressure Display descends and displays the indicator needle in the red zone whenever the car is stopped/paused at a red light. And or sometimes when the car is on and in the park position. However, when the car proceeds at virtually any speed it correctly adjusts to readout of 40.
Problem: Antilock brake light occasionally appears on the dash and remains neither lit and despite any need nor use of such braking system/solution to be required.
Problem: Freon level in and versus air conditioning/cooloing system shows as full. Blower is fully operational furthermore. Yet no cold air is being forwarded through.