Oil light came back on and stays on after oil change?

Tiny
JRTEMP99
  • MEMBER
  • 1996 BUICK ROADMASTER
  • 5.7L
  • V8
  • 2WD
  • AUTOMATIC
  • 13,200 MILES
Oil light came back on and stays on after oil change?
Thursday, August 3rd, 2023 AT 11:22 AM

1 Reply

Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 42,959 POSTS
Is this the oil pressure light or oil change light? If it is the latter here is how to reset it:

ENGINE OIL LIFE MONITOR
After changing engine oil, reset the engine oil life monitor whether the "CHANGE OIL" warning/indicator lamp came on or not.

Reset monitor as follows:

1. Turn the ignition switch to "on" position, but don't start the engine.
2. Fully depress accelerator pedal to Wide Open Throttle (WOT) position and release it three times within five seconds.
The light is controlled by the Powertrain Control Module (PCM). The PCM is monitoring the TPS signal for 3 consecutive signals above 96%. The PCM will acknowledge, if the reset was successful, by flashing the "Change Oil" light twice, then turning off the light.
3. If "CHANGE OIL" warning/indicator lamp flashes then goes out, the system has been reset.
4. If "CHANGE OIL" warning/indicator lamp doesn't reset, turn ignition switch "OFF" and repeat procedure.
If "CHANGE OIL" light is inoperative or remains "ON, " refer to Powertrain Management / Computerized Engine Controls / Testing Procedures section.

Please let us know what happens.
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Thursday, August 3rd, 2023 AT 4:35 PM

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