Oil Change Light Does Not Flash
Thread Starter
Instructor
Joined: Jul 2020
Posts: 196
Likes: 14
From: Houston Texas
Oil Change Light Does Not Flash
1990 C4 Corvette Automatic
I noticed that my Change Oil light came on recently. I changed the oil about 3 months ago. I did not know to reset the light then, and since it was not on, I went on about life.
Now, the light is on. I followed the procedure - from this forum site, below:
1. Turn the key to RUN, but don’t start the engine.
2. Press ENG MET on the Trip Monitor. Then, within
five seconds, press it again.
3. Within five seconds, press and hold GAUGES on the
Trip’Monitor. The CHANGE OIL light should flash.
4. Hold the GAUGES button until the CHANGE OIL
light stops flashing and goes out. This should take
about ten seconds.
My Change Oil light never flashes. I counted twenty eight (28) attempts, and the Change Oil light did not flash, nor did it turn off. So, for those of you with this extended problem of the light not flashing, and if you fixed the problem, please share how you got the light to turn off.
Thanks in advance
I noticed that my Change Oil light came on recently. I changed the oil about 3 months ago. I did not know to reset the light then, and since it was not on, I went on about life.
Now, the light is on. I followed the procedure - from this forum site, below:
1. Turn the key to RUN, but don’t start the engine.
2. Press ENG MET on the Trip Monitor. Then, within
five seconds, press it again.
3. Within five seconds, press and hold GAUGES on the
Trip’Monitor. The CHANGE OIL light should flash.
4. Hold the GAUGES button until the CHANGE OIL
light stops flashing and goes out. This should take
about ten seconds.
My Change Oil light never flashes. I counted twenty eight (28) attempts, and the Change Oil light did not flash, nor did it turn off. So, for those of you with this extended problem of the light not flashing, and if you fixed the problem, please share how you got the light to turn off.
Thanks in advance
Team Owner
Joined: Sep 2003
Posts: 25,414
Likes: 2,745
This is from a '90 FSM @ 8D-9. Do you have a '90 FSM for your car? Step 3 seems different!
........................................ ........................................ ........................................ ...................................
RESETTING "CHANGE OIL" INDICATOR
The ~~Change Oil" indicator is reset by using a
sequence of Driver Information Center (DIC)
keypresses as follows:
1. Turn ignition ~~ON," but do not start engine.
(ALDL pin ~~G" should NOT be grounded.)
2. Press the ~~ENG/MET" button and release, then,
within 5 seconds, press it again.
3. Within 5 seconds of Step 2, press and hold the
~~RANGE" button. While the button is held, the
~~ChangeOil" indicator will flash.
4. Continue holding the ~~RANGE" button until the
~~ChangeOil" indicator stops flashing and goes out,
indicating successful completion of the reset cycle.
This should take about 10 seconds. If it does not
successfully reset, turn ignition ~~OFF" and repeat
the procedure from Step 1.
........................................ ........................................ ........................................ ...................................
RESETTING "CHANGE OIL" INDICATOR
The ~~Change Oil" indicator is reset by using a
sequence of Driver Information Center (DIC)
keypresses as follows:
1. Turn ignition ~~ON," but do not start engine.
(ALDL pin ~~G" should NOT be grounded.)
2. Press the ~~ENG/MET" button and release, then,
within 5 seconds, press it again.
3. Within 5 seconds of Step 2, press and hold the
~~RANGE" button. While the button is held, the
~~ChangeOil" indicator will flash.
4. Continue holding the ~~RANGE" button until the
~~ChangeOil" indicator stops flashing and goes out,
indicating successful completion of the reset cycle.
This should take about 10 seconds. If it does not
successfully reset, turn ignition ~~OFF" and repeat
the procedure from Step 1.
Thread Starter
Instructor
Joined: Jul 2020
Posts: 196
Likes: 14
From: Houston Texas
I press the 'Range' button. I have a 1990 C4
So, please tell me what the fix is, please.
I press the Eng Met button, release, press it again, and then press the 'Range' Button. The Change Oil light in the dash does not flash.
So, please tell me what the fix is, please.
I press the Eng Met button, release, press it again, and then press the 'Range' Button. The Change Oil light in the dash does not flash.
Thread Starter
Instructor
Joined: Jul 2020
Posts: 196
Likes: 14
From: Houston Texas
The Change Oil light remains 'On'
The Change Oil light remains on.
I press the Eng/Met button, release, press it again, and then press and hold the 'Range' Button. The Change Oil light in the dash does not flash.
The Change Oil light remains on.
I press the Eng/Met button, release, press it again, and then press and hold the 'Range' Button. The Change Oil light in the dash does not flash.
Team Owner
Joined: Sep 2003
Posts: 25,414
Likes: 2,745
Since 'Oil Life' is calculated using the Oil Temp Sensor through the ECM & CCM maybe if you have a bad OTS then maybe that's expected. There's no direct reference to that in the FSM but maybe if you're familiar with using the DIC for ECM & CCM Data you set about checking that those functions work using the DIC. You have no CEL?
Does the 'RANGE' function correctly for other related operations?
Maybe 'Just Busted' ??
Does the 'RANGE' function correctly for other related operations?
Maybe 'Just Busted' ??
Thread Starter
Instructor
Joined: Jul 2020
Posts: 196
Likes: 14
From: Houston Texas
Since 'Oil Life' is calculated using the Oil Temp Sensor through the ECM & CCM maybe if you have a bad OTS then maybe that's expected. There's no direct reference to that in the FSM but maybe if you're familiar with using the DIC for ECM & CCM Data you set about checking that those functions work using the DIC. You have no CEL?
Does the 'RANGE' function correctly for other related operations?
Maybe 'Just Busted' ??
Thanks, WVZR-1,
One person who responded stated that I was pressing the wrong button....,.Really?
I am not familiar with the car's systems and have no working knowledge of those systems that you mentioned. So, let's take them one at a time and come up with a solution. Let's test the Oil Temperature Sensor and determine if it is the culprit. I will remove it and see if it was either disconnected, bad wire, or if the sensor is somehow damaged from a visual inspection.
One respondent suggested that I test the buttons to see if they are properly operating. I will monitor responses in the dash to affirm that pressing them causes a digital message in the dash. I will do that momentarily.
Does the 'RANGE' function correctly for other related operations?
Maybe 'Just Busted' ??
Thanks, WVZR-1,
One person who responded stated that I was pressing the wrong button....,.Really?
I am not familiar with the car's systems and have no working knowledge of those systems that you mentioned. So, let's take them one at a time and come up with a solution. Let's test the Oil Temperature Sensor and determine if it is the culprit. I will remove it and see if it was either disconnected, bad wire, or if the sensor is somehow damaged from a visual inspection.
One respondent suggested that I test the buttons to see if they are properly operating. I will monitor responses in the dash to affirm that pressing them causes a digital message in the dash. I will do that momentarily.
Corvette Stories
The Best of Corvette for Corvette Enthusiasts
5 Best & 5 Worst Corvette Daily Drivers
Joe Kucinski
The Headlights of Every Corvette Generation Explained
Joe Kucinski
5 Best & 5 Most Overrated Corvette Track Packages of All Time!
Joe Kucinski
Every 2027 Corvette Engine Explained
Joe Kucinski
Designer Imagines A Corvette That Looks More Like a Corvette Than the Corvette
Verdad Gallardo
10 Ugly Corvettes That We Still Kinda Love
Joe Kucinski
Top 10 Most Expensive Corvettes Ever Sold on Bring A Trailer
Brett Foote
10 Things Every Corvette Owner Needs (2026 Edition)
Michael S. Palmer
8 Most "Only Corvette Owners Understand" Quirks and Problems
Pouria Savadkouei
Team Owner
Joined: Sep 2003
Posts: 25,414
Likes: 2,745
Since 'Oil Life' is calculated using the Oil Temp Sensor through the ECM & CCM maybe if you have a bad OTS then maybe that's expected. There's no direct reference to that in the FSM but maybe if you're familiar with using the DIC for ECM & CCM Data you set about checking that those functions work using the DIC. You have no CEL?
Does the 'RANGE' function correctly for other related operations?
Maybe 'Just Busted' ??
Thanks, WVZR-1,
One person who responded stated that I was pressing the wrong button....,.Really?
I am not familiar with the car's systems and have no working knowledge of those systems that you mentioned. So, let's take them one at a time and come up with a solution. Let's test the Oil Temperature Sensor and determine if it is the culprit. I will remove it and see if it was either disconnected, bad wire, or if the sensor is somehow damaged from a visual inspection.
One respondent suggested that I test the buttons to see if they are properly operating. I will monitor responses in the dash to affirm that pressing them causes a digital message in the dash. I will do that momentarily.
Does the 'RANGE' function correctly for other related operations?
Maybe 'Just Busted' ??
Thanks, WVZR-1,
One person who responded stated that I was pressing the wrong button....,.Really?
I am not familiar with the car's systems and have no working knowledge of those systems that you mentioned. So, let's take them one at a time and come up with a solution. Let's test the Oil Temperature Sensor and determine if it is the culprit. I will remove it and see if it was either disconnected, bad wire, or if the sensor is somehow damaged from a visual inspection.
One respondent suggested that I test the buttons to see if they are properly operating. I will monitor responses in the dash to affirm that pressing them causes a digital message in the dash. I will do that momentarily.
Thread Starter
Instructor
Joined: Jul 2020
Posts: 196
Likes: 14
From: Houston Texas
Okay,
I just tested the buttons to see if they are working. This is the result:
When I press the ENG/MET, I get a reading in the dash. It changes from one measurement system to another
When I press the RANGE button, I see that the digital dash responds
When I press the INST/AVER, the digital dash responds
There is no change or message in the digital dash when I press the TRIP ODO
RESET: No digital reading when I press FUEL. The TRIP button zeros out the trip reading on the digital dash
I just tested the buttons to see if they are working. This is the result:
When I press the ENG/MET, I get a reading in the dash. It changes from one measurement system to another
When I press the RANGE button, I see that the digital dash responds
When I press the INST/AVER, the digital dash responds
There is no change or message in the digital dash when I press the TRIP ODO
RESET: No digital reading when I press FUEL. The TRIP button zeros out the trip reading on the digital dash
Thread Starter
Instructor
Joined: Jul 2020
Posts: 196
Likes: 14
From: Houston Texas
My next two possible solutions is to Replace the sensor and to remove the monitor and clean the contacts. I plan to do this in the upcoming week.
My climate control buttons were not controlling the operations. I took it apart and cleaned the connections with alcohol and let air dry. I also used electrical cleaner aerosol. The buttons on the climate control now works. The light bulbs that illuminate the buttons still do not work. I plan to remove it, evaluate, clean, and replace it.
My climate control buttons were not controlling the operations. I took it apart and cleaned the connections with alcohol and let air dry. I also used electrical cleaner aerosol. The buttons on the climate control now works. The light bulbs that illuminate the buttons still do not work. I plan to remove it, evaluate, clean, and replace it.
Last edited by altownsend; Mar 18, 2022 at 07:46 PM.
Thread Starter
Instructor
Joined: Jul 2020
Posts: 196
Likes: 14
From: Houston Texas
I want to start over, and see if we can find a simple solution.
1990 C4 Corvette Automatic
Change Oil light came on. I changed the oil about 3 months ago.
I followed the reset procedure - from this forum site, below:
1. Turn the key to RUN, but don’t start the engine.
2. Press ENG MET on the Trip Monitor. Then, within
five seconds, press it again.
3. Within five seconds, press and hold RANGE on the
Trip’Monitor. The CHANGE OIL light should flash.
4. Hold the RANGE button until the CHANGE OIL
light stops flashing and goes out. This should take
about ten seconds.
Result: My Change Oil light never flashed. At the time, I counted twenty eight (28) attempts, and the Change Oil light did not flash, nor did it turn off.
Let's start from there and determine how to fix it - thanks
1990 C4 Corvette Automatic
Change Oil light came on. I changed the oil about 3 months ago.
I followed the reset procedure - from this forum site, below:
1. Turn the key to RUN, but don’t start the engine.
2. Press ENG MET on the Trip Monitor. Then, within
five seconds, press it again.
3. Within five seconds, press and hold RANGE on the
Trip’Monitor. The CHANGE OIL light should flash.
4. Hold the RANGE button until the CHANGE OIL
light stops flashing and goes out. This should take
about ten seconds.
Result: My Change Oil light never flashed. At the time, I counted twenty eight (28) attempts, and the Change Oil light did not flash, nor did it turn off.
Let's start from there and determine how to fix it - thanks
Team Owner
Joined: Sep 2003
Posts: 25,414
Likes: 2,745
I believe the 'proper/correct' approach at this point would be if you have the FSM you visit the 8D Section, read/study/understand the 'how to's' and check for all DTC's, if any or what else may NOT function as it should. Maybe you have just a communications that cleaning 'might' fix OR maybe worse.
At this point I'd say it's all 'ON YOU'! Do you have the FSM?
At this point I'd say it's all 'ON YOU'! Do you have the FSM?
Thread Starter
Instructor
Joined: Jul 2020
Posts: 196
Likes: 14
From: Houston Texas
I will check to see if this information is in the FSM that I got from you. I tabled this out of frustration after some guy on this forum told me that I pushed the 'wrong' button, and another guy stated that the 1990 did not have a 'Gauges' button.
I took the position that I (example) told someone that I went to the store and was unable to buy what I wanted, and the person asked me if I started the engine of my car to go to the store.
I am not looking for critics. I am looking for solutions.
I took the position that I (example) told someone that I went to the store and was unable to buy what I wanted, and the person asked me if I started the engine of my car to go to the store.
I am not looking for critics. I am looking for solutions.
Thread Starter
Instructor
Joined: Jul 2020
Posts: 196
Likes: 14
From: Houston Texas
I took the Trip Monitor out and apart. I cleaned the contacts and replaced the bulbs. Before this task, none of the bulbs worked, but, the buttons did work. today, March 30, 2022, and after cleaning the terminals in the Trip Monitor, neither the buttons work now, nor do the light bulbs work. The module seems to be dead.
Any ideas, please.
Any ideas, please.