"Service" light
w155jmh
03-26-2003, 05:16 PM
My 2001 Sunfire has a yellow "Service" light (in addition to the "Check Engine " light). All the manual says is that this means the vehicle needs some kind of service. Can anyone tell me something more specific?
jon@af
03-26-2003, 05:27 PM
Do you maintain your car very well? and has it been doing anything outside the average that you are used to lately?
bowtiebandit
03-27-2003, 01:53 AM
Service Engine Soon light is related to powertrain problems, the Service Vehicle Soon light refers to just about anything else that could potentially be a problem in the electrical system...
SERVICE VEHICLE SOON
The IPC illuminates the service vehicle soon indicator when any of the following occur:
The IPC part number does not match the programmed model configuration number.
The BCM detects a PASSLOCK™ fault. The IPC receives a class 2 message from the BCM requesting illumination.
The BCM stores specific lighting and horn codes. The IPC receives a class 2 message from the BCM requesting illumination.
The BCM detects a passive trunk release fault. The IPC receives a class 2 message from the BCM requesting illumination.
The EBCM detects a traction control system failure. The IPC receives a class 2 message from the EBCM requesting illumination.
The IPC performs the displays test at the start of each ignition cycle. The indicator illuminates for approximately 3 seconds
The PCM illuminates the MIL (service engine soon or check engine) when the following occurs:
The PCM detects a malfunction in the emissions system.
The PCM performs the displays test at the start of each ignition cycle. The indicator illuminates for approximately 3 seconds.
The ignition is on, with the engine off.
SERVICE VEHICLE SOON
The IPC illuminates the service vehicle soon indicator when any of the following occur:
The IPC part number does not match the programmed model configuration number.
The BCM detects a PASSLOCK™ fault. The IPC receives a class 2 message from the BCM requesting illumination.
The BCM stores specific lighting and horn codes. The IPC receives a class 2 message from the BCM requesting illumination.
The BCM detects a passive trunk release fault. The IPC receives a class 2 message from the BCM requesting illumination.
The EBCM detects a traction control system failure. The IPC receives a class 2 message from the EBCM requesting illumination.
The IPC performs the displays test at the start of each ignition cycle. The indicator illuminates for approximately 3 seconds
The PCM illuminates the MIL (service engine soon or check engine) when the following occurs:
The PCM detects a malfunction in the emissions system.
The PCM performs the displays test at the start of each ignition cycle. The indicator illuminates for approximately 3 seconds.
The ignition is on, with the engine off.
CHarris
12-27-2003, 11:47 PM
My service engine light came on in my 2000 Sunfire at an odd mileage so I knew it wasn't the normal time for it to come on. So I found out from my handbook a few things to try. I checked my gas cap to see if it was on good, and sure enough, it was not on straight. I straightened it and screwed it on good; restarted; took off, and no more service engine light. I hope this helps you. My light hasn't come on since and it's been several months. My car has 86000 miles on it. I love it, althought it's not starting right now. It would not start the day before Christmas, and according to some postings it's probably the fuel pump.
CHarris
12-27-2003, 11:48 PM
check to be sure your gas cap is on good and straight.
fire02
01-07-2004, 07:50 AM
go to auto zone and have them do a free check... more than likely it can be caused by a faulty O2 sensor, its a common problem GM has on cavaliers and sunfires, there's alot of sunfires that have a messed up sensor before its even unloaded from the trucks :disappoin
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