you need to service your 4wd.
It means that the computer that controls the 4wd has detected a problem and set a code. You will need to have the system checked with a scan tool.
check the alternator and battery.
If the service engine light keeps coming on and the code reads?æevap?æ?ævacuum that means the part needs to be replaced. A auto shop can help take care of the repairs.
There is a failure in the oxygen sensor heater.
You need to test/replace the knock sensor. ireplaced it already.
Toe-Tapping
Toe-Tapping
Go to the engine oil life display. Hold the display button in until the engine oil life reads 100 percent. Release the button and the service light will go off.
Seems kinda crazy but GM started adding that warning light to its cars and trucks in the early 90's. This light comes on when you first start the car (along with many of the other warning lights) so that you can verify that the light bulbs in all those warning lights are working and not burned out. BUT, if the CHECK GAUGES warning light comes on while driving, it means one or more of the engine monitoring gauges is reading out of a normal range. Example: The temperature gauge needle usually reads at or about halfway up the gauge when the car is at proper orperating temperature. Should the engine begin to overheat and the gauge reads into the upper portion of the gauge (the red area) then the CHECK GAUGES light will illuminate along with a high pitched buzzing sound. For many years most American cars had all warning lamps and no gauges save for the fuel level and speedo. Some cars had an option from the factory of gauges to monitor engine temperature and alternator output/battery voltage and oil pressure, but few were ever equipped with these gauges.... Then in the mid 80's or so many cars came standard with AT LEAST an engine temperature gauge....But drivers still failed to keep a watch on the gauges and GM elected to add the CHECK GAUGES light.....Kinda like warning lights DELUIXE!!!!! Now you have gauges, warning lights, and audible waring to let you know, you are not going to go too much further in this vehicle without making some sort of repairs... You can get a check engine light reader from Kragen -- they will usually let you borrow it at the store if you are just going out into the parking lot -- it will tell you what went wrong so you can then repair it
ive been lucky enough to have driven a few of these vehicles. The "check engine light" is usually on the left side of the dashboard indicators and is actually a small message that reads "service engine soon".
There are too many codes to list. You must get the code read at a service center to figure out what the problem is. The single most important thing to remember is that if a check engine light is flashing you must shut the vehicle down immediatley.Autozone reads codes for free.
On some vehicles, the abs tone ring (what the sensor reads) is on the cv shaft.
Low-powered laser light