there is a sequence of buttons pushed on the radio which access the ODB, sorry can't remember the sequence.
You can find it on 12volt.com
what buttons are used to bring up codes on display of 1994 cadillac etc
Reading the codes requires a scan tool.
To clear codes on a 1994 Cadillac Eldorado Touring, you'll need to disconnect the vehicle's battery. Start by removing the negative battery cable and waiting for about 10-15 minutes to ensure that the engine control module (ECM) resets. Reconnect the cable, and the trouble codes should be cleared. Alternatively, you can use an OBD-I scanner to clear the codes directly if you have one available.
how do you check a/c codes on a 2000 Cadillac Seville sls
To reset the computer system of a 1996 Cadillac Eldorado after self-servicing, disconnect the negative battery terminal for about 15 minutes to clear any stored error codes and reset the system. After reconnecting the battery, turn the ignition to the "On" position without starting the engine for a few seconds to allow the system to recalibrate. Finally, start the engine and let it idle for a few minutes to ensure everything is functioning properly. If any warning lights remain, check for any lingering issues or error codes.
first you have to run you car through a dyno test.
To reset the computer on a 1992 Cadillac Eldorado, you can disconnect the negative battery terminal and leave it disconnected for about 10-15 minutes. This will clear any stored diagnostic trouble codes and reset the engine control module (ECM). After reconnecting the battery, start the vehicle and allow it to idle for a few minutes to re-establish normal operating parameters.
probably something was left unplugged. Go to auto zone and get the codes read for free and it should tell you what it is.
There are pages and pages and items that can cause a check engine light. You need to have it checked for codes with a scan tool. After repair light can be shut off with scan tool.
press n hold the off and warmer buttons on heater controls while key is on
You cannot adjust the idle in a 1998 Cadillac Catera. It is computer controlled. If the idle is not at 750 rpms then there is another problem with the engine. Check for codes with an OBD2 tester.