Many things can go wrong with a vehicle now a days that dont affect the way it runs, you should take this as a sign that things are starting to show problems and you need to get it checked by computer before things get worse. The engine code can be pulled at any auto parts store but the transmission code may need to be accessed at the dealer. A blinking light usually indicates a problem that needs attention right away so dont wait.
It depends on what type of engine and transmission the Passport has.
If the Yukon engine has high rpm while driving, check the transmission for slippage, that will cause the engine to over rev. The overheating could be caused by the high rpms.
underneath engine on drivers side, mounted on transmission.
If the check engine light is blinking that indicates an engine cylinder misfire has been detected
If the check engine light is blinking that means an engine cylinder misfire has been detected
If the check engine light is blinking that means an engine cylinder misfire has been detected
Most likely the clutch is shot. When the clutch plate can't engage with the transmission there will be slippage between the engine and the drive wheels.
If the check engine light is blinking that means an engine cylinder misfire has been detected
it is possible tha the transmisiion compter set a slippage code due to low fluid while you were refilling
4 speed. There are three speeds in which the transmission permits more slippage between the engine flywheel and the torque converter. The OD, or "overdrive" gear is a fourth gear that creates a direct mechanical connection between the transmission and engine. This creates a higher gear ratio that improves gas mileage.
Check the transmission fluid level (no you cant check it like oil level you need to have it on and in gear (make sure the wheels are blocked and the emergency break is on)). You may want to also check to see if the rubber transmission mount is sagging.
If your check engine light is blinking that means an ignition misfire has been detected