2005 GMC Yukon Xl Denali "key codes" Questions

can I unlock the system? Regards You have to check your owners manual. Your vehicle has to have the key in the one position for a certain amount of time. Most are for 2 hours to unlock the radio. Then

codes come back. ?Inspect the EVAP system for cuts/holes in tubes/hoses ?Inspect for damaged or disconnected hoses around the Evap purge solenoid ?Check and/or replace the sensor ?Check and/or replace

...get P0101. Which is maf but not it. Help Have you done an active test on the system it is called a key on engine running test, only high end scan tools can run this test, not code readers. You need ...

...you have to take it to a auto part store and they can tell you if there are any problems using a key code and then reset ...

...key out. Open then close driver door. Wait for 1 minute to reset. Then try to start, and check if the light will go off. If not, its advisable to have your vehicle scanned forn codes to determine the ...

...key to the "on" position, but don't start it. Then turn it off and on again 5 or 6 more times. 2. If the first doesn't work, you can disconnect your battery cables for a few minutes and then replace ...

...key on. The codes po171,174 indicate "both banks lean" which could be caused by a lack of fuel pressure. These codes can be caused by a M.A.F. sensor problem (Mass Air Flow sensor). Common problems ...

...start check wiring connections[fuel pump] and fuel filter --quick and easy way to check pump turn key and listen for hum of pump if hum pump running /under hood check fuel pressure at fuel line

When the start key on an Optima doesn't start the car what is this an indication of ? have the OBD codes read by a mechanic as this should tell you where the problem lies

...key turns the lock cylinder. The cylinder rotation produces an analog voltage code in the Passlock?"¢ sensor. This voltage code is received by the BCM. The BCM compares the voltage code to the ...