2003 GMC Yukon XL - Page 3 - Answered Questions & Fixed issues
Battery light on dash is always on
It may be your battery or alternator. Take it to the nearest parts house and have the codes tested and that will tell you more of where the problem is coming from
What is security lock code to release?
Call a dealer and provide your vin #. Ask them more specifically what code you are looking for. Sometimes, you can find codes in your manual. Especially if your vehicle had previous ownership. Good Luck! Keep in mind that a dealer would love to tell you in needs to be brought in to be reset. Try asking your question, including more specifics like what security lock are you trying to release? There are many. :)
Why does my 2003 Yukon XL turn over but won't start?
Does fuel pump run ? Remove fuel cap. Have someone crank it for you,you should hear fuel pump running. If not bang on bottom of tank while cranking. If it starts fuel pump will need replacing , if not check for power to pump, if it has power,replace pump. If no power, check relay for operation
P0171 and p0174 codes in
THIS IS WHAT THE CALL TRHOTTLE POSITION SENSOR WICH IS LOCATE ON THE SIDE OF THE THROTTLE BODY THIS PS CONTROL THE IDLE ALSO CONTROL OR MIX THE OXYGEN WITH THE GAS
2003 yukon will not turn over.When I turn the key all the dash lights come on. It started doing this about 6 months ago. It would usually start after 2 or 3 tries or if i put in nuetral and let roll a
It could be the starter has a dead spot,the battery voltage is weak,the ignition switch itself,the antitheft passkey or the neutral safety switch..it could also be a bad brake switch.The shift /start interlock is connected to the brake switch...
troubleshooting..... 1) put a test light on the small wire on the starter and see if it lights when attempting to start.if it has 12v or the test light is bright,,but will not crank,tap the starter gently with a plastic hammer,if it cranks the starter is bad.2) make sure the security light is going out.If not it is not reading the passkey and the ignition is faulty.3)when it does not start,jumper with a good battery and see if it starts if it does the battery voltage is low.4) make sure the brake lights go on with every application of the brake pedal.5)try to start in neutral instead of park when the failure occurs,if it does...the neutral safety switch is no good.
best of luck
Auto repair
the power mirror glass is sold with the plastic back that has a round pivot that snaps into the housing.
How do i find ABs motor relay
pretty sure its the whole square thing on top of abs block on frame under seat area its old and in bad spot usually bolts don't come out you mite have to change whole thing where all lines go to.
Fan blows no heat
With engine warmed up, feel of heater hoses under hood to see if both are warm (careful don't burn yourself). If they both are warm, flapper door which directs airflow through heater is not working, probably because the actuator is bad or you have a vacuum leak. Check line under hood which goes to vacuum reservoir for vacuum, and check one way valve(check valve). Replace any old soft or cracked vacuum lines.
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