Radio code for 2005 gmc yuckon - 2005 GMC Yukon

I typed this earlier so it is a copy and paste answer, but is the complete answer. If no registration document, you need a code company.

If it was an OEM radio that came with the vehicle when new, you can take your registration document to a local dealership and they will look up the code for you.

If it is an aftermarket addition, you will need to pull out the radio out and find the serial number on it. It is on a paper ticket, back or side. Then contact one of the radio code websites who will supply the code for a small fee based on the serial number.

https://www.google.com/search?q=car+radio+codes

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You will need to contact your local GM dealer service department.

if it is a factory radio (head unit) i believe you need a code to unlock it. its something the auto companies started doing awhile back so when someone stole your radio they could not unlock it to resell it.

ticking with vehicle motion is generally the sign of a wheel bearing going bad. sounds like front left. if it clicks loudly when you shift from R to D or vice versa then I would have the CV joints checked. If the left is going bad, have both sides done.

You will need to get the code from the dealer. Bring them your registration (to prove you own the truck and it's radio) and they can look the code up by your vin#

check rubber hose in tank going from pump to sending unit / also if there isnt injector pulse could be cam sensor in distributor

Try asking here for free advice + code (if available)

www.ukbookshelf.co.uk

Here ya go. enjoy!
2002 GMC Sierra C1500 Car Radio Wire Color Codes
Car Radio Battery Constant 12v+ Wire: Orange
Car Radio Accessory Switched 12v+ Wire: Yellow
Car Radio Ground Wire: Black/White
Car Radio Illumination Wire: Brown
Car Stereo Dimmer Wire: Gray
Car Stereo Antenna Trigger Wire: N/A
Car Stereo Amp Trigger Wire: N/A
Car Stereo Amplifier Location: Under the center console.
Car Audio Front Speakers Size: N/A
Car Audio Front Speakers Location: N/A
Left Front Speaker Positive Wire (+): Tan
Left Front Speaker Negative Wire (-): Gray
Right Front Speaker Positive Wire (+): Light Green
Right Front Speaker Negative Wire (-): Dark Green
Car Audio Rear Speakers Size: N/A
Car Audio Rear Speakers Location: N/A
Left Rear Speaker Positive Wire (+): Brown
Left Rear Speaker Negative Wire (-): Yellow
Right Rear Speaker Positive Wire (+): Dark Blue
Right Rear Speaker Negative Wire (-): Light Blue

The only way is to get the code from a dealer. Call your local GM dealer and they will walk you through it.

I have info at work. contact you tommorow.