Question about 2004 GMC Sierra
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Posted on Jan 02, 2017
You remove any of the trim that is contacting the headliner,remove light in the center,remove visors and any hooks that are there to hang things on ,Most of your trim has push in retainers handles and hooks,seat belts should have screws inthem.
Posted on Aug 31, 2009
remove cover.take off back wheels and calipers (or drums).turn differential to where you see small bolt/pin (5/16) horizontally (same direction as axles)on right side of differential.remove bolt/pin.A large pin (about 5"long 3/4"diameter) should slide out differential with ease ( you may have to tap one side of the large pin).turn differential to completely remove large pin.turn differential so you can see in the view window.push each axles in (they'll go in about 1 1/2"each) You may hear one of the axle C-clips fall.If not use a small telescoping magnet to remove the C-clips from the axles through the differential window.pull each axle out about 10"so they are out of the diff.Now remove the cap bolts(4-5/8"bolts) and remove the caps(mark the caps so they go in excactly the way they came out.be careful the diff might fall out.If not you may have to use a long bar or 2x4 to wedge and pry the differential out. Have a basket/crate w/rags in it to catch the diff.TIP:If you are removing the ring gear from the diff, the bolts are left handed bolts meaning you have to turn them clockwise to loosen and counter clockwise to tighten ; )
Posted on Sep 15, 2009
Testimonial: "thank you helped ALOT perfect instructions "
Mkisner, I have a 2003 gmc 1500 extend cab. I hear a small fan running in the headliner. It's very loud when cold outside. When I press on the grille in the head liner it quiets down. After the cab warms up the sound goes away. I ask the mechanic at the dealer what in heck is that. He said it's a fan that registers inside temperature for the air/heater. They have to take the headliner down to change it. He said expensive to change because of labor so I live with it. That is the explanation that was given to me. It does look like a speaker. The On-star voice receiver is in the mirror and speakers are the radio. That's why the radio music mutes when talking to On-Star or using the truck phone. You might what to know that Verizon has a deal with On-Star to add the truck phone to you Verizon bill for $9.95 per month sharing your minute with your cell phone. Verizon will assign a new phone number for your truck. It works great and you can program voice commands for the phone. Very powerful and clear. You can't go wrong but you have to keep On-Star active. Ken
Posted on Sep 15, 2009
The pcv is on the drivers side valve cover. It's an orifice type system and only needs to be checked for blockage which usually don't happen. If you can see through it don't replace it.
Posted on Dec 06, 2009
Defrost is the default position. Is the control a autyomatic temperture control unit? ( you set the temp and select automatic) if it is the system is completely electronic. You push the buttons and the control still says defrost or can you select something else and the control shows it but it just keeps coming out the defrost? If the control changes and the air comes out the defrost anyway and the cheack engine light isn't on, then the problem can be blown fuses or an air door actoater not working. Does the dash emit a clicking sound? if it does with the covers off the bottom of the dash reach around touching the different pieces till you touch the idem that is clicking. this is an acutor motor, or blend door motor. they have gears in them that wear out and break the motors aren't repairable and you just replace the ofending motor. the door that is moves can be stuck. and may have to be freed up with blaster, WD40, or other rust buster till it moves easy. maybe after getting the door to move smoothly you can get the old motor to move the door wiithout having to install a new one.
Posted on Jan 06, 2010
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