Question about 1994 GMC Sierra
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Posted on Jan 02, 2017
You have to unplug the old radio. The radio isn't the part in the dash. That is just the control to the radio. The radio is actually under the dash above the accelerator pedal. It should have the power wires, speaker wires and antenna wire going to it.
Posted on Mar 30, 2009
This could be a number of things, that is why it is a good idea to have the engine codes read which many part stores offer for free.
The service engine light will go off if there is vaccum leaks, faulty sensors or circuits, or any electrical problems
Posted on Aug 24, 2009
unhook the battery, there are 2 wires on the starter solenoid, 1 is a 5/16 nut and the other is a 9/16 nut remove those wires. this maybe easier to remove the heat shield first. next ther are two 9/16 bolts holding the starter in position, remove, and the starter will come out, about a 15min job
Posted on Sep 27, 2009
Turn the ignition on and within a few seconds slowly pump the gas pedal three times. A message displaying "oil life reset" should show up in the drivers information center. If you have the "newer" driver information center look for an "i" button and scroll through it until you see "oil life **%" displayed. At that point press and hold the reset button until it resets to 100%. Should take about 10 seconds of holding the button.
There should be instructions on how to reset it in the owners manual if this doesn't help. Good luck.
Posted on Oct 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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Please see my tip at http://www.fixya.com/cars/r6022358-relay_check to check the relay and socket. These are generic instructions. If you get stuck or need specific instructions for your car, please get back to me with model, year and engine info.
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