the voltage is 12.53 volts
I am going to post the wiring diagram and then will post the diagnostics for the diagram.
Locate the connector for the combination switch under the steering column. I need you to test for voltage at several pins and post back the results. I will number the test. Please list you response by the test numbers.
Note: You can use a safety pin or a sewing needle to poke into the wire to test them.
I received your response. It may take me some time to get back with you on this as I will not always be available this week end. One thing I should also mention is that this 2000 Tahoe Z71 is an early model and is actually a 1999 body style, if this makes a difference. It is also has 4WD.
1. 12.4 V
2. 0 Volts (12.4 Volts with ignition on).
3. 0 Volts
4. 0 Volts (light blue wire at pin A3 not A1)
Do you think this will also fix the cruise control problem?
OK. I will replace this switch and see if that takes care of all the problems. I have the part on order now, do you have any instructions or suggestions on the replacement process. I should have all the tool necessary, including the steering wheel puller.
I ordered the multifunction switch from 1A Auto and it should arrive in the next two days. In the video I did not see if the wire that goes to the brake pedal switch has to be removed and replaced. Does the multifunction switch have a wire that has to be hooked up to the brake switch? If so, it looks like that might be difficult to get to.
I'm having trouble getting the air bag assy off of the steering wheel. I have dis-connected the battery and removed the air bag fuse. I'm using a screwdriver in the two access holes coming in from the back side to try and make the release. I have tried pushing straight in, but there seems to be no give to the spring release. I have worked on this for an hour and I can not get the cover to release. PLEASE HELP. I have looked at all the videos I can find.
Are there two pins that have to be released in each of the two recessed openings on the back side of the steering wheel? when I look at the recessed area I see one recessed level with a Torx head screw and then a second deeper recess with a flat piece of metal at the bottom. I don't see how I can release two pins on both sides when there is only one recess 180 degrees apart. When I push and pry on this flat piece of metal nothing happens. The illustrations in the reference attachment look nothing like what I'm seeing. I'm sure this is a factory steering wheel but could there be more than one this model year? I have been pushing straight down very hard on the metal at the bottom of the hole with a screwdriver and I can feel the top of the cover move with the force but nothing releases.
Thanks for your help. That was the lighting problem and every thing went well, going back together. I thought that might fix the cruise control but it did not.