Trying to figure out my vocal panning situation.  Been reading lots of posts on panning but can't seem to get any of my vocal tracks to pan. 
 
My understanding of stereo vs mono in the sonar world is cloudy, so I will describe what I see and what I hear and maybe I can gain some clarity from the community.  I recorded a vocal track.  I can't recall if I recorded it in mono or stereo.  When I play it I can see two distinct volume bars that respond independently and when I pan the track left, only the left bar shows and when I pan right, only the right bar shows.  So this suggest to me that I have both left and right capability for the track.  But when I listen to it, the sound does not go to the left or right, stays in both speakers even though the volume bar is showing only the left side playing.  Tried bouncing it to a mono track and bouncing to a stereo track, no difference in sound.  Tried sending to diff busses,no diff in sound.  I am not sure what the various buttons should have on the pan issue, like "post", "iterleave" etc.  but whatever I do I cannot hear a left or right pan.

Often panning  issues have to do with track routing and how you have your master bus outputs assigned. Make sure that your master output is sent to stereo hardware outputs on your sound card that are panned L\R and that your vocal track output is assigned to that master bus.

Possibly something downstream from your track, like the master or a bus, has the interleave set to mono. From help:
 
SONAR has a Mono/Stereo button in each track module in the Track Inspector and Console view. The buttons in the track modules force each track to play in either stereo or mono, but preserve the tracks’ pan positions in the stereo mix.
 
The Mono/Stereo button  in each track forces the track’s audio signal to enter any patched plug-ins as either mono or stereo, whether or not the tracks are mono or stereo. This allows you to use either mono effects on a stereo track or stereo effects on a mono track.
 
To use a track’s Stereo/Mono button
 
Note: You may lose important stereo data by using mono effects with stereo tracks because your stereo tracks are summed to mono in order to pass through the effect. If you never want your stereo data to be summed to mono, select stereo.

1. Open the Track Inspector or Console view.

2. In the track you want to force to either mono or stereo for processing effects, click the Stereo/Mono button to the desired position.
 
Note: It is not possible to set a track’s Stereo/Mono button to Stereo if a mono plug-in is the first effect in the track’s FX Rack.

Good suggestions, tried them all, still no pan function.  What I can't understand is why i can see two distinct volume meter bars in my vocal track and when I move the pan dial left and right, visually the right bar or left bar is visible indicating the sound has been panned to the left or right, but there is no difference in the sound and it still comes out of both speakers.  Any other thoughts what may be causing this ?

squonk2
Good suggestions, tried them all, still no pan function.  What I can't understand is why i can see two distinct volume meter bars in my vocal track and when I move the pan dial left and right, visually the right bar or left bar is visible indicating the sound has been panned to the left or right, but there is no difference in the sound and it still comes out of both speakers.  Any other thoughts what may be causing this ?

got any FX on that track ? (a send to a bus)

So what kind of mic you used. Sounds like your vocals is on 2 separate tracks.
Try setting up a new Test Project. Just one audio track feeding a master bus......
 

Chuck:  There is FX on the track, but have turned it off and tested and no change.  The vocal track is being sent to a bus, but it's a stereo bus.
 
Simple:  Using a Berringer powered studio mics.  I have several tracks of vocals, but each is on it's own single track.  
But good idea to set up a new test project w just one audio track feeding a master bus to see if that will pan, will try that.
 

squonk2
Chuck:  There is FX on the track, but have turned it off and tested and no change.  The vocal track is being sent to a bus, but it's a stereo bus.
 
Simple:  Using a Berringer powered studio mics.  I have several tracks of vocals, but each is on it's own single track.  
But good idea to set up a new test project w just one audio track feeding a master bus to see if that will pan, will try that.
 

its got to be your routing to the bus or a stereo effect bleeding data through one or both sides.
drag the audio to a new track feed to the master/no bus.
this will help you eliminate the offender.

This brings to mind a few things.  If it is a mono track recording - if there is a stereo effect - such as - reverb - on this track - you will need to set the track to stereo.  If your track is routed to the master buss, does the master buss reflect the panning changes in its meter as well?  If not - your problem lies between those points.  
 
 
 
There were times, when I would open a session that I had started in my early days, with an older version of sonar - and sometimes a track would just not pan correctly... Im certain it was user error, etc.. in the session.   What I would do to work around it was - clone the track in question, only... just the events... no automation, outputs.... just the events.  then... I was free and clear of any old dooffus moves I may have done in the past.
 
 

squonk2
Good suggestions, tried them all, still no pan function.  What I can't understand is why i can see two distinct volume meter bars in my vocal track and when I move the pan dial left and right, visually the right bar or left bar is visible indicating the sound has been panned to the left or right, but there is no difference in the sound and it still comes out of both speakers.  Any other thoughts what may be causing this ?

Follow this process through.
You say your track meters respond to whatever panning you set. Is this also visible in your busses and your Main Outs?