99 Burb,when starting makes noise in column ?

[snidelywhplsh]

Hello everyone,

I have 99 Suburban,lt 4wd 350 .When you turn key to start after engine engages, and as you start to let off key,it makes a noise that sounds like a cross between a arc and or relay clicking ? It sounds like its coming from the right side of the column around the key siwtch area ? I was told by another owner that GM had a tsb for Ignition switch,that also caused transmission shift problems ? Anyone heard of this ? It only does it as you let key off for a brief second.My hunting guide has the exact same Suburban (Year etc, even color ) and his does not do it.

Regards,
Kris