knocking sound under dash of Chevy Blazer when turned on/off?

Michelle

New member
we are thinking of buying a '94 Blazer for my husband to drive to and from work, the owner let us keep it for the night to see how we like it but when we turn it on and off there is a loud knocking sound under the dash where the glove box is but it stops after a few seconds... we really want this car because it is clean and we can buy it outright (we don't have much money to spend) so we are hoping this isn't serious.... do you have any ideas? has you Blazer done this?
 
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