95 z-71 ext cab engine codes

just bought 95 z71(350tbi). i am getting the service eng soon light occassionally. comes on then goes off. 146k miles. need to know how to check codes myself. i have only owned fords before, and am not familiar
with chevy ecu setup. i have googled this and not really come up with anything. any help would be greatly appreciated.
thanks,
c.
Add pictures here
<% if( /^image/.test(type) ){ %>
<% } %>
<%-name%>
Add image file
Upload

http://www.georgiasyty.com/aldl.htm
Doc
Add pictures here
<% if( /^image/.test(type) ){ %>
<% } %>
<%-name%>
Add image file
Upload
thanks Doc.
Add pictures here
<% if( /^image/.test(type) ){ %>
<% } %>
<%-name%>
Add image file
Upload

Motorsforum.com is a website by car enthusiasts for car enthusiasts. It is not affiliated with any of the car or spare part manufacturers or car dealers discussed here. All logos and trade names are the property of their respective owners.