After driving 300 miles my ses light came on. Got to my destination and then made my return trip so added another 900 miles. The light stayed on couple of days then went out.A few days later had to go another trip and the light came back on after 100 miles then went out again after a day. Did the same thing this weekend. Any ideas on the problem. I have a 95 blazer with 325,000 kms on it and no problems but this one. Thanks for any help

 

The DTC will still be in memory. Connect a scan tool & retrieve the codes. Post them here in the order they are retrieved.