Posted: Jul 23 2007 at 8:34pm | IP Logged

I was driving to work last week, when the service engine light started blinking. This truck has 173,000 miles on it, and has never given me a problem. And has been maintained accordingly. The truck has continued to run smooth as ever, now going on 400 more miles. So, this came as a suprise.

I checked there were no codes, on the PCM. So, I took it to the shop and had a Diagnostics done on it, no codes. The shop didn't have a answer. All fuses have been checked, with a meter and pulled and visually inspected. Today iI cleaned the battery posts, even though they were not corroded. Then had the alternator load tested, it is putting out 14.1 volts.

After, I get in the truck make two more stops, no light. I am trying to get to the bottom of this, so any help would be appreciated.