Gmc Sierra Check Engine Light Flashing Then Stops

but it is unsettling to have the upstream light flashing

Stops light!

High Sierra backup for my iMac.

Used on the driver's door of a GMC Acadia. Very solid. I filled mine with rice.

The possibilities with this light are amazing. You should check it out.

This is a very nice headlamp, without two levels of white light, a red light and a flashing red light.  Having the battery pack on the back makes it much easier to balance and the straps are adjustable over a wide range.

Great size, love the built in light (it has flashing mode for some reason, just if you need to give someone a seizure on a film set?) I have always wanted this Porta Brace bag but kept talking myself out of it. I finally pulled the trigger on buying one and I'm glad I did. Sometimes I have a small lens in it if i am shooting an event with a smaller camera, but on a full set I kit it out with all the tools I'll need. for camera department. If you are on the fence about it, do it.

This flashing is amazing. The variable light settings to the strobe. No concerns on purchasing the light at all. I would love to give one to every person in my family. BUY IT YOU'LL LOVE IT!!!!

Very useful product because it is not like the regular flash. It has several functions that allow you to change such like: dimmer, lighter and even flashing. The flash level is used still not has a very strong light like regular flash. The image looks more nature light and hard to tell that is use flash or not.

With the press of a button-focus, zoom (variable), and flashing light showing camera is filming. It is so easy, light weight, hook up in seconds. This is a must have item. At the cost is inexpensive compared to the older version of this kind of equipment. Good investment and will make you smile.