1985 Chevy S10 Indicator light on dash keeps blinking

Maybe it is in indicator for your brakes. First thing is check the fluid in the master cylinder. That would be in the engine compartment

Here is a fix >

Security and Immobilizer System Indicator Symbols Symbols & Tell-tales
These are Security and/or Immobilizer System Indicator symbols used by manufacturers. One of these symbols lights momentarily to indicate that the ignition switch is locked and will need the proper transponder-equipped key to re-start. The vehicle is immobilized otherwise. Green symbols will flash when the vehicle is immobilized.
If the symbol is visible when the vehicle is on, it indicates a malfunction in the security system. If the engine does not start with the correct key, and the security indicator remains on, the system may have a malfunction. You will need to contact your dealer in either case.
Keep the Symbol meanings with you!

Checked the fuses?

How about a worn out battery?

Is it more than 4 or 5 years old ?

When you have these auto parts stores & chain storeplaces look at thing for free or whatever,they don't really get to the heart of any diagnostics

That word is thrown around with no understanding
All they do is look for generic codes

No help in my opinion. You need a dealer or good repair shop
to go on a test drive with you & then really start component testing

You so called computer,which is a micro processor,seldom fail
and nothing ever points to anything

Testing system components is the answer

Same problem on my 85 k10 fuses are all good. I have no tail lights either. I dunno

yepper! lol i have owed 5 of this geneation and both the s-10 and blazer are identical in the dash, engin and drive train

it is on the top of the steering column in the truck cab.remove battery cables. remove the lower portion of you dash.loosen the bolts on the plate that holds your column up to the dash. the column will pull down some. you may have a gear indicator tab/string that needs to be undone. remove column clamp blots all the way. the switch is on the top, it has a rod that moves and is postioned on the column. remove old switch, install new switch in th position where the old on was

The negative number means the car should have had it's oil changed that many miles ago. Oil life starts at 100% for new oil & counts down every 10%. At 15% the display will always show, which means it's near time to change the oil.

usersteve83, your oil may have been changed but the timer not reset. Reset the timer as shown...
1. Turn ignition to the "ON" position. (do not start engine)
2. Press SEL/RESET repeatedly until the oil life indicator is displayed.
3. Press & hold the SEL/RESET for about 10 seconds until it blinks then let go of the button.
4. Press the SEL/RESET again for about 5 seconds or until the oil life indicator resets to 100%.

Wrench = Maintenance Minder: Symbol letter & number...
Symbol A - Relace engine oil.
Symbol B - Replace engine oil & filter, Inspect front & rear brakes, Check parking brake adjustment, Visually inpest the tie rods, suspension components,driveshaft boots, brake hoses & line (including ABS), all fluid levels & their conditions, exhaust system, fuel lines & connections.
Symbol 1 - Rotate tires.
Symbol 2 - Replace air cleaner element (dusty conditions every 15K miles) & replace dust & pollen filter (behind glovebox) every 15K miles if mainly dusty or city driving.
Symbol 3 - Replace transmission fluid.
Symbol 4 - Replace spark plugs.
Symbol 5 - Replace engine coolant.

All above are taken from the 2006 Civic EX owner's manual.