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Posted on Apr 02, 2017
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Sys light comming on


I have a 1992 Corvette, I have "SYS" flashing where my miles per gallon reading was on my dash but not all of the time. I drive my Corvette allmost everyday to work about 75 miles round trip and the light comes on about once every 5 starts or so, and the light above the A/C buttons flashes for about 5 minuets after all starts then stays a stedy green after that.. I hooked up a DTC code reader it flashed "SES" code 12 but the LTPS and the LTPWS stayed on until I turned of the ignition then neither came on after that, but after removing the DTC code reader I started the car and it was like the battery was almost dead it would bearly crank over.

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Marvin

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  • Chevrolet Master 85,242 Answers
  • Posted on Apr 02, 2017
Marvin
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SYS means that there is a malfunction and that it's registered in the car's computer. You need to have the system tested for fault codes.

5 Related Answers

Anonymous

  • 2 Answers
  • Posted on Feb 21, 2009

SOURCE: 1993 corvette electronic a/c-compressor won't come on

There is a way to retrive the diagnostic codes in the A/C system by holding 2 buttons at the same time on the panel. I did this many years ago to solve a problem on my '92 Roadster. I got the info from corvetteforum.com Post your problem at corvetteforum.com. There are many experts there that will help.

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Anonymous

  • 2 Answers
  • Posted on Mar 24, 2009

SOURCE: Battery light stays on

Many possibilities but the alternator is a good place to start, if its plug is loose, then the green relay inside the center console just to the left and slightly in front of the emergency brake will be clicking in connecting and disconnecting the battery( one loud click per time). It will need replacing or simply disconnecting works for the short budget.

Anonymous

  • 1 Answer
  • Posted on Apr 15, 2009

SOURCE: battery light flashes red car shuts off while driving

try making sure the battery cable and alternator is grounded

Anonymous

  • 2 Answers
  • Posted on Apr 23, 2009

SOURCE: the green light keep flashing and it dont stay on

The green light on the dash flashes when the lights are off or if you have just the day time running lights on. If your lights are on the light should go out. or if a head lamp is out it may stay on

Anonymous

  • 118 Answers
  • Posted on Jul 20, 2009

SOURCE: My 1986 chevy corvette dash lights and headlights

Check to see if there is a headlight relay and check all ground circuits to the lighting system. They are both powered from the same circuit.

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Sys light flashes every 15 sec.

It could be something to do with the battery itself. It may not be all the way in or tightened up. Because that will cause a lot of those problems.
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Sys light flashes on evey 15 sec.

This usually means your battery is bad / is about to die.
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The gas gauge for the front tank on my 1992 F150 is stuck past full

replace front fuel pump because gauge is made into fuel pump and not serviceable. Or poor boy way of getting by would be fill front tank with gas reset mileage drive normal for a day. refill again with gas note gallons used and mileage driven for average miles per gallon. front tank should be around 17 gallons multiply by mile per gallon you figured
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I HAVE A 2003 GMC ENVOY. I NEED TO KNOW HOW MANY MILES CAN I DRIVE BEFORE THE GAS RUNS OUT ON A FULL TANK?

there is a book publish by the govnt or minister of transport on the exact milage as well if you know how many liters or gallons go in your tank like 80 liters and the gas is 1.00 a liter it cost $80 for 80 liters on a full tank you do 500 km but make sure proper conditions of 100km a hour tires all proper equal pressure the wind is also a facture there is a lot involved to calculate your gas proformance as well if you had a oil change done latly you can find out on a govt site for gas consuption or consumers report
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I have a 95 corvette, after turning on the ignition I get a "SYS" prompt on the drivers invformation panel next to the fuel and other guages information. Do you know what might be the cause? The manual...

Check your battery terminals, or your battery itself... SYS .. is just letting you know that something electrical is going bad.. I know it happens alot when people install aftermarket stereo systems in these cars ...
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Have a 2004 cavilier code is PO 455 DTC could it be a gas cap it is not the original, one I purchased from auto parts store for my car.. My car is running fine does not sound bad at all,replaced a part...

P0455- Evap Emission Ctrl Sys Gross Leak Detected
The code is telling you that you have a vacuum leak and it is large. You can do a smoke test on the hoses and see where the smoke is pulled in the lines and then fix that leak. The gas cap could be a problem but it sounds as if you have had it on the car prior and the light did not kick on. If this is not so them I would diffidently check that first. If you keep driving it the light will stay on and the emissions will not all function as they should also you may lose some mileage per gallon along with a sluggishness in the pickup speed. Hope this helps.
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Tried to jump start 94 chevy corvette and accidentally placed the negative cable on the positive terminal and vice versa. Got a new battery, but it only turns over. SYS flashing on dash screen. Help!

check to make sure no wires are melted apart. and also check fuses. espesially the main fuse. check the voltage from alternator to battery, it should be 14 to 14.3 when running. battery voltage should be about 13 volts when engine is off.
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How many gallons per hour does this car lose?

hey
at the begging u should clarify how many gallon u used.
112 miles at 28 miles per gallon --> 4 gallons burned (112/28)
So that means we leaked 11 - 4 = 7 gallons

Now figure out how long the car was driving.
112 miles at 64 miles per hour --> 1.75 hours

So, leak was at a rate of 7 gallons in 1.75 hours
7/1.75 = 4 gallons per hour leaked.
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