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Could be 2 or 3 different things. Find the Trouble Code by Grounding out the 13th point in the plug, where the analizer (under the dash) would plug in. Turn the key on but don't start the engine. Count the blinks of the 4 wheel drive lights. 4 total blinks or 3,2,1. Each blink tells you where the problem is located: Switch, control modem, shift motor, or wiring. Ask your Chevy garage for the code information out of manual. GOD BLESS & GOOD LUCK....
the flashing S light on your car is your tcu "transmission control unit" sending a trouble code to your dash this could mean alot of differant things if im not mistaken it will be an electrical problem not mechanical. is your speedometer just randomly jumping? the reason i ask is i drive a 91 as well and my S light is blinking and my speedometer jumps and sometimes doesnt work at all the the code for the S or tcu is 4 which is the vss "vehicle speed censor" eventually your check engine light will probably come on and if the code is 17 then its your vss as well but you can check the code by getting either a paper clip or small wire and using it as a jumper wire there is a little blue wiring harness on the passenger side of your car under the glove box use the paper clip or wire and plug them in "dont worry you wont get shocked ive done this plenty of times and in the rapair manual it tells you to do this" when you do this make sure the paper clip or wire is secure and put you key in the ignition and turn it to where your dash lights up but dont start the car the S light will start to blink count the blinks "1 long blink is 10, 1 small blink is 1" example if the light stays on for a couple of seconds and turns off and then blinks 4 times that would be code 14, if your check engine light blinks count that as well if you need help with checking any of it there is a video on you tube i believe the title is how do you check the check engine light on a 91 honda accord. or something of that nature. if you get the codes tell me what they are I may be able to find them and get more specific about what is goin on I hope this helps
Car no start problem is sometimes very difficult to confirm.
You try all the possible things, but still you get no fault and problem is still the same.--------
In that case, you need to check few things individually.
Check the spark,the battery,the crank, the fuel and other most possible parts.
Click this link below for more details:--
the kick panel just beside the left foot rest on the driver's side. 2)Locate blue wires. 3)Locate black connector. Hold it notch up. 4)With ignition off, insert one of the wires
into top row, 2nd pin from left. 5)Turn key to on position, but do not start the
car. 6)Watch blinky check engine light on dashboard.
Count blinks. Long blinks = 10, Short blinks = 1. 7)Keep watching blinky light until you get
To clear codes (after problem has
been resolved): 1)With engine off, stick the blue wires to 1st
and 2nd pin in the top row counting from left on the
connector, with notch facing up. 2)Start car. Shut off car. Remove pins. 3)Read codes to make sure they are clear. No
codes = steady blinks at 1/4 second intervals. yhis is for the 94, 92 should be the same. have a good day !!
Put the Key into the Ignition and turn from OFF to ON (not START) Position, which is right before Start and do this three (3) times. On the third time leave the Key in the ON (not Start) Position.
If you have a didgital Odometer look there for codes (example P 0123). There may be several so wait until it reads "donE". Record these Codes.
If you do not have anything reading in the Odometer window: Look immediately at the Check Engine Light and count the number of times the Check Engine Light blinks (on and off). There are two (2) digit blinks, then a pause followed by pause followed by more blinks. Record the number of blinks. The last set should be five (5) blinks followed by five (5) blinks.
Get back with me on what the blink counts were. (example 18, 23, 55).
Let me know if this helped, and provide me with additional information I requested. Contact me at FixYa.com using the comment section of tyour original Posted Question.
With the battery connected?
With a Digital Odometer: Turn the Key from Off to On (not start) three (3) times, On the third (3rd) time leave it in the On (not start) position. The Codes will appear in the Digital Odometer Screen. When it is finished it will show "PdonE".
It is on the 2001 Dodge Caravan.
Without a Digital Odometer?
Turn Key the same way and leave the same way.
Watch the Engine Light (yellow) and count and record the blinks. Do it a few times to get the count correct.
These are 2-digit numbers. The last set is 5-blinks and 5-blinks indicating that it is complete.
If you want to do it by yourself, I strongly recommend you to buy a manual book because there is a built-in self dianostic Check Engine light codes. And how to do it, just insert the key into the ignition and do it three times, Turn On and Off the switch but don't start the engine, and you will see the check engine blinking. Count the blink and start with 1-2 blinks, the next blink is to tells you where is the problem and it will end to 5-5 blinks.(BLINK is the CODE) and you could check in the book. If you know somebody has an OBDII Scan/Diag.,thats will be easy. ok
First find the dianostic port under dash, take a paper clip and unfold it so you got two ends, take one end and put it into the furterest one to the right, than take the other and plug it in next to it, than turn ignition key to on position chk. engine light should start to blink, if not than go to next one and so on until it does blink, when you got it to blink than its just a matter of counting the times the light blinks that will be your codes, for example one blink followed by a pause and then two blinks right together witch is a twelve and so on. But you will have to get a code book or go to a auto parts store to decifer the numbers or codes.
you have a trouble code turn key off and on 3 times to make dash lites go on then off and on the 3rd time leave the key on and watch the lite it should start to blink count the blinks and let me know be careful cause there will be paulses betwin some to make up your trouble code ie 2 3 eqals code 23