Question about 1999 Chevrolet Blazer

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I have 98 s10 my blinkers where acting wierd i disconnected the grounds back by the tail lights then it wouldnt start. reconnected them then it started. is there other grounds that would be bad that i should check?

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You may be taking the ground off for the fuel pump. the tail light grounds should be in that area, or in the body. do the tail lights/brake lights work OK? what do you mean be wierd?

Posted on Sep 06, 2010

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Tail light on my 2000 S10 does not work


must be the switch on the pedal

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1995 Saab 900 Hatchback, problems with all exterior lights


Wow !! Where to start ??

I think most if not all of the lights go thru the ignition switch. What I mean is the ignition switch must be on for the lights to work.
Most of the lights are on different circuits with different fuses and relays. They are connected to the battery and alternator but not directly. Most but not all are connected to the headlight switch.
One thing that does tie everything together is the grounding of the car. All voltage goes back to the battery by way of the steel frame of the car.
If a ground strap or cable is loose or dirty, electricity has problems getting back to the battery.
So the options are the headlight switch, the ignition switch, and the ground circuits.
I would start by checking the tail lights or headlights to see if they are getting 12 volts, then check and see if the lights are grounded back to the battery. I've even run a wire from front to rear to bypass the car ground connections to test.

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The blinkers tail lights and brke lights dont work.


sounds as though you have a ground problem in the back or going to the back. if you can find the ground in the harness usually black or green, attach a wire to the body of the car and the ground on the tail lights and it should come on, then you know for sure there is a ground problem.

Oct 26, 2010 | 1991 Ford Probe

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2001 s10, fuel pump would not come on. i replaced with new one, fuel pump still wont come on. what is next


I ran into the same problem and solved it. To replace the fuel pump I had to remove the bed since the fuel tank is under it. I had to disconnect the tail light wires including the ground wires. One side had 1 grounding wire and the other had 2 grounding wires. After a month of messing around with fuses and sensors I found out that one of the (Two ground wires) next to the left tail light was actually the (Fuel pump ground wire). So if you don't know which one I am talking about, make sure you connect ALL the tail light wires and plugs before cranking up the engine. This was my luck with the s10 2001 and good luck to you :)

Jul 29, 2010 | 2001 Chevrolet S-10

1 Answer

How to replace 2001 s10 pickup fuel pump


This is not a full answer, but a tip on an easier way.to get to the pump. Instead of removing the gas tank. Just pull the bed off the truck! I guarantee that it will be easier. I did this on a 2001 S10 and it took less that an hour to remove the bed.
Remove the spare tire, and the tube that the tool to lower the tire goes through. You will need to unplug your tail lights under the back or the bed on both sides. There is also a grounding screw for the tail lights on each side that needs to be removed. Remove the screws that hold the gas tank filler hose to the side of the bed - right by the filler cap. Remove the tailgate (to make the bed lighter). Follow the frame down the length of the bed and you will find the bolts holding the bed on. There should be 6 or 8 bolts. My S10 had 8 bolts and my son's full size Chevy PU had 6 bolts (go figure?). Then just lift the bed off the truck. We did my S10 with 3 people and it had a camper shell and rack on it. My son's full size truck was lifted off with only 2 people. I would suggest 4 people however - one on each corner to make it easier to lift and control.
Replace the pump as described above and then you can start the engine to make sure everything works before setting the bed back on. NOTE: The fuel pump grounds back with the tail light ground. If the engine doesn't start right away, try grounding the wire back by the tail lights. It works like a charm. This is an especially nice way to do it if the gas tank is full! I spent 18 years as a professional mechanic and this is one of the slickest, least known tricks I have come across. I wish I'd known about it when I was wrenching for a living! Cheers!
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Apr 20, 2010 | 2001 Chevrolet S-10

1 Answer

My tail lights, blinkers, and backup lights won't work.


Check fuses, then trace the wires from the lights back. If I'm not mistaken there should be a connection where the wiring harness is. Mud, salt, and other junk have plagued me with electrical problems. Also a bad or broken ground can cause this.

Feb 17, 2010 | 1998 Chevrolet C1500

1 Answer

Running lights acting weird


they are supossed to go out but still dim alittle right

Nov 24, 2008 | 1999 Volkswagen Jetta

2 Answers

When i turn on head lights no tail lights at times if i do get tail lights and then apply the brakes i will lose the tail lights , when i turn on a blinker both sides will blink dimmly on back side of...


Hi....
On chevy .
Your problem is Mising ground. or poor groumd to the Tail lights.
First Check all the grounds on the engine compartment.
Near the BATTERY and the fenders wall.
If you found any one damaged Reapair as need.

But if everything is OK...
Check the connections of the Tail lights Under the BED of the truck.
If you found evrything good.

REmove Any of the Tail lights. APPLY GROUND at the BLACK wire of the Tail light connector and see if make any different. If the lights work ok. you can LEAVE with the Ground.
Or try to find where is the wire cut. or in missconntact.

OK... I hope this help to try resolve your problem.

Thank you for use fixya...

Aug 11, 2008 | 1990 Chevrolet C1500

1 Answer

Rear brake light problem


The tail light housing bulb holders are notorious for not making good contact to the tail light housing. Remove the housing, and disconnect the electrical connector. Label each bulb holder prior to removal, with a marker pen. 1, 2, 3, upper, middle, lower, etc. Remove each bulb holder, by turning counter clockwise 1/2 turn, and withdraw holder. Inspect each contact. You can bend the contacts outward a tiny bit, just flex it a tiny bit, and check with an ohmmeter for contact. Also inspect the bulb holders for melting from bulb heat, so much so that the plastic holder, which contains the bulb contacts, no longer make proper contact to the bulb. Also check the bulbs with an ohmmeter to verify that the bulbs are good. When reinstalling the bulb holders, check that the little flanges on the holders are properly inserted into the tail light housing. Reconnect electrical connector, and reinstall housing into vehicle. On a further note, with the electrical connector disconnected from the housing, you can check for voltages from the connector pins to ground, using a voltmeter. Turn ignition switch to run position, turn on headlight, and turn on blinker, or use stick to push brake pedal, against front of seat, and verify voltage from pins to vehicle frame (or connector ground pin). If no voltage, then check fuses, or broken wiring. My experience, however, is poor connection from bulb holders to tail light housing.

Jul 28, 2008 | 2000 Jeep Cherokee

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