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Does not start consistant, and now does not start at all. dealership found key module to be bad and still there is more wrong with wiring harness

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Why my car wont start


With so many codes coming up, I'm thinking that the ECM is either faulty or the wiring harness is loose. The ECM is usually on the passenger side under the dash, but I am not sure of its location in your vehicle. I would ask at the dealership.

Jun 18, 2014 | 2007 Cadillac SRX

1 Answer

Why is my security light flashing and it starts but shuts down after a few seconds?


Possible issue with you security module. I think it is linked to your BCM, but I could be wrong. I had the same issue some time ago. After 10 minutes, the car would start. Try getting another key at the dealership. It could be that the chip in your key is starting to go bad.

Jun 15, 2014 | 1998 Pontiac Firebird

3 Answers

Sometimes my 2008 sonata won't start back up after turning off engine, I have to wait at least 20-45 minutes for it to start back up. I hear 1 click when I turn the key and everything else seems to...


Sounds like it could be a similar issue to what I just went through. My car wouldn't start on two separate occasions after I had refilled my tank. First time happened a little over a month ago, the starter would crank, and crank, but no signs of life in the engine. Tested the spark plugs, I was getting spark, but the ****** wouldn't start.
Had it towed to the dealership, and they said after 4 long attempts, they got it to start. I took it home, and the next morning I couldn't start it again. Towed it back a second time, and it started right up for them. Drove it back home again and a a month later things started acting up again.
A few days ago the wife pulled the car out of the garage, where the car was level, stopped the car on our slanted driveway and when she came back to start it just minutes later, it hesitated, but did turn over. I filled up the tank and the very next morning, I could not start my car again.
Called for a tow from AAA, and the driver said "let me try something". Pulled out a hammer, and wacked the bottom of my gas tank 4 or 5 times. The tow guy gets in, tuns the ignition to engage the fuel pump (didn't turn the key all the way), he does this about 4 times, then the very next turn of the key it starts right up. The driver said it sounded like a bad fuel pump.
I drive the car back to the dealership (this is the third time) and talk to the same guy I had dealt with all along. He calls me later in the day to tell me they finally got it to not start and were able to isolate the problem to the fuel pump sensor. They replaced the fuel pump assembly and I was off and running.
Hope this helps!

Jun 12, 2011 | Hyundai Sonata Cars & Trucks

1 Answer

I need a radio wiring digram color code for 2009 chevy silverado


2009 CHEVROLET SILVERADO C1500 4DR TRUCK WITH 4.3L ENGINE AND STANDARD AUDIO SYSTEM

Remote Start
WIRE COLOR POLARITY LOCATION
Battery RED/WHITE (+) IGNITION SWITCH HARNESS
LOW CURRENT, FOR HIGH CURRENT USE RED/BLACK AT VEHICLE FUSE BOX
Ignition 1 PINK (+) IGNITION SWITCH HARNESS
Accessory 1 BROWN (+) IGNITION SWITCH HARNESS
MAY BE YELLOW ON SOME MODELS
Accessory 2 PINK/BLACK (+) IGNTION SWITCH HARNESS
FOR REMOTE START INTEGRATION
Starter 1 YELLOW/BLACK (+) AT MODULE UNDER HOOD BEHIND DRIVER HEADLIGHT
NOT FOR REMOTE START, FOR REMOTE START INFORMATION
Starter 2 PINK/BLACK (+) IGNITION SWITCH HARNESS
FOR REMOTE START INTEGRATION
Anti-Theft Type GM PASSKEY IIIĀ® ANTI-THEFT SYSTEM
Anti-Theft Descript THE KEY SENDS AN RF SIGNAL TO THE BCM MODULE THROUGH AN ANTENNA LOCATED AROUND THE IGNITION CYLINDER
Key Sense PINK (+) IGNITION SWITCH HARNESS
Tachometer WHITE (-) AT IGNITION COIL
Speed Sense YELLOW/BLACK (AC) AT ECM MODULE UNDER HOOD ON DRIVER FENDER
BLACK PLUG PIN #57
Parking Lights LIGHT BLUE (-) AT VEHICLE LIGHT SWITCH
Brake Lights LIGHT BLUE/WHITE (+) AT SWITCH ABOVE BRAKE PEDAL
IGNITION MUST BE ON FOR THIS WIRE TO TEST
Reverse Lights DARK BLUE (+) AT BCM MODULE UNDER DRIVER DASH
Horn TAN (-) IN HARNESS AT STEERING COLUMN
ALSO AT BCM MODULE UNDER DRIVER DASH
Modules
WIRE LOCATION
Please select another category
Doorlocks/Windows
WIRE COLOR POLARITY LOCATION
Power Unlock WHITE (-) AT BCM MODULE UNDER DRIVERS SIDE OF DASH
THIS WIRE UNLOCKS THE REAR DOORS ONLY, WILL REQUIRE A 5-WIRE SET-UP IN EACH FRONT DOOR TO INTEGRATE OR A SERIAL DATA MODULE FROM AN ALARM MANUFACTURER
PowerLock LIGHT BLUE (+) AT BCM MODULE UNDER DRIVERS SIDE OF DASH
THIS WIRE LOCKS THE REAR DOORS ONLY, WILL REQUIRE A 5-WIRE SET-UP IN EACH FRONT DOOR TO INTEGRATE OR A SERIAL DATA MODULE FROM AN ALARM MANUFACTURER

i would use a DLPK module

DLPK (2009 Chevrolet Silverado)
W2W
CC-Heated Seats Activation
DL-Arm Factory Security
DL-Disarm Factory Security
DL-Door Lock Control
DL-Door Unlock
DL-Driver Priority Unlock
PK-Immobilizer Bypass-Data No Key Req'd
RS-RAP Shut Down (Remote ACC Power)
RS-Tach / RPM Output
SS-Entry Monitoring ALL Door Pins
SS-Entry Monitoring Driver Door Pin
SS-Entry Monitoring Front Door Pins
SS-Entry Monitoring Hood Pin
D2D
CC-Heated Seats
DL-Arm Factory Security
DL-Disarm Factory Security
DL-Door Lock Control
DL-Door Unlock
DL-Driver Priority Unlock
PK-Immobilizer Bypass-Data No Key Req'd
RS-RAP Shut Down (Remote ACC Power)
RS-Tach / RPM Output
SS-Entry Monitoring ALL Door Pins
SS-Entry Monitoring Driver Door Pin
SS-Entry Monitoring Front Door Pins
SS-Entry Monitoring Hood Pin


Hope helps.

Mar 31, 2011 | Chevrolet Silverado 1500 Cars & Trucks

1 Answer

Ecmb fuse blows as soon as i put in a fuse without keys in the ing.


hi, i have seen this problem before, i am a trained ase mechanic who works in a shop weekly. in my case, the suburban was a 91, it started by blowing the fuse randomly, then as it got further along, the ecm b fuse would blow consistantly as you describe. I found the problem to be in the wiring harness between the fuse block and the electronic control module on the pink/black power wire. It had become hot next to the radio and the insulation had melted into a direct ground to the ecm. then as time passed, it melted six other wires till it hit battery power. this is when it shorted the fuse all the time with key in or out. You should start by checking behind the glove box at the wiring harness going into the ecm, if you can get a schematic for the wiring, it would be better advised. See if you can find the Pink and black stripe wires(there maybe several of them as they power everything from egr solenoid to oxygen sensor possibly) and look for melting of the insulation. If you do find this to be the case, technically you should replace the whole harness, but it is possible the cut and splice in new wires. If any other wires are affected, you should replace these also. Check the whole length of the affected wires, they may have shorted all the way up or down. If this sounds like a big deal, it is! so, good luck, hope this helps.

May 10, 2010 | Chevrolet Suburban 1500 Cars & Trucks

1 Answer

Abs light, brake light, engine light stay on but do not flash


Well, that sucks, for sure. The only commonality I can see between the engine, abs, brake light and speedometer is possibly a bad vehicle speed sensor. But when you throw in the codes for lost comm and cluster error, that muddied the water a bit. I am sure that there are separate fuses for the trailer wiring harness (my 04 chevy has separate fuses, surely an 09 dodge does) so I doubt trailer wiring could have done all this. A lost comm could be caused by a blown fuse. I would inspect every single fuse I could find in the entire vehicle, also, I have researched your problem a bit and have found a couple possible fixes. One is that the abs sensor on the rear differential is known to be sketchy and needs to be changed. The other is cleaning any ground cables that are connected to the fuse box on the front left fender. I hope this helps!

Mar 02, 2017 | 2007 Dodge Ram 2500 Mega Cab Laramie

1 Answer

Need to find switch power wire 2006 explorer for fm modulator


Have you tried looking for an empty cavity in the fuse panel? Usually there will be one or more in there, just stick probe in there, and if no power, try turning key on, and if it lights up (test light) or shows power , use it. make sure you fuse wire though.

Dec 23, 2009 | 2006 Ford Explorer

1 Answer

1998 cheverlet pickup,security light came on and dont know how to reset it???


can't be reset. the security system consist of the igntion key, igntion key cylinder, wire harness and module.
the most likey cause of this is the tiny wire harness from the igntion cylinder to the module is broken where it goes into the cylinder.
you can try using another igntion key, if still persist you'll need to get this fixed, sooner or later this will not allow you to start the engine.

Nov 02, 2009 | 1998 Chevrolet S-10 Pickup

1 Answer

1994 HONDA PASSPORT 2.4 CRANKS, RUNS 5 SECONDS, THEN DIES


I have a 2000 Honda Passport. Once mine stalled, it would not restart. Sounded as if out of gas. I thought fuel pump. Took it to service station. They found a short in the electrical system. The fuse kept popping. They replaced blown fuse in coil and module. The tested misc wiring in main harness. They found and repaired bad wires in main harness for module and coils in left front inner fender.

Dec 29, 2008 | 2000 Honda Passport

3 Answers

Security light


Does it have a factory alarm? Do you have a second set of keys, if so try the extra key first. Your keys should have come with a extra little chip not in the key that tells what resistor they need to replace the key. Your key has a resistor in it that allows the car to start so it could just be the key. If it's not the key that needs replaced then the alarm module under the dash is bad. Unless the resistor in the key did in fact go bad which I have never heard of happening, then that would be a cheap fix. If it doesn't work with the other key then the security module under the dash is bad but can be bypassed but you won't have an alarm. It's really a very easy fix. I've heard of the ignition and/or key getting dirty after prolonged use and have been told that you can clean the key by rubbing and eraser over the resistor a few times and then spraying an electronic cleaner in the ignition and inserting the key in and out while it's still wet. Haven't heard of that happening much at all though. Battery has to be disconnected to do that though or could cause more problems. Electronic cleaner dries really fast and wouldn't harm anything. If you want to spend $10 bucks to give that a try it might be worth a shot. The right way to fix it is the replacing the key or alarm module if it's not just dirt film. Theres a panel under the stearing column that you remove but I will have to do some checking to tell you where the module box is located but I doubt you want to do this yourself. I think the dealership has to match the key to the module unless you have the chip? Not sure if they can just use the bad key or not. Dealerships charge between $60 and $100 just to pull the vehicle in the door so pray you have that little chip or that they can just use the key. But CALL a dealership first and ask if they can use a bad key without having the little I.D. chip. I guess to answer your question YES it could very well be the key itself. Hope this helps some!

Nov 17, 2008 | 1992 Pontiac Bonneville

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