Post Reply 
 
Thread Rating:
  • 0 Votes - 0 Average
  • 1
  • 2
  • 3
  • 4
  • 5
2001 Silverado wiper/radio power issues
01-24-2013, 01:50 PM
Post: #1
2001 Silverado wiper/radio power issues
I have an 01 Silverado 2wd 4.3/manual in central Arkansas. My issue is when I turn the key off, take the key out and open the door, I still have power to the radio and the wipers. Everything functions normally other than what I just described. I do have an aftermarket CD player in it with a harness to connect the factory harness to the radio and all wires are hooked up correctly so I don't understand why this is happening. A local mechanic suggested that there is an internal short in the radio itself but I don't see how that would also affect the wipers. I'm not sure if there is a accessory delay as before I had this issue, if I turned the key off the radio would immediately turn off. Any help would be greatly appreciated as I'm getting tired of going through batteries!
Find all posts by this user
Quote this message in a reply
01-24-2013, 09:32 PM
Post: #2
RE: 2001 Silverado wiper/radio power issues
Your mechanic could be right. There are usually 2 hot wires to the radio. One is hot when the key is "on" or in the "accessory" position. This is the normal use power wire. The other wire is hot all of the time. This wire keeps the time on the clock, preset radio stations, etc.. I suppose it could be possible for the radio to short and back feed power back into the system. If the wipers are on the same circuit (fuse) as the radio, that is how they would get the power. You could look in your owners manual to see what all is on that circuit then check to see if they are all being powered along with the wipers. If you can get to the plug; unplug the radio and see if the problem is solved. If it is that would tell you that the radio is either wired wrong or it has a short.

I hope that helps. Please let us know what you find.

Thanks for using the forum,
Garner

Interested in Mining? Look here: Coal Mining, PA
Visit this user's website Find all posts by this user
Quote this message in a reply
01-24-2013, 09:43 PM
Post: #3
RE: 2001 Silverado wiper/radio power issues
Well if it's not raining ice out tomorrow, I'll get out there and unplug the factory harness from the radio harness and see if the wipers still function as described or if they work like they're supposed to. Being a teenager of the 90's I fully understand the switchable power(red) and constant hot(yellow) wires on the radio. I'll double check tomorrow.
Find all posts by this user
Quote this message in a reply
01-25-2013, 12:46 AM
Post: #4
RE: 2001 Silverado wiper/radio power issues
One other thing that comes to mind (because I have a fleet of GM stuff) is the delay that's built in until you open the door. Most GMs of that era allowed the radio to stay on for up to 5 (?) minutes after the key is off... OR... you open the door, whichever comes first. What I have seen is the door switch fails so people manually turn off the dome light, which means the radio can stay on after the fact. In your case, with a fancy model, there may be a body control module holding things on after the fact. What I am driving at is if pulling the radio harness doesn't solve the problem you may need to use a high end scanner to look at the BCM circuit. A simple code reader will NOT find this so you may need to shop around for a facility that has what you are looking for.

Let us know what you find as others may learn from your experience.
Find all posts by this user
Quote this message in a reply
01-28-2013, 08:11 PM
Post: #5
RE: 2001 Silverado wiper/radio power issues
Ok problem solved. When I hooked the radio up I didn't use butt-connectors to hook up the wires, I just twisted them together and wrapped them in some tape(electrical of course). I always wrap them separately with one piece then together with another. Apparently I had a small piece of one of my hot wires exposed when I went to tape them together so my Switchable power(red wire) was getting juice pushed through the constant hot(memory(yellow wire)). I disconnected the remote switch wire(blue wire) also to double check and make sure I wasn't leaching power from it also, reconnected all the wires with blade type quick disconnects and everything is functioning as it should.
Find all posts by this user
Quote this message in a reply
01-28-2013, 10:48 PM
Post: #6
RE: 2001 Silverado wiper/radio power issues
We really appreciate you taking the time to post that fix! So few people do that. That makes our job more interesting and it could help someone else.

Thanks again! Stop by any time.

Thanks for using the forum,
Garner

Interested in Mining? Look here: Coal Mining, PA
Visit this user's website Find all posts by this user
Quote this message in a reply
01-29-2013, 12:26 AM
Post: #7
RE: 2001 Silverado wiper/radio power issues
You're welcome, that was the easy fix, my main project of doing a solid front axle and LT1 swap into an 80 Luv 4x4, still sits awaiting my attention! Lol
Find all posts by this user
Quote this message in a reply
01-29-2013, 12:37 AM
Post: #8
RE: 2001 Silverado wiper/radio power issues
I was part of a swap like that so feel free to post some on the subject.

Going from memory it was a Luv 2WD with a 350 and a 4 bbl carb. My god, that was almost 40 years ago!

The main advantage to doing it your way is the older engine I used had a clearance problem with the distributor in the back. The LT1 has the ignition pack on the damper pulley area so more room in the rear. The disadvantage will be working out the details for the new fuel pump and a location for the ECM.

BTW, Howell Engineering makes a very nice stand alone harness for that application and can also supply an ECM without the anti-theft function that is usually found on OEM units.
Find all posts by this user
Quote this message in a reply
01-29-2013, 01:08 AM
Post: #9
RE: 2001 Silverado wiper/radio power issues
Yeah, this is an early LT1 with the optispark under the water pump. Luckily I grabbed the ECM with my piggyback chip out of the camaro that I took my engine and tranny out of. Between the two of them I have about $9500 into them. Powerbyace.com has the V8 swap brackets, cushions and the bracket for the 700R4 but that's a matter of money. My main issue will be a suitable alternative for the factory fuel pump since I know how thirsty these motors are(which is surprising considering before I turned it into a 383, I was easily getting 24mpg on the highway!) I will look into Howell Engineering into the possibility of integrating the two harnesses as I also have a spare LUV harness.
Find all posts by this user
Quote this message in a reply
01-29-2013, 01:23 AM
Post: #10
RE: 2001 Silverado wiper/radio power issues
Basically you need a fuel pump in the tank that can deliver enough pressure for the EFI. I don't recall if the tank configuration has changed over the years. Maybe you can put the two sending units on the bench and get out your welder to make what you need. (after the excess fuel has dried)

A few years ago I did an 87 Suburban with a similar swap and there was a "drop in" fuel pump to fit the OEM sending unit. Guessing all you need is a GM style pump that will deliver around 60 psi with a fitting for the return line.

Do yourself a favor and use high pressure hose with clamps. (old school) Most all of the OEM style fuel lines with those special fittings are discontinued every few years, meaning you will never get replacements down the road if you try to adapt something from the factory. As of right now I can't get replacement fuel lines for a 2005 Astro Van from the factory.
Find all posts by this user
Quote this message in a reply
Post Reply 


Forum Jump:


User(s) browsing this thread: 1 Guest(s)