Jump to content

HELP! Tow mirror electrical issue

Dersch

By Dersch
in Modifications & Accessories

Recommended Posts

Dersch Enthusiast

Dersch

Posted
Posted

2015 silverado 1500 LT (with non-tow mirros stock DB8?)

While i was getting my lift kit installed i had planned to get new tow mirrors installed https://www.ebay.com/itm/14-16-Silverado-G2-Power-Heated-LED-Arrow-Signal-Extendable-Towing-Mirror-Smoke/233104518338?hash=item36461cacc2:g:C6AAAOSwhu9cRobZ:rk:2:pf:0

Stock i have manual fold, power glass adjust. (not sure on power heat i dont see the symbol on them tho)

So the shop ran into some issues unfortunately and i want to figure out why and take advice before i fry some more switches or something worse. So they installed the mirrors and they bolted up perfect. They said they had some trouble getting the turn signal on the glass to function. I wasnt worried or surprised about that because mine doesnt have it. They said the marker light on the front functioned fine tho. So they went to put the truck back together and then they found out that they couldnt adjust the glass. They said they could adjust it left and right but not up and down at all. Re-installed the stock mirrors still no go. They ended up using a shop owners silverados switch and the stock mirrors worked fine. Long story short thought it was just the switch but it ended up being something more. They ended up frying his switch and 3 others before they decided that the harness on the mirrors is probably the issue... now whether its defective/ wired wrong causing this to happen or if its cause it has features my truck doesnt im not sure. But they put stock mirrors on and new switch and im good so far. 

I really want tow mirrors but dont want to fry anymore switches or something worse. I know some people have had to use harnesses but i have seen many others post up that everything works fine without (minus functions like the turn signals). So what do you guys recommend i do? I dont want to spend $500 like some people have on mirrors and harnesses. I am looking at these mirrors https://www.ebay.com/itm/Tow-Mirror-Power-Heated-Textured-Black-Pair-Set-of-2-for-Silverado-Sierra-Pickup/311953989815?fits=Year%3A2015|Model%3ASilverado+1500&epid=2072499600&hash=item48a1e820b7:g:RfwAAOSw6fpbWZHt:rk:40:pf:0&LH_BIN=1 which dont have lights or turn signal so maybe itll work? It does have heated feature tho so im not sure. 

I also saw this harness https://www.ebay.com/itm/Genuine-GM-Mirror-Jumper-Harness-23387133/163075522996?hash=item25f80f01b4:g:~NwAAOSwpHpbENx2:rk:1:pf:0 listed under many of the listings descriptions saying its needed to make them function. however looking at those connectors it doesnt look like the square one that they come with. But they advertise that trucks without stock lights can then run mirrors with turn signals and clearance lights with this harness. is that true? Lights are not a neccesity but i like the look. I would prefer clearance lights over turn signals if it comes down to it.

I requested to return the current mirrors i have cause i dont want to take a chance of them being defective and frying more switches

Dersch Enthusiast

Dersch

Posted
  • Author
Posted

OR if someone has done this upgrade before and has installed manual fold, power adjust glass mirrors without issue please let me know what ones you bought. 

pgamboa Senior Enthusiast

pgamboa

Posted
Posted

See my responses inline.

 

 

2015 silverado 1500 LT (with non-tow mirros stock DB8?)

While i was getting my lift kit installed i had planned to get new tow mirrors installed https://www.ebay.com/itm/14-16-Silverado-G2-Power-Heated-LED-Arrow-Signal-Extendable-Towing-Mirror-Smoke/233104518338?hash=item36461cacc2:g:C6AAAOSwhu9cRobZ:rk:2:pf:0

Stock i have manual fold, power glass adjust. (not sure on power heat i dont see the symbol on them tho)

So the shop ran into some issues unfortunately and i want to figure out why and take advice before i fry some more switches or something worse. So they installed the mirrors and they bolted up perfect. They said they had some trouble getting the turn signal on the glass to function. I wasnt worried or surprised about that because mine doesnt have it. They said the marker light on the front functioned fine tho. So they went to put the truck back together and then they found out that they couldnt adjust the glass. They said they could adjust it left and right but not up and down at all.

 

******

 

This is a usually a symptom of using mismatch harnesses. Do you know if they swapped the door harnesses for simply plugged the mirror in to the factory harnesses?

 

*****

 

Re-installed the stock mirrors still no go. They ended up using a shop owners silverados switch and the stock mirrors worked fine.

 

*****

 

 

If they had to force the switch (there are two types and at keyed differently for differently options), this will blow a fuse for the adjust.

 

*****

 

Long story short thought it was just the switch but it ended up being something more. They ended up frying his switch and 3 others before they decided that the harness on the mirrors is probably the issue... now whether its defective/ wired wrong causing this to happen or if its cause it has features my truck doesnt im not sure. But they put stock mirrors on and new switch and im good so far. 

 

*****

 

If you can supply part #s to the switches, I can tell if they are keyed different.

 

7802f92a64be071d8bc3791f45ddf848.jpg

 

I really want tow mirrors but dont want to fry anymore switches or something worse. I know some people have had to use harnesses but i have seen many others post up that everything works fine without (minus functions like the turn signals). So what do you guys recommend i do? I dont want to spend $500 like some people have on mirrors and harnesses. I am looking at these mirrors https://www.ebay.com/itm/Tow-Mirror-Power-Heated-Textured-Black-Pair-Set-of-2-for-Silverado-Sierra-Pickup/311953989815?fits=Year%3A2015|Model%3ASilverado+1500&epid=2072499600&hash=item48a1e820b7:g:RfwAAOSw6fpbWZHt:rk:40:pf:0&LH_BIN=1 which dont have lights or turn signal so maybe itll work? It does have heated feature tho so im not sure. 

 

*****

 

These mirrors are from AM Auto and will work with your factory door harnesses and switch. Since they don’t have any lightning, it should be PnP

 

*****

 

I also saw this harness https://www.ebay.com/itm/Genuine-GM-Mirror-Jumper-Harness-23387133/163075522996?hash=item25f80f01b4:g:~NwAAOSwpHpbENx2:rk:1:pf:0 listed under many of the listings descriptions saying its needed to make them function. however looking at those connectors it doesnt look like the square one that they come with. But they advertise that trucks without stock lights can then run mirrors with turn signals and clearance lights with this harness. is that true?

 

*****

This harness is a “Jumper Harness” and is ONLY needed if your truck doesn’t have pin 9 and 11 loaded on the CAB side of the door jamb connector. This harness goes inside the cab and under the hood for the cargo and running light circuits.

 

For mid year 2015.5 and later, GM delivered these circuits to the door jamb.

 

Here is a pic that will show you what to look for.

 

52f5f76d27ab0a2c0846bcb936bf9885.jpg

 

*****

 

Lights are not a neccesity but i like the look. I would prefer clearance lights over turn signals if it comes down to it.

I requested to return the current mirrors i have cause i dont want to take a chance of them being defective and frying more switches

 

*****

Many of these sub $200 are of very low quality. Many of them have their running lights and turn signal light circuits tied together behind the glass. This is problematic. Another common issue is the passenger side mirror has its adjust controls backwards. Up/down moves the mirror right/left, and vice versa.

 

So it sounds like you have a number of potentially compounding issues.

 

I have helped over 3000 members here successfully perform this upgrade and offer custom harnesses for PnP functionality.... but have to take things one step at a time.

 

I can recommend a good set manual fold aftermarket mirrors (in the $300 range) that will give you turn signal, running light and cargo lights.

 

The door harnesses I build run $285-$310 for the set but comes with a $100 refund if you send me your factory harnesses once done.

 

A new switch is only needed if you go with power Folding mirrors.

 

Hope this helps.

 

Thanks,

 

Phil Gamboa

 

 

 

 

Sent from my iPhone using Tapatalk

Dersch Enthusiast

Dersch

Posted
  • Author
Posted
22 hours ago, pgamboa said:

See my responses inline.

 

 

 

 

 

 

Sent from my iPhone using Tapatalk

This helps alot and I'm going to try to answer all your questions. 

They simply tried to plug the mirrors into my factory switch.

I have the far right switch for the mirrors. It just had the directional plus chose drivers or passenger side. 

So those AM auto mirrors from Ebay for about $140 should be plug and play? I want the mirrors more than the lights. the lights I could care less about. Just a bonus really. 

I dont think i can justify $300 mirrors + $300 harness when ive aleady wasted money at the shop this round. 

If I can use those AM auto mirrors and be PnP I'll be satisfied. Thoughts?

pgamboa Senior Enthusiast

pgamboa

Posted
Posted

Best bet is the AM auto mirrors, no lights... should be PnP.


Sent from my iPhone using Tapatalk

Dersch Enthusiast

Dersch

Posted
  • Author
Posted
3 minutes ago, pgamboa said:

Best bet is the AM auto mirrors, no lights... should be PnP.


Sent from my iPhone using Tapatalk

In the off chance they are not. What do you recommend?

Archived

This topic is now archived and is closed to further replies.

Go to topic listing

  • Recently Browsing   0 members

    • No registered users viewing this page.

  • Forum Statistics

    250.4k
    Total Topics
    2.7m
    Total Posts

  • Member Statistics

    342,842
    Total Members
    8,960
    Most Online
    CaptainDad
    Newest Member
    CaptainDad
    Joined

  • Who's Online   4 Members, 0 Anonymous, 484 Guests (See full list)

  • Latest Articles

  • Posts

    • asilverblazer
      Slate Electric Truck

      By asilverblazer · Posted

      I like the idea.  I would pick diesel if I had a choice. I need pictures though.
    • newdude
      Help purchasing a touch screen digitizer

      By newdude · Posted

      I've installed cheap eBay new aftermarket digitizers before.  They work.  Did a bunch of Cadillac CUE (aka Cadillac's MyLink) for someone years ago.  They all worked fine after the repair.    That number 22740886, that is a component part # for GM.  You can use it to search, but its not something that's obtainable at the dealer level.     So pretty much any of these will work - 2015 Colorado Digitizer for sale | eBay
    • asilverblazer
      give me some tips to make my truck look better

      By asilverblazer · Posted

      Black bumper and the later years Z-71 style color matched grille.
    • fondupot
      Exhaust heat while towing!

      By fondupot · Posted

      You can install tailpipes that direct the exhaust sideways vs the OEM one that goes straight back. There are several on the market, do you own research. HOWEVER, you need to make sure the Venturi vents are still intact, otherwise it will throw a engine code. There is a sensor somewhere that detects back pressure on the exhaust. And if it doesn't collect the correct metrics, it will throw the truck into limp mode. 
    • Atlas
      Wow I'm in a pickle. (Broke down truck) and a story.

      By Atlas · Posted

      "Teardown" is complete. Head surfaces are clean and ready, new intake is prepped and ready. Coolant drained and water pump is removed, radiator is removed, new hoses and pump are ready.   The replacement intake is also from a '95 (with I think 260k, the odometer said). Noticeably less pitting where it covers the rear coolant passages. I'm not sure if that's a tribute to more frequent use, more frequent coolant changes/upkeep, or if the intake was machined at some point. But it appears I found a good one.   My coolant hoses were original, and the lower hose still retained the factory spring inside. It's not really rusty, but it's got deposits all over it. Unsure if I should re-install it (will thoroughly clean it first). Someone said hose technology has gotten better since 1995 (has it?) and I don't need the spring. I think modern EPDM is what made those hoses last from 1995-2026, so it's a question of how much suction can the water pump really pull, and will it collapse the hose without a spring?   I'm stopped and waiting for parts, however.   When I first brought the truck home, the fan was intermittently hitting the radiator shroud. I could see someone had monkeyed with the shroud (put a bunch of cardboard as a spacer between the upper/lower shroud halves. Someone said the motor mounts have likely failed and the engine has sagged. I wasn't sure I believed that. The engine is really solid in its mounts: To remove the old intake I *just* nearly permanently welded to the heads with freshly cured RTV and gasket snot two weeks ago, I literally had to use the arms on my lift and a chain with a bolt attached to the intake to pull it loose. It almost picked the front of the truck off the ground before ....scuuuuuuuuuuup.... I could actually hear the gaskets tearing and it broke loose and the whole truck settled back down. Motor barely moved.   SO, those parts I'm waiting on... The lower radiator mounts/bushings had completely failed. The radiator needs to be insulated from the rad support, and the bushings help the rad stand at the correct height. The plastic "baffle" was also destroyed at some point. Someone had attached the shroud to it incorrectly, overlapping a joint that should have been underlapped, creating another suspect issue potentially causing things to hit the fan. Broken tabs, side is busted off, and it's perma-formed/bent where it was jimmied incorrectly.   The baffle? Unobtainum. Long since discontinued from GM, of course. Aftermarket/capa/chinese? Also unobtanium. In GM's infinite wisdom, it appears there are at least two different variations whether the Blazer is 2 or 4 door, and I can't yet tell if they shared the same part with the S-pickups. Plan B, if I can't find a viable used one, will be to create a bracket to re-assemble the critical joint I need to seal a gap with the shroud. But that will bug me, it won't be...perfect.   The water pump bolts appear to have been installed with...plumber's putty. I guess, sure, if it works...? I've found a few "backyard fixes" like that. Someone's been here before....   If I can't find someone to jam bamboo under my fingernails to fill my free time this week I think I'll install the driver's power window motor and replace the rear door speaker that's inop. I've got a genuine GM "9.5" ohm working replacement. Why GM used a non-standard resistance....nevermind. Of course they did, you can get more sound from a cheap factory amp that way.   And the saga goes on...

  • GM-Trucks.com Clubs

  • Popular Contributors

×
×
  • Create New...