LED Park Turn Signal Bulbs

Discussion in 'Chevy Truck Accessories' started by RagsCo4, Dec 7, 2011.

  1. RagsCo4

    RagsCo4 New Member

    Hey I am looking to change over the park/turn signal bulbs on 07 Silverado to LED bulbs, has anyone done this and how hard is it to do?
    I read on Recon's website that I would need to add resistors so as to no get that rapid flash. Any help would be greatly appreciated!
  2. pmf608

    pmf608 New Member

    It wouldn't be any harder than changing a normal signal light bulb - so long as the LED bulb you buy fits through the hole. Some are just a little bit bigger than the hole and would require some dremeling. I'm not really familiar with changing bulbs on the newer trucks so I couldn't say how difficult that itself would be. If your truck is an 07 classic, its super easy.

    I would suggest making sure you buy the brightest possible LED bulbs you can get because some of the cheaper (lower quality) ones won't put out much light at all.

    For the turn signal, you could add resistors but I'm not really a fan of putting those in the wiring. The 2007+ trucks can have the computer programmed for LED lights is your dealer is cooperative. You just need them to program it for the chassis cab lighting - that turns off the hyperflash because a lot of chassis cab trucks end up with LED lights on the back. If your truck is an 07 classic, you just need to replace the signal flasher with an LED flasher to disable the hyperflash without hacking up your wiring.
  3. ahmitchell1

    ahmitchell1 New Member

    Id also like to do this on my 09 for parking and turnsgnal and my tail light bulbs. has anyone done this
  4. RagsCo4

    RagsCo4 New Member

    Mine is the new body style Silverado. I never new that you could do that with the computer, thanks for the info. I plan on changing out the entire headlight assemblies with Spec D tuning CCFL projector headlights. Should look pretty good once I am finished. Thanks for the help!
  5. aloxdaddy99

    aloxdaddy99 New Member

    Can that programming change be made with a tuner?
  6. redneck70

    redneck70 New Member

    No, BCM reprogramming can only be done with a Tech 2.
  7. pmf608

    pmf608 New Member

    Yeah, your dealer would have to do it for you because it would require either a Tech 2 or the newer computer-interface unit GM has.
  8. ahmitchell1

    ahmitchell1 New Member

    sorry eletrical stuff is my weakness. yall are telling me if i switch out my front headlight turning signal and parking light with led bulbs i have to get a scan on my computer? i can just throw a resistor into the wire
  9. pmf608

    pmf608 New Member

    You can put a load resistor in and that will work fine. Personally, I love wiring stuff but I don't like the idea of modifying my tail light wiring to put a load resistor in there when there are other alternatives. If you want to have unmodified wiring without the resistors that create a lot of heat, then you go to the dealer and have them program for cab and chassis turn signals. It is up to you though - that's just the way I personally would tend to prefer.
  10. sstoner911

    sstoner911 New Member

    I changed my turn signals to LED...I did not add resistors...I did find a shop that had a Tech 2( shop that deals with electrical issues in vehicles)..they charge $92.00 per hour....but it gets rid of the hyper flash. Dealer wanted $126.00 to reprogram the BCM.

    Dont let the dealer tell you its not possible...when you see all these new work trucks with LED brake lights in the utility beds they dont have the hyper flash because the dealer changes the BCM!
  11. pmf608

    pmf608 New Member

    It's good to hear someone here has experience with the procedure I was suggesting.
  12. SurrealOne

    SurrealOne Former Member

    I like the idea PMF608 and I discussed that entails changing out the flasher module for something that's LED-compat. 35 bucks and 15 mins of time by the looks of it. :)
  13. ahmitchell1

    ahmitchell1 New Member

    I can probably get my hands on a tech 2. ima look into that goes i agree i dont like having to mess with stock wiring
  14. sstoner911

    sstoner911 New Member

    If your truck as a BCM you dont have a flasher module to change :)
  15. SurrealOne

    SurrealOne Former Member

    Hrm. Options aside from programming?
  16. sstoner911

    sstoner911 New Member

    Just resistors.
  17. pmf608

    pmf608 New Member

    This isn't fully correct. The BCM is just the computer under the dash... the 2003-2007's have them, my 2001 had one... they've been around for a while. The difference is that the 2007+ trucks have a lot more things controlled by the BCM (signal lights among them). This is why on 2007+ vehicles, the turn signal sounds come from the radio instead of a flasher unit.

    For 2007 classic trucks and older, there is still an actual flasher unit, so changing it out would be the way to go. For 2007 and newer, your choices are as sstoner911 said - either reprogram the BCM or put resistors in.
  18. Jaele

    Jaele Member

    I only know a little bit about this, i replaced my tail light on my bmw with a custom one on created, if you are going to create your own LED light you will need to have a resistor or else you will burn out the LED prematurely. In order or solve the rapid flash(the one you get when a bulb dies) you will have to run a parallel circuit and have it omit as much volts that are needed as if you have a working light. Hope this helps
  19. pmf608

    pmf608 New Member

    If you are designing your own LED circuits, then resistors in the circuits are essential to the functionality of the LED, but these are to not kill the light - they are different than load resistors. Load resistors simulate having the load of a filament bulb in the circuit to prevent hyperflash. The load resistors would be a lot easier than setting up a parallel circuit to simulate the load, but I personally wouldn't do either. I know BMW has had factory LEDs available on a lot of cars for years now, and many models have been programmable to get rid of the bulb check & hyperflash like the new trucks are for over a decade.

    Side note... I think its always cool when someone does up their own custom lighting projects.... do you have any pictures of those lights?
  20. sstoner911

    sstoner911 New Member

    Good point...I was strictly talking about the NNBS trucks, I should have been more clear :)

Share This Page