Adding LTZ LED DRL's 2014-15 Impala - Page 10 - Chevy Impala Forums
Chevy Impala 9th Gen Discussion Epsilon II 2014+. Discuss all Chevy Impala 9th Generation Performance and Technical Discussion here.

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Have to check the owners manuals for the stock bulbs. I figured the 2014+ used the same bulbs and the '16/ '17 wasn't listed on the charts ........no, had to return them because apparently the later models use, at least the 2017, the older 9005 bulb which were stock in the 2005 series Impala. And the stock Sylvania 9005SL+ wasn't too bad, but it can be upgraded through a series of increasingly brighter bulbs with an equivalent wattage.... the 9005 bulb has brighter retrofits that increase respectively in brightness, down road, side road and color (whiteness) .....progressive upgrades are Sylvania 9005 Silver Star, next 9005 Xtra Vision, next 9005 Ultra Hi Performance and next 9005 zXe Hi Performance.

I retrofitted the stock bulbs with the Sylvania 9005 Ultra Hi Perf. and the difference in better lighting and increased vision isDRAMATIC for a halogen projector....easily matches the LED projectors in my Silverado and HID projectors in the Malibu. Color is an almost match for the LEDs.....sorry I didn't go to the zXe for a perfect white match. Might just do it anyway....15 minutes total to install both and the washer fill pipe pops out for easy bayonet access from under the hood.
Well, I guess the stock bulbs for my 2015 are (9012's)
guessing I may have to experiment, I have heard the Silverstars have a pretty short life span(1-year? )
thanks for the suggestions.
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Well I have come to the conclusion that either there is a difference, between the LTZ bumper and the LS and LT bumper, or there is mounting hardware not included in the later.
or perhaps it is taken off at the factory.
It looks different because it contains the radar/ultrasound assembly in the front grille used for the adaptive cruise control not available on the LS/LT grilles and has white/silver inserts where the front covers mount, the openings and LED assembly mounts look the same
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Well, I guess the stock bulbs for my 2015 are (9012's)
guessing I may have to experiment, I have heard the Silverstars have a pretty short life span(1-year? )
thanks for the suggestions.
Sylvanias have only a 1 year exchange guarantee, but at under $35 a pair are worth it for the night lighting gain and will probably last longer if auto headlights used on LS/LT as DRLs are turned off and now run on the new LED as the DRLs

Sylvania makes an XtraVision upgrade for the 9012s which are the ones I first bought by mistake ansd Philips makes at least one upgrade also.
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It looks different because it contains the radar/ultrasound assembly in the front grille used for the adaptive cruise control not available on the LS/LT grilles and has white/silver inserts where the front covers mount, the openings and LED assembly mounts look the same
Okay, I will see what it looks like when I pull it apart.
gonna wait a bit, for some warmer weather, little chilly in Mn yet.
guess i could turn on the heater in the garage
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Thanks, I will see how snug they feel after I mount Them.
I did upload 2 pics, that show them mounted with all 4 tabs attached.

One pic is a LT or LS front bumper, the other is an LTZ front bumper.
above the DRL you can see the 2 tabs are screwed to a bracket, or possible part of the bumper, on the LT/LS those brackets are absent.
They'll be snug just fine on the LS/LT once you pop in the front cover which butts against the LED assembly......the other top screws you reference appear to be redundant and meant more to secure the radar/ultrasound assembly for the ACC in the LTZ grille than necessary for securing the LED assembly mount.

Also I couldn't wait and installed around 40 deg which is probably why I gave up on flexing to release the tabs to remove the OEM covers and just snipped them off.

Also have some duct tape ready to hold the flexible fiber covers back to the frame so you can get both hands easy access to the rear of the bumper.
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Originally Posted by Thomcat View Post
Sylvanias have only a 1 year exchange guarantee, but at under $35 a pair are worth it for the night lighting gain and will probably last longer if auto headlights used on LS/LT as DRLs are turned off and now run on the new LED as the DRLs

Sylvania makes an XtraVision upgrade for the 9012s which are the ones I first bought by mistake ansd Philips makes at least one upgrade also.
Well I got a little cheap and ordered the 100.00 harness, so my regular headlight DRL's will be on as well as the LED DRL's,

But as you said it's only 35.00 bucks a pair, so its not that big off an expense.
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Originally Posted by Thomcat View Post
They'll be snug just fine on the LS/LT once you pop in the front cover which butts against the LED assembly......the other top screws you reference appear to be redundant and meant more to secure the radar/ultrasound assembly for the ACC in the LTZ grille than necessary for securing the LED assembly mount.

Also I couldn't wait and installed around 40 deg which is probably why I gave up on flexing to release the tabs to remove the OEM covers and just snipped them off.

Also have some duct tape ready to hold the flexible fiber covers back to the frame so you can get both hands easy access to the rear of the bumper.
Thanks for the duct tape tip...good idea.
You may be correct, that the top 2 tabs are more for another purpose.

Gonna try and salvage my old covers, and either sell them, or I had an idea for a mod on them.
Thanks for the advice/tips
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Well I got a little cheap and ordered the 100.00 harness, so my regular headlight DRL's will be on as well as the LED DRL's,

But as you said it's only 35.00 bucks a pair, so its not that big off an expense.
Me too, I bought the non dimming system, but not just to save the bucks. I want the DRLs to operate totally independent of electrical connections to the stock headlight system, the non dimming are a straight hookup to an ign-on fuse in the fuse box......the dimming ones have in line taps for the headlights and have relays that dim the circuit when the headlights are activated and turn off on high beam. That is a lot of screwing around and failure of a bad connection will disable the main headlights or maybe screw up the high beam shutter circuit. Had a problem like that with a bad connection to the aftermarket hi beam dimming fogs on my Camaro.

I've driven at night and the LEDs at full brightness are not a problem for oncoming vehicles, actually they provide more side lighting making a turn at night.
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I actually got the dimming harness.
There were 3 I think.
DRL Brite all the time, with Headlight DRL on.
Then the Dimming DRL, with headlights on(which is what I got.)
Then the third, allows just the LED DRL's on during the day, with both on at night, with LED's dimmed.(which copies the LTZ)

And yes I hear what your saying about a bad connection, I was tempted to skip the harness and buy 2 plugs for the LED's, and go direct to the fuse box.

On a similar note, I was looking at the harness I got from the DYI site, which I will look closer when I get home.
It appeared to be assembled with crimp connectors, if that's the case, that's a little disappointing, for 100.00 bucks, I would have thought it would be soldered, with heat-shrink tubing at the splices.
Maybe I'm wrong, I'll look later.

Still great they make these harnesses, to give us options though.
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How are these holding up for everyone?
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How are these holding up for everyone?
Too soon to tell, but should last the life of the LEDs. for the simple harness for the non dimming type. They are directly wired to a power source using a fuse tap replacing the existing ignition on fuse in the engine compartment fusebox. No relays, in line headlight connectors, splices, etc as with the dimming types for potential problems.
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Same here only had them little over a year but no issues to speak of

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@Thomcat and @ICUBB Which set did you each purchase? Dimming or non dimming... The non dimming are easier to install?
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@Thomcat and @ICUBB Which set did you each purchase? Dimming or non dimming... The non dimming are easier to install?
DRL Conversion with Non-Dimming. I did not want my HID headlight bulbs acting as DRL's so I went with this option.

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DRL Conversion with Non-Dimming. I did not want my HID headlight bulbs acting as DRL's so I went with this option.
Used the straight non dimming....which were not only easier to install (cheaper too!) by eliminating series connectors for the headlamps and addition of new relays in the harness to control headlight operation, but operate independently of the main headlamp electrical system which is complicated, not only controls high or low operation but the shutters that cut off the beam.

Full brightness at night helps in turns and overall lighting. Installed 9005 Sylvania Ultras (16 & 17 only) which really improved native lighting and distance. I had inadvertently turned off the automatic lighting before backing out on a rainy night - I confused the left Impala headlight stalk for the left Traverse stalk which controls the wipers - and operated on only the full brightness DRLs for about 1 mile on unlit one lane back roads - thought the dim lighting I experienced was due to a really dark night, the rain covered blacktop soaking up the beams - and not a one of the 20 or so cars in oncoming traffic flashed for no headlamps, evidently mistaking the DRLs for main headlamps. Of course once I realized my mistake and turned on the headlamps and the difference was dramatic. Point being the LED DRLs alone at full brightness put out a decent amount of light and are at least as good or better than standard fog lighting.......after all the Impala DRLs use 6 Luxeon LEDs per side whereas the "official" fog lights on my Silverado use only 3.
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