15GMCALLTERRIAN

So ive been seeing the conversion on 08-13 Sierras , and very popular on Silverados even the 14-16 conversions. On feb 1 some jack ass cut me off and hit my front bumper and fender , lucky for him i was already looking into doing a 2018 denali headlight conversion with the gen5 wiring harness and 2015 HD front bumper with 2500 all terrain grille To keep the theme going. As I researched could not find anything on the 2014-2018 sierras being converted to HD , all the guys i saw on IG with them had shops or buddys do them. Some guys welded either the 1500 or 2500 brackets lower ,enlogated the holes lower, redrilled , some had no gap -some liked oem gap between the grille/fenders. I did find two guys I kept intouch with they were a lot of help. One sent me pictures on how to re-drill the stock bumper brackets lower and cut some parts off it to clear the bumper , the other told me 1/2 above the existing holes . I took it upon myself to source a complete front bumper from ebay with everything $750 with shipping all i have to do is paint it , found a all terrain grille on ebay for $300 , had to buy the 2500 bumper guides and 2500 bumper fillers no luck on hood yet.while the parts arrived i bought the 2018 denali lights from fankie on here and the harness from gen5 easy bolt on by the way. When all the parts arrived i grabbed my grinder and drill . To start i took the 15torque head screws and 7mm from the sides of the wheel wells , took the 12 plastic clips from the upper cover , removed the 4 top 10mm bolts ,pulled off the bumper filler pieces between the grille and bumper , exposing the 10mm 4 bottom grille bolts , then removed the grille. Gaining access to the 4 18mm bolts that hold the bumper on the brackets, i loosened but did not remove till i went under the front bumper and removed the 2 outter 15mm bolts that hold the bottom of the bumper , i loosened the inner 15mm bolts but did not remove , once that was done i removed all 18mm bolts holding the bumper and took it off . Once off the stock 1500 bumper brackets have 3 15mm bolts in a triangle pattern, i removed all 6 and removed the tow hooks , the tow hooks will be eliminated from this . Once i had the brackets off i measured 1/2 inch above each hole . Now this is important if you want oem gap like myself i drilled a hole slightly bigger than the bolt going threw at the center of that 1/2 mark . If you dont want gap id suggest drilling under the 1/2 mark and possibly enlongating that hole down wards for adjustment. By drilling the hole a 1/2 inch higher it drops the bracket to clear the 2500 grille . In addition to redrilling the bracket you have to cut an L shape on top right next to the top bolt that the bracket has , i actually cut the bottom of the bracket and eliminated the bottom slot for the second 18mm hole because i was having issues lining up , ended up not being the problem , i found that out of the 6 15mm bracket bolts you only use 4 the top and inside 15mm the outter 15mm that completes the triangle actually hits the hd front bumper and it sags in the back ,so removing levels the bumper flush , i tried grinding the head down and still no luck removing was the fix. With the bumper off , you want to remove the 1500 bumper guides 3(7mm) bolts rachet wrench works best and socket aswell , install the 2500 bumper guides with same bolts same place these support and clip on to the new 2500 bumper filler pieces under headlights which youll have to buy . They clip and slide right on , the two bottom outter 10mm bolts that held the old grille will hold these in place and the other two 10mm in the middle from the old grille will be eliminated. See pictures.To finish securing the bumper filler and guides you have to screw the 7mm and 15 torque screws by fender trim , you will either have to buy the 2500 or 18 fender trim pieces or just trim yours roughly enough to bolt on the remark to trim perfectly and level like i did cant even tell .So Once the guides and fillers are installed grab the redrilled bumper bracket to your liking in gap, make sure its clearanced with the L shape you can rebolt bolt to frame leaving the outter 15mm off at that point you can lay the new bumper on the brackets rebolt the top 18mm bolts the bottoms wont line up -i eliminated by grinding off ,see pic -you can reconnect the lower 15mm outter brace and tighten , youll find out that it bolts right up and if you drilled at 1/2 center like me you keep that stock oem gap maybe a bit tighter gap actually but it looks good , you can then install the grille by pushing the clips in and only bolting on the the top 4 10mm bolts once done youll find that the gap is nearly perfect if you drilled at center of the 1/2 mark , some drill under the 1/2 mark to get less gap and some enlongate the hole lower towards the original hole to adjust and have no gap , but i see that as rubbing issues with paint. sorry for rambling on on the install , i will try to post all my pictures size will be limited and ill go back to proof read fix anything that i missed. Let me know waht you guys think or if you need help

Off the truck

Grille $300 bumper filler black -$100

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Selling my 2015 sierra all terrian front grille great condition painted plack chrome trim is vinyl wrapped black -$300 for sale is bottom bumper filler (piece between grille and bumper) painted black in great condition $100 ALL parts are OEM from ALL Terrain edition sierras still on truck nothing wrong with them , upgraded to HD front bumper ,located in CA shipping paid by buyer and can work with you aswell

Found the 5500k hid bulbs less blue , bump

Any updates? Im in the same boat , although ive heard that the stock bumper brackets work if you drop them about 1/2” and redrill im yet to verify but 3 guys that did it said they used the stock bracket and lowered it , 2 other guys said buy the hd bracket and weld lower , im hearing possibly 2500 bumper guides maybe needed

Im interested in doing a 2500 all terrain front end conversion on my 2015 1500 all terrain , i love the hood with scoop and lower bumper with chrome trim. Grille is similar but cant find anything on what parts are to be replaced. I would hate to start buying parts and realize it just is too much ro convert . My concern would be brackets for bumper and possibly fenders . Not fully engaged into it but id like to get a parts list and compare to see if i should go for it . FEEDBACK WELCOMED THANKS IN ADVANCE

Ill be selling my black colored oem grill soon its off my 2015 all terrain 350 plus whatever to ship

Looking for a 2015 2500 all terrain front grill

Looking for a 2017 gmc sierra 2500 hd hood

OEM Headlights from my 2015 sierra all terrain 1500. upgraded the bulbs to DDM 35w canbus ultra HID 6500k with OEM LED DRL's. The ddm bulbs are less than 3 months have second set of 5500k bulbs less blue than these pictures was matching led fog lights so i had two sets of headlight bulbs ,headlights are in good condition no cracks or broken tabs some normal wear light scratches from recent detail that will be buffed out prior to sale . Still on truck at the moment Willing to ship at buyers expense. 700 for everything located in CA

Interested pm sent

Thanks everyone for the replys , the current progress is that the 2.9 whipple kit has been ordered has a carb sticker and come with whipple tune easy bolt on and go . Ofcourse im looking to push the envelope still to squeeze out another 100-150hp . looking into but not committed to -e85 sensor -lt4 injectors -lt4 high pressure fuel pump -jose zambrano 535 intank -3bar map sensor upgrade -custom tune -ict spacers for whipple /lt4 pump or grind manifold Not sure if grinding the whipple manifold or using the ict spacers for the lt4 , the cost and all the extra is worth the hassle of possibly not passing smog . If smog wasnt an issue it all be worth it . I guess im still trying to convince myself if i should go all in and risk not passing smog. I want to believe thatbifbthe truck is tuned with the fuel upgrades correctly it should not have any issues passing but i have no clue if thats how it works

Man NOEL im in the same boat as you , what other mods and what power you put down?

i just got mine from beefcakeracing , paid 5994 shipped

Thanks for the info man, what mods did you do and hp range? I emailed new era but still waiting on reply

Anyone figure this out?

So still new to the forum have been searching a lot on here for those who have installed that whipple smog legal bolt on supercharger, i was debating with procharger in my last post but decided since i live in CA , whipple bolt on kit is the way to go , past up on the black friday deal but its coming back on Christmas so i plan on getting the kit that comes with the whipple tune bolt on with stock fuel system due to smog. Id like to convert the truck to e85/flex to see if i can squeeze some more out of it nothing crazy but i like to have the option of gas/flex/full e85. Honestly the goal is 500hp pasing smog . Even if its 91 changing pullies and not running out of fuel .I did look into the tuner kits but it does not come with carb number . I will eventually get my tuner to dial it in trying to not compromise that smog sniffer been following a guy on YouTube with the same build pmoore4321 he converted to e85 and installed low pressure fuel pump, lt4 high pressure pump and lt4 injectors. What ive been reading here on the forum is some only do the lt4 pump and injectors so im confused on if the low pressure is needed for upgrade ive been looking into adding the flex fuel sensor since my truck was not a flex fuel ordered the sensor and some racetronix quick disconnect fittings that are a bit better than the russell . Found that those LT4 injectors and pump numbers have changed quite a bit but have manged to find all the cross references (12710479) Injector High Output LT4 Replaces 12684130, 12686277, 12703612 Lt4 pump (12694529 / 12688607) Replaces 12642287, 12673410, 12679090

Do you have to do both high pressure pump(lt4) and low pressure pump in tank? In your case the aeromotive 450?

Thanks for the reply, i may just be over thinking this CA smog crap. Still undecided on the blower style , leaning towards whipple at this time but flirting with procharger . I may get either and add that flex fuel sensor or conversion then see what i can do with 91 Change the pulley and see where i run out of fuel injector or pump . Im thinking for sure ill need some more fuel if i go e85

Thanks , kit was about 1160 install was about 900 with alignment

Looking for a supercharger /procharger to just add a little more power and keep the drivability and smog working normal. I want to push it to almost the limit but still pass smog with cats on. Notnlooking to race but looking to have some power on tap really just Looking for input on bolt on kits and ive been leaning procharger kits that work my concern is smog . I dont mind adding more fuel or flex fuel id actually prefer to convert to flex instead of being limited to 91 but if 91 is the most simple to pass smog thats what ill do. Open to suggestions i like procharger sounds but whipple is fine too .Truck has 5.3 80k and only mod is CAI. some questions i have forbthose who have procharged or supercharged 1.was the DOD eliminated? 2.can you covert to e85/flex and whats needed 3.with flex is fuel tapped out on injector/pump 4.what would compromise my smog passing abilities 5. tuner or full kit?id prefer tonhave my own tuner to squeeze more out but is it worth it