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Found 18 results

  1. Hey all, I wanted to share my build log for my 2023 Sierra SLT. It's still a work in progress, but this information may be useful for anybody thinking of starting an audio project and navigating the mess of (mis)information between model years of the same generation truck. My goals for this project are Improve overall sound quality. My truck came with the Bose "premium sound" package with 6+1 channels of below average sound. Stock settings were not great and I was able to get passable sound by bumping bass to around +4, mids -2, and treble +4, but the configurability options are completely disappointing for a modern vehicle. I'm even more disappointed that somebody decided to brand this "premium" instead of simply writing "has speakers and amplification to reproduce sound." No need to lie to us... I think the only worse sound system I've heard in a modern car was from a Mazda MX5, but honestly, who cared about fidelity when the top was down? Be stingy where possible. I'm a sucker for punishment and doing things the hard way. I've been messing with car audio in some form for about 15 years now and while I learn and move forward, I've retained the "paying for installation is for suckers" mentality. Projects like these help keep me sane. Use quality components. Saving on the installation lets me spend just a little bit more on good equipment. Not the best, but not throwaway-tier trash. I try to source gear that will perform well and last. Rarely do I splurge for top-of-the-line stuff, especially for a loud pickup truck that's on kid duty for a nonzero amount of time. Keep some interior storage. I have pets and kids. It's useful to keep stuff under the rear seats for emergencies and I'd prefer to not have to resort to loose gear or worrying about cleanliness and upkeep of things kept in the bed. This means no monster multi-sub setups under the seats. Next up comes the component list. I'm aiming for SQ without breaking the bank. Full retail price (most of these can be had for less) is around $2k for a complete setup. Factor in another $100 or so for cabling and tools if you're starting from scratch. Pioneer TS-A709 2.5" speakers in the dash NVX XSP692 6"x9" speakers in the front doors Pioneer TS-D65F 6.5" speakers in the rear doors Alpine PXE-C80-88 DSP/Amp Fox Acoustics 12" vented sub box (passenger side) with storage cubby (driver side) NVX VCW122v3 12" 2 ohm DVC subwoofer (while the SI SQL12 is in transit, ETA March?) Stereo Integrity SQL 12" v2 2 ohm DVC subwoofer Dynamat Extreme bulk pack (referring to as CLD) Stage 1 I started out by replacing all of the speakers. Dash speakers are relatively straightforward to swap out. Two bolts behind each grab handle in the A pillars and some tactful pulling gives you access to pry up the entire front portion of the dashboard. Disconnect the blinking red LEDs and all that's left is two screws per speaker. The OEM speakers seemed to have identically sized magnets compared to the replacement Pioneers. I'm not entirely sure that the tweeter is real as I can't see any wires that run up to the center. If these end up disappointing, I've considered splurging for the Audiofrog GS25's as there's not a whole lot available in this size. Next up I replaced the rear door speakers. Removing two bolts in the middle of the pull handle of each door and an additional one along the bottom edge of the door card lets you tug the entire card up and out. Disconnect the wiring harness and then unclip and guide the little handle pull out and you can safely move the panel to another location. While in each door, I applied some CLD to approximately 25% of the skin of the door and around 50% for the inner portion, taking care to try and seal the cavity as best as I could. I then removed the OEM speakers held on by one bolt and pried the assembly out of the door. I didn't purchase any adapters, so I repurposed what the factory gave me. A large note of caution - do not use powered cutting tools while working on this plastic assembly. It smells absolutely awful and appears to be a fiber reinforced plastic. I first cut the cone and surround for the OEM speaker and tore out the top half of the speaker. I then used an oversized pair of channel locks to systematically break down the plastic support structure until I could remove the bottom portion of the speaker. I then channel-locked away some more until I was left with the shell with a roughly 6.5" speaker sized hole in the middle. It's a smidge too small for the Pioneer speakers I stuffed in with some foam to help the seal, but it worked well enough once motivated with some screws. If you go this route, you may have to modify the backside of the door card in the speaker area. I noticed that the replacement speaker is just large enough that the plastic supports collide with the metal mounting ring. In any case, I spend a little time applying more CLD to approximately 25% of the door plastic just in case. Might not be needed, but I'd rater not keep tearing into the doors. Replacing the front door speakers is largely the same as the rear doors. This time, the stock 6"x9" speaker mount could not be reused because the oval shape was too different. I drilled four small holes and mounted the NVX speakers directly to the door skin with some healthy amount of foam gasket material to keep the seal. One note is that if you apply aggressive sound deadening material to the door cavity, you'll either need to account for a protrusion from the door card or cut it off to allow for everything to come together. Photo of the area I'm describing. Stage 2 Here I performed a bose-ectomy in an attempt to gain control of the system. There's probably a dozen different ways of skinning this cat, but this worked out for my needs. You'll need to first run power from the battery to the back of the cab. I've taken a few photos of "lessons learned" areas that I'll upload later on. I found that running 4GA cable from the battery to the passenger side fender and through a grommet in front of the passenger front door was a great way to enter the cabin. Here, I ran the cable under and along the plastic trim all the way to the rear wall of the truck. There's some built-in conduit that GM has so kindly provided that works great. Photos of the passthrough for anybody who's curious. Next I removed the top portion of the rear seats. This entails removing all three headrests, prying the headrest receptacles out, and removing 4 bolts along the underside of the rear seat. You can then use whatever means available to release three latches along the upper portion of the seat to fully release the unit. Gently lift the seatback out and place it somewhere safe, because you may be spending a lot of time at this stage. There's plenty of space on the back wall for activities, but I wanted to keep the Bose amplifier close to the Alpine amplifier to minimize the amount of wirework I needed to do. I unbolted the black box (an inverter?) and placed it along the driver side of the cab with some toll pass velcro. It has worked well with heat in my experience. I then modified one of the Alpine's brackets by drilling some holes to fit where the inverter once did. This kept the two amplifiers close and cozy, ensuring that cable runs would be kept as short as possible. Next, I did some damage to the wire harnesses coming out of the Bose amplifier. One of the attachments to this post is a wiring diagram that tells us exactly what cables to cut. The X1 connector (top, 8 wires) carries the output for the front doors and the subwoofer. Cut all of those but keep the battery and ground. The X2 connector (middle, bunch of wires) carries the output for everything else. My truck didn't have any center channel speakers, so I cut everything. The X3 connector (bottom, 4 wires) carries the audio data from the factory radio to the Bose amplifier. In previous years it contained some sound canceling wiring, but that's not a thing for at least my truck. Ideally, we'd be able to use the raw unadulterated and unamplified signal sent over the bus, but entire companies exist to decode and sell expensive solutions for this. A DSP will have to do. I now have two connectors with cut wiring. There's a connector side, which basically takes the Bose output and routs to the input for the Alpine unit, and a harness side, which the Alpine unit outputs back into to reuse stock speaker wiring. This is why I wanted to keep cable lengths short. Nothing is less fun than crimping or soldering 12 individual wires, taking time to verify that you aren't crossing signals, more than two times. It wasn't even fun one time. Of note, the stock subwoofer wiring goes into the Alpine from Bose, but the harness side I taped off and fastened to the wall. We won't be using the stock subwoofer and removing it seems to be a colossal PITA and doesn't recover any useful space from under the center console. After getting the input/output connectors for the Alpine built, I went about applying some CLD to approximately 30% of the rear wall. I saw some other builds applying some CLD to the little vents and decided that I had nothing to lose, but that got annoying quick. I then finalized my wiring paths and used some adhesive clips to keep things tidy. A lesson learned for this step would be to pay attention to where foam is on the seatback. If you move the inverter, you may want to trim some foam near its new home. Once everything seemed to be ready, I began inserting connectors back where they belonged, wiring up the amplifier for power and ground, and getting the subwoofer cabling rear. I also made some space for the Alpine control unit running along the driver's side conduit, under the drivers seat, and to the middle console. It's just hanging out until I decide where I want to permanently mount it. Photo of the mostly finished setup. I connected power to verify operation and began reinstalling the rear setback. No nasty surprises or fires here, I still get sound and the Alpine unit connects to my phone over Bluetooth and the little control pad displays some basic information. Stage 3 I purchased a Fox Acoustics GM-CC-112-V-19-P-STORE subwoofer enclosure for under the rear seats. The driver side contains a large storage cubby while the passenger side is a 1.8 cuft vented 12" subwoofer box tuned to 33hz. I thought this product to be a good compromise between sound quality (low tuned vented, deep-ish subwoofer mount depth at 7.5" and interior storage space. I've moved the jack and tools, along with a first aid kit and small emergency bag in the storage compartment with plenty of room to space. I've made a small modification to the enclosure by adding a pair of terminals to the box to allow for a two-channel wiring solution for each of the sub voice coils. The Alpine amplifier doesn't allow a bridged sub output, so I need to run two sets of signal to the woofer to maximize available output. Once the SQL 12 comes in, I may replace the NVX unit. The NVX sub has a pretty beefy surround with 23mm xmax but I've seen no evidence of contact with the floor. So far so good. I set up the Alpine Optim8 using both my phone and a computer. The instructions were pretty basic and I'd argue slightly misleading. You will absolutely need a computer to set things up. The phone application will only perform the auto EQ tuning feature. The computer application lets you do everything else you'd expect from a DSP. There's lots of functionality that I didn't end up using, but the gist of my setup was to set the inputs and outputs and adjust crossovers to match the aftermarket speakers. I tested a few songs and noticed an immediate and positive change in sound quality for the better. I may keep tweaking down the line, but I'll probably hold off on anything large until the subwoofer comes in. Again, the sound quality with no subwoofers present (6" Bose sub was disconnected earlier) is already leaps and bounds better than what the truck came with. TODO: Upload newer photos of the measurements and auto-EQ lines. The End? If anybody has any questions, feel free to ask! Amplifier wiring.pdf
  2. Hay everyone, Just got a 19 Chevy 1500. Im looking to add a small sub-woofer. I need to find out the color coding on the wiring harness for the back left speaker. My amp has a high level input and I want to tap in in an easy spot. This picture is from right be the power seat adjustment control. does anyone have any subjection where I might find a wire diagram. Been looking but no luck finding it. May just be to new to have that info out in the wild....
  3. 2015 Double Cab with factory Bose center console subwoofer that needs some improvement. I’ve been researching our options and wanted some opinions. -JL Stealthbox center console. Is it enough? -JL Stealthbox under the rear seat. Worth the cost? -Kicker system. Easy install but wondering if it will be enough. -Box built with 2x10s. Any recommendations on boxes? Thanks!
  4. JL Audio Stealthbox model SB-GM-SLVD/10TW1/BK. Fits under the rear seat of a 2014 through 2018 Silverado/Sierra Double cab truck like it was built with the truck. Sounds awesome and plays just like new. I'm a SQ guy and no Basshead, so this sub was never played hard. Powered with a 600 watt amp for the past 4 years. Price is $900 and does not include shipping so please message me for a shipping quote. Price for new one is $1400. Thank you for your interest. Rick.
  5. Hello folks, I have a 2019 Silverado non-bose with the 8-inch screen. I am attempting to install my 10 inch Alpine Subwoofer and amp that was a holdover from other pickups that I had. I got all the wiring complete such as battery, ground, and remote switch at the F27 fuse. The amp turns on and everything appears to be working fine, except I have no audio inputs. I referenced the PDF install guide for the new Kicker subwoofer that is now offered for the 2019 Silverado/Sierra with Bose/non-Bose which tells me to disconnect two 28 pin connectors and locate a Blue and Brown/Blue set of wires. I am supposed to tap into those wires for my input. These connectors are supposed to be off the audio control module over by the glovebox, but I am having a difficult time trying to discern if I have the right connectors or not. Looking underneath my passenger footwell behind the glovebox I found this junction box with all sorts of wires. There are some blue and brown striped wires, but there also seems to be a couple sets of them. I just wanted to reach out to all of you and see if I am on the right track and I just need to dig further or if I need to look elsewhere. I am one wire tap away from getting this working. Thank you!
  6. Hey all, I recently purchased a couple shallow mount subs, a subthump box, and an amp/wiring kit for my 2015 GMC Sierra SLE. I also purchased this line output converter to get the signal to the amp from the stock wiring. I searched for "line output converter" and literally nothing came up on the forum, so i'm curious if anyone knows the easiest place to tap into to get the subwoofer signal to the amp? I'd greatly appreciate any help! My truck is a 2015 GMC Sierra SLE, does NOT have the Bose factory system. PAC LP7-2: http://www.pac-audio.com/productDetails.aspx?ProductId=1188 Gear i'm adding: 2x Rockford Fosgate P3SD2-12 1x Power Acoustik EG1-2500D -- wired to 2 ohms, about 800w RMS total subthump dual 12" box w/ amp rack space Thanks! Captain
  7. Can any give some insight on which wires are connected to which speakers on the green plug. I have attached a picture. There are a total of 10 wires and I’m assuming they are (LF+/-)(RF+/-), (RR+/-), (LR+/-) 12V and ground but do not know which goes to where. Any help would be appreciated! Thank you!
  8. Ok so I have looked everywhere and got some great info but can not find anyone who has installed a slim 8inch subwoofer behind the rear seat or under the passenger seat. I have a 2015 crew cab non Bose and my passenger seat is not power so I have some room. The Rockford P3SD48 P3 Punch Shallow mount 8-Inch DVC 4-Ohm Subwoofer I got only needs .40 cu ft per manufacture recomendations. So a pretty small sealed or ported box will do it. I got a Alpine MRV-M250 to power it. I'm going to run 4 awg marine power wire from my second battery and it should let me up the amp to 500w if this 8 inch does not cut it. As far as connections I'm pretty good to go but I'm looking for help with the placement of the sub box and would love to get everyone's thoughts. Not looking for a lots of bass just to help the sound quality out some.
  9. Anyone put a new Kicker L7 Thin in a 2017 Crew Cab Silverado/Sierra? Was thinking about putting a L7T 12 or 10'' under my rear seat. Pics of setup would be awesome.
  10. I am installing a 10” subwoofer in my 17 Silverado custom double cab with 7” touchscreen non bose. I have everything ran and wired except for my loc. I’d like to install it behind the factory touch screen. I can not seem to find the colors for the speaker wires anywhere. Every one I’ve found has a green plug and mine has a grey and brown plug. Can anyone tell me which wires are for the rear speakers? Thank you in advance.
  11. I am trying to add an AudioControl Line Output converter, and 2 separate amplifiers to my existing 2015 Sierra Crew Cab SLT Bose system. I'll use a 5-way amp to power the front, rear, and console subwoofer. I've got a sub amp to power dual 10" subwoofers in an enclosure under the back seat. I've looked everywhere for a 2014-2015 GMC Sierra aftermarket harness for Bose systems without any luck. Basically, I would like to fabricate a custom harness so that I don't have to totally splice into the existing wiring. That way, I can simply keep my existing bose system in place, and if needed for warranty or if I end up selling or needing to yank out the audio system, still keep factory in place. Also, I can't completely remove the factory Bose amp, because it handles other processing, like bluetooth, door chimes, etc. The amp will continue to power the two dash speakers, and have other low level inputs from the factory head unit, but all of the other speakers outputs (from Bose Amp) will be summed by the AudioControl LOC, then output via RCA to the two amps, with speaker level outputs from the amps back to the custom harness and out to the speakers. I've found an adapter from Metra for an amp bypass (http://www.metraonline.com/part/70-2057), which was made for non-bose, but will work for the female side of the custom harness on the bose system, but I need the male versions of the adapter as well to connect to the amp. If I could get the harnesses identified as #3 in the photo below, I think that will work. Then I just do all the splicing and electrical connections on the custom harness instead of factory wiring. Any idea how to find/order it?
  12. Hey all, we're a local Chevy dealer with a strong ecommerce presence. We have the lowest prices on the Kicker subwoofer package for the 2014+ Silverado & Sierra Crew & Double/Extended Cab sizes. Installation does not require dealer install. it is a plug and play package. We have guaranteed low prices that shouldn't be beat! GM offers a few versions of these units: -Double Cab and Crew Cab models have different parts numbers -GM offers just a sub upgrade, or the sub upgrade plus amplifier on the door speakers. *The standard Sub upgrade works with the Bose system. *The kit including Sub plus Amp on the door speakers will NOT work with Bose systems. For a price, please send us a message with your body style truck, and which kit you would be interested in plus your Zip Code for shipping. Everything is in stock ready to ship. Forum members will find that our prices on all GM accessories will be hard to beat. Please message me with any questions on this or any other accessory you may need for your truck. *** Currently running a little bit of a deeper discount on the crew cab models, with just the sub upgrade. Buy cheap, sell cheap is the name of the game ***
  13. I have a 2013 GMC Sierra 1500 SLT that I just bought and I am looking to hookup an after market subwoofer and amp but I like the stock dash look so I don't want to replace the stock radio (which would make this process a lot easier). Would I just replace the stock sub and amp and splice into the current wires? Could I keep the stock sub and amp also while connecting new sub and amp? Does the stock radio have RCA connectors in the back that I can connect too? In a perfect world I would be able to add a new sub and amp without replacing the stock sub and amp and still have a high quality sound system without using RCA plugs since I do not think they come on the back of the stock radio.
  14. I’m trying to install a powered subwoofer in a 2019 Silverado 1500 crew cab, 8” screen, no Bose system. Are the twisted wires in the picture the rear speaker wires? These run down the passenger side of the truck. Those are the ones I tapped into. The sub is getting power, but no sound.
  15. So I am soon to do a big install in my 15 Sierra double cab and I plan to mount my two amps, Lc7i, and the power and ground distribution to the back wall. I don't want to zip screws through the wall and I'm in need of a method to attach either a 1/2" piece of MDF or a piece of 1/2" PVC foam board. Which should I use and how to mount it to the rear wall? Thank you
  16. Hey, I'm getting an aftermarket subwoofer setup. I would Like to get a button to turn the amp on and off. Either for the seat warmer position or the bank of buttons below. Does anyone have a site where I could buy one?
  17. I bought this back in... 2013, from a dealer in McKinney, TX (Dallas) for my 2011 GMC Sierra SLT Crew Cab Z-82 Texas Edition. While I was finishing my 3" rear seat lift, Forward Firing Quad 8" 4.5cu ft NET dual ported box @ 31Hz, mounting my 5 Amps, sealing off every small hole in all 4 doors with 1/8" wood and Dynamat Extreme, my Focal Utopia 6W2 Components, Focal K2p PolyKevlar Comps, etc..... I ended up totalling my 2008 Sierra 5.3l the day before I received the Mechman Alternator. A lady pulled out on the 4 lane highway (speed limit 65mph) + middle turn lane, thinking the stoplight (in the middle of nowhere) was red, but it was green, so I never let off my cruise control, whixh was set to 69mph, 4mph over the speed limit. It was cliche. Everything happened in slow motion. I was just going to slam on my brakes and rear end her, probably giving her a 50/50 chance at surviving or swerve. But I saw a young, 4-8 year old girl in the passenger seat, so I swerved. Unfortunately, I hadn't cleaned off one of my wheel speed sensors, so my VDC wasn't working, so Iserved, thinking my VDC would save me from my sudden jerk of the wheel, but itdidn't, lost the rear end, swerved left initially, then right as my rear end got light, went across I front of her, swerved left and went straight across into a tree and rolled it 4 times. She stopped for a second, never got out and drove off. I had numerous people stop and help me. Most. who saw it, was angry at the car who clearly saw it, a few guys said I should have just ran her over. So anyway... my Mechman G-Series 270a Alternator with the optional $65.00 Billet Aluminum OverDrive Pulley came in the day after I totaled it. The OverDrive Pulley does two things. First, it lightens the unsprung rotational mass, therefore making it much easier to spin which equals more horsepower. 2nd and most important is that it allows much higher output and lower RPM's. I no longer need it as I never purchased another GM vehicle. It just happened that way. I ended up getting a Nissan Armada and now I'm in a 2011 Nissan Titan Pro-4X Crew Cab that I'm lifting 8" in the front & 9" in the rear. I believe I paid $600 total for it as I have the receipt. This fits all GM vehicles from 2004-2014 4.3l, 5.3l, 6.0l, 6.2l and many others such as 3.4l, 3.6l etc.. It fits vehicles with the 2-Pin Alternator Wiring Harness Plug. The alternator I was upgrading was the Optional AC Delco DR44 145a alternator, which is for sale also. Never installed, never mounted, never been inside an engine bay. I do know that the smaller pulley does not require a new belt. I paid $499 + $65 for the Billet Aluminum Overdrive Pulley + $20'ish for Shipping For Sale Price: $400 + Actual UPS Fully Insured ($500) Shipping
  18. I have a BNIB Mechman G Series 270a Alternator for the NNBS trucks. This will fit numerous other vehicles with the 2 pin plug which includes 4.3l, 5.3l, 6.0l and many others. I am just now getting around to posting everything up for sale which I am posting for sale on other GM Truck message boards. Holidays have been hell I am selling it in Brand New Condition with 10% off of the cost straight from Mechman + Free Shipping to the 48 states. So $479 – 10% = $431.10. I will make it an even $430 with Free Shipping. It has its factory warranty as I purchased it from an authorized dealer straight through Mechman. It's been a rough past several months... I was buying everything collectively over the past several months and would have had everything purchased and installed by now except earlier this year, I was rushed to the hospital where I was hospitalized for 3 weeks and had to have major abdominal surgery which took me a couple of months to recover from. I then resumed purchasing everything, but never got a chance to install. I totaled the truck in a rollover accident in late August where I had just begun my installation process which included removal of my rear seats, installing the 3" rear lift I assembled together, installed my 40 section of my 40/60 rear seats, installed my Dynamat, painted and mounted my amp rack backplate, ran one of my 1/0awg OFC power wire and was in the process of running my second run of 1/0awg power wire and had just built my fiberglass QUAD 8” 3.0 cuft net forward facing ported box tuned to 31Hz for my brand new 4 Sundown Audio SA-8 V.2 Stock SPL subs. This is how I had my new install planned out, which many of this is for sale. I had everything ready to install my new stereo which includes my 4 Brand New Sundown Audio SA-8 V.2 Stock SPL Model 8” Subwoofers, BNIB Audiopipe AP30001D 3000wrms amplifier, XS D3400 Battery, New Kinetic HC16V 16Volt battery with dual 12v and 16v battery post, my current Focal Utopia 6.5” Components installed in the front doors, my current Focal K2P 6.5” Components with Digital Design T1 silk dome tweeters for a more laid back sound installed in the rear, my current Focal PS 165 Performance 6.5” Components installed in my Q-Logic Kick Panels, New, but not installed yet Audiopipe AQX-360.4 4 channel amp, my currently installed Phoenix Gold Tantrum 500.2, 2 runs of 1/0awg OFC Cadence Cool Wire that I only had 1 run installed, several various distribution power fused and ground blocks and my currently installed JVC KW-NT800HDT 7” TouchScreen Navigation/DVD Unit. I was able to take the stock alternator, various interior plastics, Gorilla Locking Lugnuts, and some other items. I have the factory radio also. All of this is available for sale except the Gorilla Locking Lugnuts if anyone needs it for their NNBS truck. I will eventually begin posting the items, mentioned above, I have for sale soon. I know have a Nissan Armada SE 4x4 so I won’t need any of the factory items and many of the other BNIB Car Audio equipment. I am selling it in Brand New Condition with 10% off of the cost straight from Mechman + Free Shipping to the 48 states. So $479 – 10% = $431.10. I will make it an even $430 with Free Shipping.
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