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  1. I have a 2004 avalanche I change the head unit I went to Walmart In bought the plug for my new radio. plugged everything in and my front speakers do not work. I've heard and read A lot about the pre amp. But nobody explains how to do it In detail. I also have an extra plug with 2 wires that are inertwined with each otherI don't know what those 2 wires are or what they go.
  2. Hopefully I didn't miss this being posted already, if so, I'm sorry. I have a 2004 Tahoe, 2WD, 4.8L, 4L60E. Transmission went out, I have a 1999 Silverado 5.3L, 4L60E 4x4 with transfer case. The only thing I noticed different besides having the transfer case and extra plugs on the 99 harness for said transfer case, is the neutral safety switch on the 99 4x4 trans has a 2 plug harness vs my 2004 Tahoe trans with a single harness plug. Am I able to use this 4x4 trans in my 2WD Tahoe? I'm assuming I could swap the safety switch, and leave the front driveshaft off? Also finding a rear dr
  3. I installed a new JVC radio in my truck but both the driver and passenger speaker are not making any sounds. I suspect it's the wire harness not aligning with factory harness. Where can I find the right wiring diagram to rewiring the aftermarket wiring harness?
  4. I have a 2003 silverado with the 4.8l. Im needing a new motor figured a 5.3 would be easier to find and a better motor. But my question is what other year blocks can i use. Ive heard you can swap the 4.8 for the 5.3 with a tune. But could i fit an 04 - 06 block while keeping all accessories and fuel rails etc. I read in 04 it went to returnless fuel rails.
  5. I have a 2003 silverado with the 4.8l. Im needing a new motor figured a 5.3 would be easier to find and a better motor. But my question is what other year blocks can i use. Ive heard you can swap the 4.8 for the 5.3 with a tune. But could i fit an 04 - 06 block while keeping all accessories and fuel rails etc. I read in 04 it went to returnless fuel rails.
  6. Replacing Bose factory 6.5" subwoofer in the center consol with a JL audio 6w3v3. I have seen many people talk about doing this but have never actually seen anyone follow through. I also replaced my rear door speakers. Factory size is 4x6 and I put in 6x8. Made tempelate of speaker size and traced onto the truck door with sharpie. Then used tin snips to cut out the hole. It was super easy and there is nothing back there to get in the way. Then made a mounting ring out of MDF and a jig saw. Painted it black and put a foam sealer on it which pulled tight when I mounted the speaker.
  7. Hi hello, recently my v8 2001 1500 suburban rear end got destroyed, i have a v6 2004 Silverado 1500 with no motor, i was wondering if i can just swap the rear ends on them, anybody know if it will it work? What could be the problems if i do it and its not compatible???
  8. Hey there! After searching for the topic problems and implementing some of the advice, I've come to a place where I can't seem to find help around my unique set of issues. I've recently acquired a decently maintained '04 Silverado. I immediately ran into the blower problems so many have before me. The specific problem that manifested was two-fold: No A/C or intermittent A/C (it was intermittent when I bought it) After a day of driving, A/C never worked again and speed 5 stopped working. After research here, I found that the controller and harnes
  9. How can I tell if it’s a master or slave cylinder going bad? Seems like on a hard pull my clutch pedal is real soft and goes to floor easy and hard to change gears. When truck sits to cool I have hard clutch pedal again? Thank you
  10. I have a 2004 Suburban that has had a low idle (400 rpm) ever since I bought it. I've also had an intermittent no-start (cranks but won't start) that has been getting worse and worse and usually happens in the winter and it has now begun stalling especially when the engine gets warm. It only stalls when I'm parked. Is there anything that can cause a low idle AND an intermittent no-start? I'll explain the symptoms below. Low idle: If I just tap on the gas, it bumps up to 1000 rpm, then drops off unusually quickly and dips to about 300 rpm before slowly climbing back to 400 rpm, b
  11. Need your help on this one! Trucks been poping o2 low voltage codes at me p0131 p0151 etc, so I replaced the 2 upstream ones and it's still givin me upstream o2 sensor codes! Symptoms are lack of power from mid range up and it seams to shift kinda funky somtimes
  12. On a 2004 Silverado C1500 WT, I’m adding mirror with temperature/compass trying to get as close to factory default installation as possible (aka no splicing/soldering). I saw the Chevy trailblazer forums and followed their advice, but I ran into a snag when installing the temperature sensor under the hood. The pins appear to be different from my donor vehicle (2004 Chevy Trailblazer) for the sensor under the hood. Does anyone have any photos of where the ambient temperature sensor connects to on a Silverado (I.e. Pin outs)? I’d like to make sure I’m not doing something stupid lik
  13. Hello gentlemen! and maybe ladies, I have a 2004 Silverado, 5.3 liter gas only, with problems, It began with Knock Sensors low voltage. Both were replaced. No luck! I replaced the knock sensor harness, no luck. My reader still shows lo voltage on sensors bank 1 & 2. I had a suggestion to replace the O2 sensors. Even though it's not showing on the code reader, i was told to change them. On my reader, I have a live data view and Banks 1 & 2, upstream Sensor are reading all over the place. It's almost a saw tooth pattern. Is this normal? At idle, it misses randomly. At ful
  14. Was driving the other day and noticed my left turn signal was constantly on . Checked all bulbs even replaced a few just in case . I unplugged relay and still left turn was on. Didn't see a reason to replace it since at the time it didn't seem to be the problem. Now after a few days of this I noticed the dash warning lights blinked on as I was driving . Like the truck was being started. The Multi-display even went into the block pattern boot up. Right turn works fine and sometimes left will blink until I step on brake light. then it displays always on ( sometimes left will go out when driving
  15. Alright! my silverado has the infamous stuck speedo and tachometer, wondering if anyone on here has actually repaired them your self, like with those cheap little motor kits. is it worth it!?
  16. About to undertake redoing both my front axle seals in my front end, got a 2004 Silverado Z71, anyone done this on jack stands before? pictures and tips would be greatly appreciated!
  17. Alright so need the help of GM trucks for this one! First off I have ready lift 2.5in torsion keys in the front of my 2004 silverado Z71 and they are pretty much jacked. I noticed that my 4x4 is catching oddly, its engaging fine and no warning lights. basically when in 4x4 and apply alittle gas on pavement it pulls side to side and the wheels are catching differently to the ground and shakes the steering wheel, it does this to dirt aswell
  18. So recently picked up a Hypertech Max energy (32000 model/ updated) from a friend for a 100 bucks, seems to work really well! noticed its got little more balls and the shift points really woke er up! Curious to see what everyone is running for settings off these things!
  19. 2004 GMC Yukon Installed an aftermarket radio and custom LED lights now when I use my keyless remote to lock the truck and shut the door you can still hear the door chime and it's chiming really fast and doesn't stop and eventually the battery drains. But if you open the door back up and stick the key in the ignition and turn the car on it stops. If I do not use the keyless remote to lock the car and use the door lock then everything's fine. When I unlock the car with the keyless remote everything is fine the issue is when I lock it with the keyless remote this is when I have this problem An
  20. Good morning, everyone! I'm new to the board but I hope to frequent it pretty often instead of being one of those one and done posters. So, here's my situation: My 2000 Silverado 1500 z71 transmission is getting pretty tired (215,xxx miles) and I've picked up a wrecked donor 2004 Silverado 1500 with a rebuilt transmission that I know to be functioning well. Both have the 5.3L with the 4l60e trans. I'm looking to swap the engine and transmission from the 2004 into the 2000 - my thought is everything will bolt up properly due to not much changing between 99 and 06. My concern is can
  21. Hey! I have a 2004 GMC Sierra 2500 crew cab 4x4 short bed, 4 inch lift with 17 inch wheels. I'm looking into a suitable camper for my truck. Lance advertises the 2500's as a suitable truck for the 855s model, but it is obviously well over the payload capacity when wet.... before adding everything else to the equation. Does anyone here "push the limits" successfully? I know all about the insurance issues with a set-up like this. Airbags and E-rated tires are on my truck as well. Thanks for your replies in advance.
  22. Hi, Richard from Pleasant Lake, Michigan. I have a 2004 Chevy 2500HD with the 8.1L Gas, with 44796 mileage, but 7400 hours on the engine. I bought this used from a dealership over a year ago and am now having issues with the truck. I have been having problems with the Yellow Engine symbol showing up and Reduced Power showing in the DIC window. Plus I am hearing what sounds like predetonation/ rattling from the engine when I give it gas. The engine runs ok, but there is more to the noise than a smooth running engine, kinda like a rumbling. Can anyone help me figure out what is causing t
  23. I need some help guys, I have a 2004 Sierra 2500HD crew cab 4x4 6.0 gasser. Recently I noticed that my right turn signal was blinking very fast. So first thing I check was the bulbs and they all checked out fine. Then I noticed the the right signal will only blink fast when the headlights are on?!? Nothing changes on the left side. Left side works with headlight on or off. I took the right for or apart to look for grounding wires and anything else that would stand out. Noticed the right side DRL socket was burnt up so I replaced that but it didn't help the signal. I am stumped on this one plea
  24. My 2004 Silverado 4wd truck has some loud clunking and grinding coming from the front-end driver side at all speeds. It almost sounds like driving and hitting many bumps/cracks in the pavement along with a loud intermittent grinding. This noise seems to lessen quite a bit if I put the vehicle in 4wd, seems worse in 2wd. Would this be a wheel bearing, front universal joint, or front axle bearing? Anyone else have this problem and find the cause? Right now I drive the truck 50 miles to work and worried it might not make it home without a wheel falling off the way it sounds. I have an appointment
  25. New to the forum, new to diy car repair. I have a 2004 Chevy Suburban Z71, 130k miles. Runs and drives great, but when we first start the vehicle, the power steering is non existent until it warms up a little. There is no power steering to the left or right. Once everything warms up it drives fine. I've read some people suggest power steering flush, there is air trapped somewhere, power steering pump replacement, and intermediate gear box replacement. I am doing all repairs myself these days, any help would be greatly appreciated!!
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