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Comments
My next surround sound speakers will be Sony ones.
Think about those who were fooled into buying the Bose "Wave Radio/CD" system for home use. They paid $500.00 for a tuned wooden box with $50.00 worth of electronics. Talk about profit margin. When you are buying a Bose product, you're paying for the brand name. They are doing very well with all car makers from GM, Nissan to BMW, Merc. nowadays
jt
2014 Malibu 2LT, 2015 Cruze 2LT,
IS THIS WHAT OTHERS ARE EXPERIENCING????? - Keith
Yep...sounds like you have the same issue I have. My best guess is a "dirty" amplifier. My '06 Impala SS Bose system has the same issue. It's "normal" though, so don't be too adamant that the problem is with your car. I tried two others (show room) since I noticed mine and they exhibit the exact same hiss. I thought we (the forum) had narrowed it down to Bose systems but my boss has a Nissan Murano with a Bose system and his has no hiss. So, the common thread seems to be GM Bose systems.
What year is your GXP? Do you have the "Black Tie" edition head unit with the large volume knob in the center? Not that it really matters. Our friends in the forums are sharing stories of other GM vehicles with the same problem dating back quite a few years. I would love to learn that GM is going to make it right but I'm not holding my breath since it affects every unit, not just a few bad apples. Please share any info you get.
1. Speakers (placement, tuning, number of speakers, quality)
2. Audio Amplifier (Gain, Phase difference)
3. Vehicle Noises (wind noise, electrical noise,...)
4. Acoustic behavior of vehicle
5. Antenna (if listen to AM/FM)
6. Wire harness bundling (separation of noisy wires from audio line,...)and cable shielding,...
7. Audio system engineering of vehicle to make sure pops, clicks not preset when activate power door, windshield wiper, defroster,...
So apparently, the hissing sound was not either detected or not considered important by GM engineers while doing their validation works. Bose is still not in the clear if the Nissan does not make a similar noise. Most of the time, it takes more than one components to show the bad overall engineering design. In this case, it could be: "cheap" head unit + "expensive" Bose amp + somnething else?
jt
Well, if it helps in anything, the hissing is with the "premium sound systems" that are in the 06 impalas (aka... the Bose speakers). I have checked around with other models and such with the impala and the normal sound system seems to not have the hiss. Also, my husband has the bose speakers in his Silverado and there is no hiss coming from his speakers so who knows. I do agree with one thing for certain though... GM is deaf and absolutely will NOT acknowledge that there is a problem. It is extremely frustrating... and GM seriously wonders why they are getting beat out by the competition... if you don't put out quality products, people won't buy. The sad part about it all is that the Impala is a nice car ... and I'm a Honda owner!
At least the service department I've talked to acknowledges the problem although they consider it normal since they all do it. Sad thing is, I didn't even test the stereo when I test drove the car. I made the false assumption that a Bose system would be top of the line. I'm as angry with myself as I am with GM. But, I think our only hope is to talk to Chevy or GM directly. The dealerships can't reengineer the sound system. They can't fix something that isn't "broken."
Also, there very well could be more annoyed people out there just watching this thread for a resolution and not posting. It would be nice to see if there are more of us out there.
Believe me, I have been complaining since October. First, to Customer Service which is worthless, I have written several letters, one to Mark LaNeve -- no reply and to someone else at GM -- no reply. GM says it is not harmful, they are aware of the problem and there is no remedy at this time. Everytime I go to the dealer they check the bulletins to see if a solution has come through yet -- no. I am really fed up because it is annoying, and the fact that GM was aware of this problem in the 2005 GXP's and yet put the same piece of junk in the 2006 GXP really infuriates me. I have gotten nowhere. I have told GM that after having bought 5 Pontiacs from them since 1992, this will be my last GM car. When I get a Survey from them, I write on the top "I'll fill this out when you fix my humming/hissing problem." And, then I send it to them. They just don't care.
I do not think your GXP has the same problem as the 06 Impala. The problem with the new 06 Impala with Bose Amp/speakers is "all the time" hissing sound when the radio is set at the lowest volume level. That may be why other owners of the GXP are not too upset as the new Impala owners.
jt
Since we are an online community, we would really like the conversations to take place here on the boards. That way the exchange of information benefits the entire community, now and in the future.
Thanks!
Do not be fooled by the Black Tie appearance: not all of the Black Tie radios are created equal since GM now has more than one supplier for Black Tie radio family. GM like Ford, Toyota, Honda,Hyundai... now has multiple suppliers. Typical radios suppliers are: Delphi, VDO, F-Ten, Visteon, Panasonic, Pioneer, Autonet,...
So if one hears hissing sound on Impala 's Black Tie radio, it does not mean he will hear it automatically on Tahoe's Black Tie , or DTS's , HHR's.
jt
jt
Chevrolet Impala 2006+
Chevrolet Impala 2005 and earlier
I just wanted you to get your message in front of the widest audience if it wasn't about the radio.
'scuse the interruption!
Yes, I am referring to the Bose system. I will look on the car itself to get you a more accurate date, but the manufacture date on the sticker was for August of 2005.
Email me if you want to talk about it some more.
Do you have constant hissing problem in AM/FM modes or even in CD mode? If the AM/FM audio is corrupted but the CD audio is OK, then your problem could be caused by Electrical interference from the On-Star module (or others: ignition, fuel pump, motor controllers...) to the radio's antenna.
Other high speed digital systems like PC, DVD player, cellphones are known to jam radio frequency. That is why we are not allowed to turn on our cellphone and any electronic devices while airplane is taking off or landing (they are afraid of Radio Frequency Interference to plane's computers, GPS, ...)
Symptoms may be similar but the causes may be totally different. The GXP and Impala have different Head Units made by different suppliers and probably different Bose Amp/speakers setups. In addition, the vehicle electronics contents are different. Just one Ground wire could sometimes make a radio from being bad to good.
jt
1. Check on fuses that connect to the radio and/or Audio amplifier (using owner manual to look for them). By checking, you take the fuse(s) out and look at them to make sure they are OK. Another benefit: if the radio 's computer is brain dead, this procedure gives it a "RESET" just like when your PC at home hangs up that requires a push on the RESET putton. I used this procedure many times on my GM minivan when the power sliding door acted up (resetting the body computer that controls the power sliding door)
2. Your 2001 Impala radio does not produce TURN SIGNAL sound (or CLICK CLACK) so it is unlikely the radio failure would cause the TURN SIGNAL function to fail (06 Impala uses radio to produce the CLOCK CLACK sound however)
Radio needs the following signals to function:
1. 12V battery (always there)
2. Ignition (12V when ignition is on or vehicle is on ACC mode). Some GM vehicle does not use this wire since it gets the same information from the vehicle bus
3. Vehicle bus (CLASS 2 in this case) for VIN information power moding, etc..
4. Ground (power and RF ground for tuner)
5. 4 pairs of Audio outputs for 4 speakers
All of those lines are feeding to the two black connectors in the back of the radio. If any of those wires got piched, broken then your radio will not work.
jt
1.LF+ and LF- (Left Front + and Left Front -) to connect to Left Front speaker
2. RF+ and RF- to Right Front Speaker
3. RR+ and RR- to Right Rear Speaker
4. LR+ and LR- to Left Rear Speaker
The vehicle, if come with Power Amp option should have wireharness that provides the above 4 pairs of Audio from the radio. At the output side of the Power Amp (now missing), you at least have similar 4 pairs of the boosted signals (they go to the speakers). Now the trick is to find the match and connect them accordingly (ex. RR+ input to Amp to RR- output from Amp,...). So you need to know the pinout of the Power Amp for this task. Try to look up early information in this forum.
Good Luck
jt
jt
WZ
One thing I really admire about Bose: they're probably the most sucessful OEM Audio company in the automotive market. Their customers include quite a few high end American, Japanese and German car companies.
jt
As far as the hiss goes, I turned the radio to zero volume (nothing on the volume bar) and obviously heard nothing. Even one click up (when an active FM station is on or a CD) you can hear faintly the station or CD. There is no hiss -just the sound of the station or CD very faintly. When there is a station chosen that is not operating you can hear a very faint hiss like you would hear on any old fashioned radio as you are moving the tuning dial between stations. I can't hear the hiss when the radio or CD is playing normally even between CD selections. Hope this helps. If you have a really audible hiss on the first click that is different from mine I'd see the dealer. My car was built in March so perhaps they had fixed the hiss by then.