Question about 2007 GMC Sierra 1500

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D TC B1025 AND B1045 ENGINE CODES - 2007 GMC Sierra 1500

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Does your radio works? this dtc sets when the left channel of audio system failed, remove radio and check speaker wires for short or oen, if good change the amplifier or need for repair

Posted on Sep 03, 2010

Testimonial: "LEFT CHANNEL IS OUT ON RADIO, RADIO HAS BEEN SENT IN FOR REPAIR THANKS"

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Lost sound on 2005 impala. radio works. seems like amp problem.


Do you have base or up;level system ?

Table 1: Radio Features
Table 2: Cassette Features
Table 3: Compact Disc Features
Table 4: XM Advisory Messages
The radio receives power from the RADIO fuse in the junction block-right I/P. Ground is provided via G201 and G202. The radio is enabled/disabled by class 2 messages from the body control module (BCM). The radio routes audio signals from the digital radio receiver or the vehicle communication interface module (VCIM) to the speakers and/or amplifier when directed by class 2 messages.
The Entertainment System on this vehicle is configured with an AM/FM stereo radio with the radio data system (RDS) and either a cassette player or a CD player or both. CD and cassette. The uplevel system provides the customer with extended range speakers and an audio amplifier. Satellite digital radio (U2K) is available with uplevel systems.
The following list shows the radios available for this vehicle:
• Radio (ULO) - AM/FM Stereo, Cassette with RDS
• Radio (UNO) - AM/FM Stereo, CD and RDS
• Radio (UPO) - AM/FM Stereo, Cassette with CD and RDS .The complexity of the radio systems on these vehicle is mind blowing .

Your best bet take it to a GM dealer , has features you are unawear of .
DTC B1025, B1035, B1045, or B1055
When the radio is powered up, the radio supplies low level audio signals to the speakers. If the vehicle is equipped with an audio amplifier, the amplifier will boost the signal sent to the speakers.
DTC B1025 Audio Output Circuit
Install a scan tool.
Turn ON the ignition, with the engine OFF.
With the scan tool, monitor the DTC Information for DTC B1025.
Does the scan tool indicate that DTC B1025 is current?

Jan 31, 2017 | Cars & Trucks

1 Answer

Having trouble with all my speakers except my twitters in a 2007 Saturn Outlook...what do I start with? Fuses are good


Speakers get power from the amp if your system has one or from the radio , if the tweeters work it's not a fuse problem . You like listen to your stereo loud . Blew a channel in the radio or amp ?
Take it and have it checked for DTC'S - diagnostic trouble codes
DTC B1025 01: Audio Output 1 Left Front Circuit Short to Battery
DTC B1025 02: Audio Output 1 Left Front Circuit Short to Ground
DTC B1035 01: Audio Output 2 Right Front Circuit Short to Battery
DTC B1035 02: Audio Output 2 Right Front Circuit Short to Ground
DTC B1045 01: Audio Output 3 Left Rear Circuit Short to Battery
DTC B1045 02: Audio Output 3 Left Rear Circuit Short to Ground
DTC B1055 01: Audio Output 4 Right Rear Circuit Short to Battery
DTC B1055 02: Audio Output 4 Right Rear Circuit Short to Ground

Each of the audio output channel circuits (+) and (-), at the radio and audio amplifier (if equipped) have a DC bias voltage that is one half of the battery voltage. When using a DMM, each of the audio output channel circuits will measure approximately 6.5 V DC. The audio being played on the system is produced by a varying AC voltage that is centered around the DC bias voltage on the same circuit. The AC voltage is what causes the speaker cone to move and produce sound. This voltage will vary depending on what type of audio is being listened to, talk or music, and type of music, as well as the volume setting of the system. Low volume and talk settings will measure around 1V AC and less, where constant music may measure 3 V AC and slightly higher.
Do you know how to do DC voltage testing ?
Without Amplifier without UK6
Ignition OFF, disconnect the harness connector at the appropriate speaker.
Radio ON, test for 5.0-7.5 V between the signal circuit terminal A and ground.
? If less than the specified range, test the signal circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace the radio.
? If greater than the specified range, test the signal circuit for a short to voltage. If the circuit tests normal, replace the radio.
Test for 5.0-7.5 V between the signal circuit terminal B and ground.
? If less than the specified range, test the signal circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace the radio.
? If greater than the specified range, test the signal circuit for a short to voltage. If the circuit tests normal, replace the radio.
If all circuits test normal, replace the speaker.

Dec 25, 2016 | Saturn Outlook Cars & Trucks

1 Answer

I have code b1025 on mercedes c240 2001 airbag ignition circuit 1 driver side resistance to high


  • B1025 Component B48 (Front Passenger Seat Occupied and Child Seat Recognition) is faulty

Oct 25, 2016 | 2001 Mercedes-Benz C-Class

1 Answer

My 2004 monte carlo stereo turns on but there is no sound? I have tried turning it off and the car off and i recieve cal err


Sorry dude but your going to have to take to the dealer !
DTC B1001 DTC B1025, B1035, B1045, or B1055 DTC B1259 DTC B1780
The radio does not function properly. The radio displays "CAL".
Install a scan tool. Turn ON the ignition, with the engine OFF. With the scan tool, perform the radio setup procedure. Refer to Radio Setup . Turn OFF the ignition. Turn ON the ignition, with the engine OFF.

Oct 20, 2016 | 2004 Chevrolet Monte Carlo

1 Answer

2005 malibu maxx tc light means gas pedal has no power when on


Winston, you will have to take it in and have scanned for fault codes to determine why Traction Control is doing this, may ba faulty sensor or wheel bearing.

Mar 23, 2016 | 2005 Chevrolet Malibu Maxx

1 Answer

What is code c1805 and code u1262 and code b2900


Search Results

    C1805 - Engine-Codes.com

    engine-codes.com/c1805.html
    Possible Causes and Repair Information for C1805 code. Learn what does C1805means? C1805 Mismatched PCM and/or ABS-TC Mod.

Aug 03, 2015 | Cars & Trucks

1 Answer

Stability system disabled light on no power


The stability system is software programmed into the ABS - antilock brake control module also the PCM - engine computer . service engine light DTC'S - diagnostic trouble codes stored . Your best bet , take it to a qualified repair shop or the dealer . You don't have the diagnostic equipment or knowledge to tackle this type of problem .

Jul 24, 2017 | 2003 GMC Yukon Denali

1 Answer

2005 Scion TC with 85,000 miles, brand new engine less than 1 year old, started having ''check engine light" on constantly just after installing new engine. Codes read "EVAP...


could have gotten a tank of bad gas, water in it, I find that to happen at some of the fuel stations here, I only go to one now and have no problems

Jul 10, 2011 | 2005 Scion tC

2 Answers

Made repairs to a 2005 scion tc. Need to reset the


get an obd 2 code reader and clear the code thats the only way to do it

Mar 09, 2010 | 2007 Scion tC Coupe

1 Answer

2000 Sunfire TC & Engine Light won't go off!


You have an engine code. When engine code sets it disable the traction control & tc light comes on. Go to auto zone they will check for codes for free. Your can buy your part & install your self if simple. If you need special tool they have loaners

Sep 08, 2009 | 2001 Pontiac Sunfire

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