Pioneer GM-5300T Car Audio Amplifier Logo

Question about Pioneer GM-5300T Car Audio Amplifier

2 Answers

Amp just abruptly stopped working (Pioneer GM-5300T)

I just installed a Pioneer GM-5300T amp in my girlfriend's car (1999 Pontiac Sunfire). When I completed the installation everything worked properly (i.e., sound was coming from the subwoofers). However, as my girlfriend was driving back home, the sound abruptly stopped emitting from the subs (she had been driving approximately 30 minutes when it happened). I checked all of the fuses (they were fine), all of the connections were tight (including the ground), the speakers did not appear to be blown, the power wire was not crimped or severed. I noticed that the power indicator was lit, so power appeared to be feeding to the amp. Honestly, I'm stumped...I don't know what is wrong. I mounted the amp on top of the speaker box. I grounded the amp to a metal plate extending down from the top of trunk ceiling (not the trunk lid!) - I made sure to scrape the paint away from the metal for a good ground. The only concern I had was the in routing the power wire, I had to run it fairly close to where the exhaust pipe connects to the exhaust manifold (it was about 3 inches away from the pipe), however, I covered the power wire with a wire loom to protect it from heat. Like I said, everything worked just fine when I hooked it up, and it worked for about 30 minutes as she was driving home, then the sound just stopped coming from the subs. Any help, guidance, and/or solutions would be GREATLY appreciated. Please email me with any suggestions.

Posted by Chris Cousins on

  • Anonymous Mar 10, 2009

    My amp was working just fine for about a week and then nothing power light is on nothing wrong with wiring and the sub is a pioneer sub so ohms are not to low. So now what do I do, I did smell something after it happened but amp did not seem to be that hot checked all wireing at that point all of them were in tact. I do have a fuse on the power line, haven't checked the internal fuses, but wouldnt the power light be off if one of these fuses were blown. Hole system is pioneer head unit is dehp-4000ub and door and sub speakers are also pioneer dont remember sub or door speaker model numbers but I do know what sub wattage is 800 and it is a 12. Cant really look at sub thogh since box is completley sealed. so know what do I do



2 Answers


  • Level 1:

    An expert who has achieved level 1.


    An expert that has over 10 points.

    Problem Solver:

    An expert who has answered 5 questions.

  • Contributor
  • 10 Answers

Apart from the external DC power fuse (I hope you have one in-line), the majority of in-car amps have 2 mini fuses inside the unit to protect the output MOSFETs from overloading due to incorrect speaker connections, ie, if the output impedence is rated at 4ohms, anything less than that is considered to be a short circuit, and will overload the MOSFETs. After performing the tests suggested by KaeZoo, open the unit and look for printed markings on the circuit board, something like F1, F2, the fuses may not look like conventional fuses.

Posted on Jun 12, 2007


Brian Neathery

  • Level 2:

    An expert who has achieved level 2 by getting 100 points


    An expert that got 10 achievements.


    An expert that got 5 achievements.

    Vice President:

    An expert whose answer got voted for 100 times.

  • Expert
  • 156 Answers

You'll need a digital multimeter to do any real troubleshooting. There are two tests you should try that might help you find the problem. First, while the system is playing, test for DC volts at the ground and positive power terminals on the amp. Place the black probe on the amp's ground terminal and the red probe on the B+ terminal. You should get a reading of around 12 volts or more. If you get a much lower reading, then try replacing the main power fuse at the battery. Some fuses, especially AGU (glass tube) type, can fail even if they don't look blown. The next test is to disconnect the speaker wires from the amp and test the resistance through the speakers. If a subwoofer has a damaged voice coil, it won't be apparent from inspecting the sub. You might find an open coil (no continuity through the subwoofer) or a shorted coil (close to 0 resistance through the subwoofer). In either case the sound will stop. If you find one of these, check inside the sub box to make sure it's not just a loose wire.

Posted on Jun 11, 2007


Add Your Answer


Uploading: 0%


Complete. Click "Add" to insert your video. Add



Related Questions:



you have the remto wire hook up it blue from deck to amp?

My pioneer gm 5300t amp cuts off at loud volume and will not kick back on until it is turned down and cools off, what is wrong with it?

You are over heating it,You have your speakers wired up for a lower,(OHM) Rate then the amp can handle, That why it cut out when you have it turn up

Are subfoofer ts-w308d2 and amplifier GM-5300T compatible with each other?

Yes. You will be able to run this setup with the sub bridged across both channels of the amp, which will give you more power (which the sub will be able to handle: 380 watts rms), or with the sub wired to a single channel, which will give you less power (125 watts rms). The sub can handle 400 watts rms.

I parelled one 15" q power subwoofer to my brideged pioneer amp.The amp got really hot and blew a fuse.How should I wire my dvc subwoofer to the briged amp.

Hello sir, hi, YOU DON'T bridge no more speakers, this upsets the impedance load of the amp. to install another sub-woofer, get another amplifier. You may have damaged your power amplifier, If you experience repeated fuse blows, your power amplifier is now SHORTED. This needs IC amplifier replacement.

I have a pioneer 760watt model gm5100t amp and two audiobahn 12" subs and I would like to know how the wiring is configured from the amp to the subs as well as how the subs are wired since they are dual...

you bridge the inside + - and use the outside + -

then connect the outside + to the amp then connect the - to the + on the other sub then the - on the other sub to the amp just read this and do it slowly and you will get it then you only have to run the subs on a two channel amp

rate pls

My amp normaly has a continuious blue light when functioninng properley now it is at a fast blink and my subs wont work what is the problem i have checked the hot and ground and the remote wire .if i...

yes you have a internal fault of the amp. the circuit that puts it into safe mode is bad and that is a very small chip on the board know as a op amp. needs to be repaired.

I have a Pioneer GM-5300T amp wired to a 10 inch kicker sub. The music plays throughout the speakers of my car but the sub goes in and out. I noticed that the amp's power light dims when the sub goes in...

Hello pburgfootbal,

You do not specify which Kicker sub you have or how it is wired to the amp. The GM-5300T is only stable to 4ohms in bridged mode and if your sub is a 4ohm DVC with the coils in parallel, it presents a 2ohm load. If the sub is 2ohm DVC with the coils in parallel, the load is only 1ohm. Either configuration would be too low of an impedance for the amp in bridged mode. I'd check the sub specifications and make sure that the wiring configuration properly matches it to the amp.

Hope this helps.

What does the system control wire get hooked up tooo??????

it's just a remote wire it goes from your amp to the car stereo. usually on the wire harness for your cd player the color is BLUE but it should be labeled.

1999 Pontiac Sunfire Ignition problems

Hello Brittneyc_07,

"Someone" is LARGELY correct...

If you change out the entire security lock...
Keys, cuts, codes & all (then your doors won't
match either...
so you really ought CHANGE EVERYTHING...

But WHY? (if only your switch is defective??).

But if you have a locksmith merely change the SWITCH...
(use your old keys... & code the new Ignition switch correctly)

"SOMEONE" is full of more "stuff" than a Christmas turkey.

Locksmith can come to you...

Charge less than dealers...

Perform only necessary work...

but the fact is... You could VERY LIKELY do
all the work yourself:

Check out the prices below...
Call your local locksmith & GET AN ESTIMATE...

GM has a process for OWNERS to "reprogram"
their own keys... It just takes a really long time...

My guess is the lock cylinder can be re-keyed
to the original keys... and will work fine...

Check with your local LOCKSMITH after compaying the prices below...

1999 PONTIAC SUNFIRE 2 4L L4 Ignition Lock Cylinder RockAuto

Hope this helps...

Carnac the Magnificent
Not finding what you are looking for?


Ask a Question

Usually answered in minutes!

Top Pioneer Car Audio & Video Experts

 Francisco Mauricio...
Francisco Mauricio...

Level 3 Expert

1551 Answers

The Knight
The Knight

Level 3 Expert

76843 Answers


Level 3 Expert

85240 Answers

Are you a Pioneer Car Audio and Video Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides