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01-04-2013, 10:48 AM | #1 | |
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2000 GMC sierra 3500 no start
I have a 1 ton 2000 GMC sierra (old body style 99') 7.4 litre V-8 gasser with the allison 1000 tranny, 4x4. the engine will not crank over..
battery was dead so I charged it, batt was holding 9v, so i hooked up jumper cables to my new car, guage showed 12v, so I tried to start the truck.. the fuel pump, antilock brake system, and guages came on.. as well as the "check engine light", "service engine soon", and batt light... I ensured the trans was in park, even tried neutral.. no crank I hooked up the mini scanner tool I have, and got no codes.. cleared the ECU/ECM anyways.. no crank I also tried swapping out my starter relay with the A/C relay, and pulling fuses to the ECU/ECM for 20 seconds to clear any issues/codes.. no crank my next option is to clean the battery cables & terminals (or replace the cables), and replace the battery... the battery is only 2 years old.. due for replacement, but I'm kinda broke right now (christmas) the battery is one of those stupid side terminal ones with poor connections to begin with.. is there a top post terminal battery I can get to replace this POC? or will the posts hit the hood? recommendations? this is a plow truck, single battery setup (at the moment).. and the fisher 8' plow when running the hydraulic pump severly drains the battery.. lights dim severely, been wondering about a higher rated alternator (factory is rated at 120-140amps), larger power cables... etc.. dual batt system... |
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01-04-2013, 05:17 PM | #2 | |
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Re: 2000 GMC sierra 3500 no start
co I cleaned the terminals, applied some dielectric grease, and checked everything.. batteries guage went up to 12+v, and still nothing, checked under the hood while my fiance turned the key, the starter relay clicked over, but nothing from the starter solenoid.. I attempted to get under the truck, but had no room to get under without a jack, or lift.. was going to tap the solenoid and see if it would start..
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01-04-2013, 05:53 PM | #3 | |
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Re: 2000 GMC sierra 3500 no start
So what did your battery gauge show when your signi other turned the key? I would bet drops to 9 or less.
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01-04-2013, 06:56 PM | #4 | |
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Re: 2000 GMC sierra 3500 no start
You need to see if you have 12v to the starter wire at the solenoid when trying to crank the engine, if so the solenoid/starter is done.
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01-05-2013, 08:03 PM | #5 | |
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Re: 2000 GMC sierra 3500 no start
going to check for 12v at the solenoid excite wire tomorrow morning.. I'm thinking that's exactly what happened.. starter solenoid/start died.. how do I go about replacing the solenoid, I see i can purchase just the solenoid part of the starter (local parts store has it in stock), just never done it before..
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