Q: i put in anew battery and alternator and it will not hold a charge. on 2005 Chevrolet Colorado

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i checked all fuses and i guess i will have the alternator checked, but is brand new. i can figure this one out.
(2) Answers
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Have the alt checked while on the truck, output voltage at the battery post should be 13.5 to 14 @ idle with lights & heater on!
thanks there old pushrod, wil check this out. Thanks| let you know how this works out. jedredrock12
With the vehicle turned off, Touch the voltmeter to black on battery and the red to the connection at the alternator. If the read is 0 then you have a break between the alternator and battery. Follow the red wire from alternator to the fuse box. Is it possible the fusible link has burnt out at the fuse box.