Interminent Electrical issues

Asked by Feb 10, 2014 at 01:28 PM about the 2000 GMC Yukon Denali 4WD

Question type: Maintenance & Repair

At times the radio and dash lights will quickly cut out and come back on. Other times the entire vehicle will shut down and then restart while driving. A few times the entire vehicle will shut down and have to be restarted while driving...then the daytime running lights won't come back on and have to be manually turned on using dash switch. HELP!

2 Answers

35

Most likely it's a bad ground check them all start at the ground/negative battery cable make sure all the bolts are tight, free of corrosion and not frayed I had the same problems it was just a bad battery cable replaced it and cleaned all contacts

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Best Answer

Thanks Haze541BlackSS! This seems to have done the trick thus far. I also discovered a squeaking alternator while cleaning and tightening all the ground wires. Not sure if I need to replace it at this point, as everything else seems to be working fine.

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