Electrical problem

[Earzz]

I've got a 2005 GMC Sierra Crew Cab.its got the 5.3 engine in it. I've been experiencing some pretty crazy problems with it. It happens pretty often. The lock light will come on and my gauges will all drop to nothing and my ABS light will come on and parking brake light comes on and it will sometimes say service 4WD. And when this happens the A/C quits blowing cold air it just blows what feels like outside air. And the windows don't go up and down smoothly they kinda jump like they are not getting continuous power! Has anyone ever had anything like this happen or can anyone help me fix it?

[02suburbanZ71]

Has anything aftermarket been done? Its probably a ground or short. Take to dealer for scan

[txab]

Has anything aftermarket been done? Its probably a ground or short. Take to dealer for scan

+1

 

Also you can check your battery and alternator condition. Check cables and body grounds

[Earzz]

The only thing that is after market are the headlights and radio but they were installed after the problems started. I took it and got it scanned and they said there was several codes that involved voltage and replaced the battery but it's still happening.

[02suburbanZ71]

Involved voltage... The dealer said this? That could be many things even the ALT

[8.1HD/ALLISON]

Check and clean grounds if you havent yet . they can cause numerous issues.

 

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[02suburbanZ71]

Check and clean grounds if you havent yet . they can cause numerous issues.

 

Sent from my LGL86C using Tapatalk

+1

[efritz]

There are two under the driver door on the frame that get corroded and cause awful issues, clean them.