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Pete, Technician
Category: Jeep
Satisfied Customers: 29096
Experience:  Over 17 years diagnosing and repairing automobiles various makes and models with some training and certifications.
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1999 jeep grand cherokee laredo all lights flicker when you

Customer Question

1999 jeep grand cherokee laredo all lights flicker when you turn on headlights you loose tach temp fuel and oil gauges sometimes a/c stops working snap on 2500 won't communicate to see live data but will retrieve codes I think it's a ground issue but not
Submitted: 2 years ago.
Category: Jeep
Expert:  Pete replied 2 years ago.
My name is ***** ***** I am a professional here at Just Answer. I noticed that your question was not getting a response and thought I would see if you still need help with this.I apologize for the delay and I hope I can still assist you with this here.
From what you have described here this does sound like either a loss of power to the electronics or loss of ground causing this fault.I have seen both cause this issue here.I would start with checking the battery cables to make sure they are clean and tight at the battery and to where they run to and make sure the connections at the fuse panels is all found to be o.k.Check any grounds connected to the frame and body for being loose,damaged or corroded.
Thanks Pete
Customer: replied 2 years ago.
I thank for taking the time to respond to my question but if I knew where the grounds ran to I would have already done this. I am getting code bus p1687 from my understanding these jeeps are notorious for these electrical issues that the dealer won't even try to fix. I haven't had much success on this site nobody responds or they don't read the question thoroughly this statement isn't meant for you. You obviously read my question in full.
Expert:  Pete replied 2 years ago.
Copy and paste the links below to a new web page or web tab to view the ground locations that need checked on your model.They are the ones labeled with a G in the diagrams.
Thanks Pete
Customer: replied 2 years ago.
Ty I will check these later today isn't there also some ground conn at under dash drivers side on fire wall inside the car
Expert:  Pete replied 2 years ago.
Your welcome.There are some interior grounds as well but I would check these to see if you locate any issues first.
Thanks Pete