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2005-H2-30k,…electrical issues, just started driving the old…

Customer Question
2005-H2-30k,…electrical issues, just started...

2005-H2-30k,…electrical issues, just started driving the old girl on a regular basis, after years in the garage, (30k) and little quirks…when lights are on, “TURN-SIGNAL-ON”, message, when lights are on “RT-TURN-SIGNAL-DOESN’T-WORK”, sometimes, when lights are on “LOW-TIRE-PRESSURE-LIGHT”, comes on, sometimes, “ALL THE AFOREMENTIONED FAVOR THE RIGHT SIDE”, cruise control works sometimes, no pattern I've found, left rear seat heat not working, something is DRAWING HARD ON THE BATTERIES, if I don’t plug it in to trickle, two days batteries down…

Mechanic's Assistant: While using the cruise control can you accelerate or decelerate? Have you checked the fuses?

When it does work yes, it wouldn't work at all if the fuse was blown

Mechanic's Assistant: What is the model of your '05 GMC?

2005-H2

Mechanic's Assistant: Are you fixing your vehicle yourself? What have you tried so far?

I can, havedone nothing yet,

Submitted: 9 months ago.Category: GMC
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Customer reply replied 9 months ago
TO ADD TO THIS, THIS JUST STARTED, if I turn headlights off the RT turn signal works but some interior lights blink in unison with the TURN SIGNAL...
Customer reply replied 9 months ago
you've taken my MONEY where are my ANSWERS...?
Answered in 1 day by:
9/16/2017
GMC Mechanic: JFN1, ASE Certified Technician replied 9 months ago
JFN1
JFN1, ASE Certified Technician
Category: GMC
Satisfied Customers: 5,663
Experience: GM Master Technician
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I'm sorry for the delayed response, I can help you with these issues. Do you still need help?

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Customer reply replied 9 months ago
please it’s all so odd and peculiar
GMC Mechanic: JFN1, ASE Certified Technician replied 9 months ago

OK, there is a lot going on here, and these symptoms are probably not all related to each other.

Do you have a multimeter and know how to use it?

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GMC Mechanic: JFN1, ASE Certified Technician replied 9 months ago

Alright. I would start with finding the parasitic load that's running the battery down. Remove either of the battery cables, install your multimeter inline between the cable and battery, and set it up to measure amperage. Keep the key off and doors closed, let the vehicle rest for 10 minutes or so, and see what the amperage reading is.

I'd start here because you may have a faulty BCM that is causing a number of other issues, as well as causing the battery drain, so it's a good place to start and perhaps kill many birds with one stone.

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GMC Mechanic: JFN1, ASE Certified Technician replied 8 months ago

Did you get this worked out?

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