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Gm Tech (Cam)
Gm Tech (Cam), GMC Mechanic
Category: GMC
Satisfied Customers: 1668
Experience:  GM Grand Master Technician 2007. 14 year experience.
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Have a 2003 Envoy 6cyl 4wd. Trying to trace a parasitic

Customer Question

Have a 2003 Envoy 6cyl 4wd. Trying to trace a parasitic draw. Under hood fuse box all voltage drops are zero except #14 labeled COILS. It is readin 10-12 millivolts. Ignition off. Is that normal. Also where can I find a power distribution diagram. I haven't gotten to the fuse box under the rear seat yet. Any advice will be welcome. Battery drains when parked more than 4 hours.
Submitted: 6 months ago.
Category: GMC
Expert:  david craig replied 6 months ago.

Hi Im david, thanks for visiting the sight. please allow me some time to pull up that information for you. thanks

Customer: replied 6 months ago.
Thanks
Expert:  david craig replied 6 months ago.

havent forgot about you. sorry, got busy here at my shop

Customer: replied 6 months ago.
Ok
Expert:  david craig replied 6 months ago.

here is the fuse panels

Expert:  david craig replied 6 months ago.

ill get you a power distribution diagram also

Expert:  david craig replied 6 months ago.

hows it going?

Customer: replied 6 months ago.
Working on it. I don't think that relay should be hot if the switch and the ignition are off. I'm gonna get a replacement and see
Expert:  david craig replied 6 months ago.

sounds good

Expert:  david craig replied 5 months ago.

just checking in to see how its going......

Customer: replied 5 months ago.
Have not had time yet to get to the rear fuse panel yet. Thanks for checking in
Expert:  david craig replied 5 months ago.

ok...