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Ask GM Tech (Cam) Your Own Question
GM Tech (Cam)
GM Tech (Cam), Chevy Technician
Category: Chevy
Satisfied Customers: 15181
Experience:  GM Grand Master Technician 2007. 14 years experience.
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12 colorado parasitic draw 1.7 amps. Remove radio fuse .6

Customer Question

12 colorado parasitic draw 1.7 amps. Remove radio fuse .6 amps. Battery goes dead overnight. With radio out, fuse out same .6 amp.
JA: Did you test the battery with a voltmeter? And have you ever changed one before?
Customer: Yes charged up it goes to 13.5 v. Then stays at 12.7 v. Stays good as long as radio fuse out for 2day. Never tried longer time period. Voltage dropped to 12.2 when problem initially noted (no start)
JA: Are you fixing your Colorado yourself? What have you tried so far?
Customer: Yes. Pulled radio out. Problem same. Partially re-installed radio hooking up larger connecter only that feeds speakers. Smaller connecter not hooked up. Drain back to 1.7 v.
JA: Anything else you want the mechanic to know before I connect you?
Customer: Yes, are the speakers still drawing current when radio completely unplugged and no fuse. Want to elimnate them as problem without pulling door panels etc. Thanks
Submitted: 3 months ago.
Category: Chevy
Expert:  Mike S. replied 3 months ago.

Which engine came in this?

How exactly are you testing for a drain/draw?