Question about Buick Cars & Trucks
By 2005 most vehicles are fully computerised and it isn't wise to take any electrical steps unless you are working from a wiring diagram and know what you are doing as getting things wrong can have expensive and inconvenient consequences.
Current to systems tends to be switched by a black box after receiving a signal from the lights, wiper or other switches. Because the systems are digital and dependent on duty cycle an oscilloscope is as useful a diagnostic tool as a voltmeter.
Posted on Jan 13, 2019
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Posted on Jan 02, 2017
SOURCE: AC problem
is the compressor turning on? when you turn thwe a/c? on,
and also locate the low side line on engine compartment and feel if is cold, if it is, then your blend door system is not working,
the blend door does control the cold and hot air coming to engine.
Posted on Jul 02, 2008
Before you go to the relay--see if you can scrub the fuse holders clean (for the horn and wipers). Remove the ceramic fuses, and take a stiff bristled brush and some rubbing alcohol to the contact surfaces. Vehicles I used to restore (from the South) that had been sitting a while had green oxidation on the fuse contacts that would cause intermittent opens on the circuit.
Posted on Mar 27, 2009
could be a fuse , could be a motor ,or could be the central timer unit , your question was could it be a fuse? possibly!
Posted on May 20, 2009
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Where is wiper fuse located?
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