Question about 2003 Oldsmobile Alero
The horn will not work it's getting used to the relay in the fuse you can jump over the relay make it home it's not getting juice from the steering wheel but the cruise control works does anybody have a wiring diagram thank you
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Posted on Jan 02, 2017
you need to Check the Wire inside the Steering wheel, When Grounded by pressing horn button the relay will send the 12 volts to Horn,
You Also could and Please Re-check the Color of wire for the Horn SHOULD be a Black Wire in the wire loom Under the Dash on the Column and If you Ground down the Black wire from Under the dash, You would Find out If it is In fact the Steering wheel it self,
you could also add a Second Button on the Dashboard
black wire to Button and then to Ground body,
Posted on Feb 03, 2009
cut back the positive wire enough to check the voltage on good wire , not just at the plug. if you still have bad voltage check the ground to see if you are getting decent continuity! if all is still no good replace the wire from the fuse block to the horn. this is not as scary as it sounds and then you'll be back on the road good luck
Posted on Oct 02, 2008
use a scanner to check the abs system . most of the time the abs brakes and traction control system work together. your cruise control . unit has a servo motor .in front right fender well. check the fuse and relay also the cruise control brake release switch. and the brake light switch.if all is good you have a cruise control module problems. dealer ship job.
Posted on Apr 02, 2009
SOURCE: I have a 2004 Alero.
Either by replacing the actual horn switch assembly or the wire that runs down the steering column. Sounds like the switch is bad but somtimes the wires short to groung causing the horn to work. Depending on how hard you beating the steering wheel could tempory fix either problem.
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Posted on Dec 01, 2010
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