Driving/head lamp disabling with dome lamp bypass switch

Here's a subject I know has come up before. Let's see if anyone has an answer this time:

I have a 2001 S-10 that I drive for work. If I push the dome lamp bypass (disable) switch 4 times in 5-6 seconds, I get an audible ding, and all forward pointing lights (driving and regular headlamps) will turn off. Another 4 pushes and they will turn back on. This works at any time.

My '99 S-10 Blazer does not have this feature, even though the interior is identical. The headlamp switch modules are identical. I know the light disable feature in not part of the switch module.

Question 1: Is there a way to add this feature to my '99 by reprogramming the BCM? I've spoken to several mechanics at one of the local dealerships and they all looked at me like I was speaking a foreign language or something.

Question 2: I noticed that there is a second wiring harness plugged into a dead-end slot on the headlamp switch module (no electrical connection). What is this for? Is there some option that my LS does not come standard with? Maybe fog lamps? I have yet to see a headlamp switch module with something in the same location as that harness...

Not Dead Yet

Reply to
NotDeadYet
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On Sat, 26 Jun 2004 13:17:55 GMT, NotDeadYet interior is identical. The headlamp switch modules are identical. I

Possibly, but I think you'd be a guinea pig for it.

FYI, the DRL/AHL disable trick was not a feature until 2000.

I saw that when I had my dash apart the other day. I figure it's for the fog lamps, which I don't have. That's where the fog switch is. I don't know if the wires go anywhere except a dead-end in the harness.

Reply to
Mike Levy

That plug is for the fog lamp switch. I bought a new switch for mine from the JY then found out that the headlight harness is different so I would have to go back and get the head/park/signal/fog light harness, then the BCM has to be reprogrammed to allow the foglamp switch to work. I'm heard that one person did it, so it seem that programming the 4 press disable should be possible as well if you can find a clueful dealer.

Reply to
Eugene

Reply to
Geoff Welsh

I don't think it's possible for them to do this - the programming system won't allow you to flash the "wrong" calibration into modules in this way..

Reply to
Robert Hancock

I doubt that the 1999 BCM hardware would accept software designed for the newer

2001.

The DRL/Auto HL disable function is a good feature though...give customers the choice between the two. The full size trucks (Silverado, etc) and SUVs (Tahoe, etc) have it too. The people I know that use the disable mode wish that it would stay set to the way they want it (it resets to enable during each ignition sequence..which is incredibly idoitic)

Reply to
James C. Reeves

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