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I'd guess you need to replace the headlight switch. The switch for a 94 isn't too expensive but it IS a dealer only item. The center of the instrument panel comes off with the 4 screws in the corners. Pull the instrument panel, disconnect the plug to the switch then remove the switch from the panel. Recognize that the switch assembly has 3 parts, Headlight switch to turn the headlights ON, clearance light switch that turns on the clearance lights and dash lights and dash light dimmer assembly. It all comes as a package and I think GM had a problem with a few off their trucks for the years that used that switch assembly, so the switch is quite cheap.

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โˆ™ 2005-11-25 19:54:38
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Q: Why do the headlights work but taillights and dashlights come on only after the truck warms up cold weather takes about 10 minutes Its a 94 suburban w 350 ci?
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