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1990 GMC Suburban 1500 Question: brake pressure switch



, Greeley, CO, April 09, 2010, 12:29

The brake service light stays on all of the time. Is this an indication of a bad pressure switch? I notice that there is a "port" on either side of the pressure switch, what are these for?

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  • Answer #1

    April 09, 2010, 13:24

    First, check your brake fluid level, if it is low that will set the light. If the fluid level is ok, then it can be several things. Have a good shop Diagnose this issue to be safe.

    here are some shops http://repairpal.com/directory?address=80631&car_brand_names=GMC

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    , June 10, 2010, 15:04

    if you dont know , dont mess with it. too many people kill others thinking they know how to fix critical systems.. besides you'll live longer if you do take it to a real break shop or the dealer..

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