Question about 1999 Chevrolet Blazer

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02 Blazer wont Start, Passlock?

I have a 2002 Chevrolet Blazer, recently my multifunction switch went bad making my brake lights not work. I opened up the steering column to look for any pinched of loose connectors but didnt see any. so I put the column back together so I could drive to the parts store for a multifunction switch. Unfortunately at this point the truck would no longer start, and the security light is constantly on. I have tried to wait 10 min, 30 min and even 2 days with the key on to reset the passlock without any luck. Have even unplugged the battery for a couple of days and removed all relays and fuzes I could find. Still the truck wont run. Just gets an initial fire when started, but then dies. I know my fuel pump is good and ignition is good. just need a way to bypass or fix it without alot of money. Any help is appreciated

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  • FERMIN62 Nov 29, 2008

    my blazer have the seme problem i tink is the trottlebody inj ba i donknow i remove the trottle body i ll by one tomorow ani help is welcome tanks

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You might have tripped the security on it lock and unlock using the key in the driverside door

Posted on Nov 03, 2008

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I had the same problem when I replaced my multiswitch. I set off the "passlock 2" system that my blazer was equipped with because I didn't disconnect the battery before I took out the bad switch and put in a new one. That ended up blowing a fuse labeled "TBC." Its located in the fuse box in the engine compartment. Its a 10 amp. I know you said you checked all the fuses, but I would double check that one.

Posted on Jun 24, 2009

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1 Answer

Brake lights work part of time on a 2001 Chevy blazer


Check the GM recall list on this vehicle. There are problems with the multifunction switch, and the hazard light switch. The recall actually shows you what to do to narrow down the problem. Brake lights run through both of these switches. I just went through all of this, ended up being a burnt female connector that goes into the brake light switch. Up on the brake pedal.

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