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Chevrolet Repair/brake control module

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Question
QUESTION: Hi. have been chasing the problem causing a brake light on my 1989 chevy astro van (v6). all brakes, wheel cyl. etc. are good and have been insp. by a mech. his recommendation was to change brake switch (I did, no joy) and the brake module. my question is this. I installed the mod. with no change in brake light status....but another chevy guy told me that some of these mods. need flashed or coded. I have searched my book and the net with no info on whether my van module requires coding--some do, some not--do you know? would really appreciate the help :)

ANSWER: HI LAURA,,OK YOUR YEAR VAN WOULD NOT NEED TO BE RE-FLASHED..THIS IS FOR NEWER CARS AND TRUCKS TO RELEARN THE COMPUTER TO WORK WITH EACH CAR OR TRUCK IT GOES INTO....I WILL ASSUME THIS IS THE RED BRAKE LIGHT ON THE DASH THAT SAYS BRAKE !!! WHY YOU WERE TOLD TO REPLACE THE BRAKE LIGHT SWITCH I DO NOT KNOW ?? THIS WILL ONLY CONTROL THE BRAKE LIGHTS IN THE REAR OF YOUR VAN..NOT YOUR DASH LIGHTS. UNLESS YOU ARE TALKING ABOUT THE BRAKE LIGHTS OUTSIDE THE VAN ??? HAVE YOU CHECKED TO MAKE SURE THE PARKING BRAKE SWITCH ON THE PEDAL IS OK AND NOT SHORTED OUT CAUSING THE LIGHT TO LIGHT ON THE DASH ?? THE OTHER POSSIBLE PROBLEM IS THERE IS NOT ENOUGH HYDRAULIC PRESSURE IN THE BRAKE SYSTEM TO TURN OFF THIS LIGHT FROM THE PROPORTIONING VALVE ?? LET ME KNOW WHAT LIGHT WE ARE TALKING ABOUT AND I AM SURE WE CAN GET TO THE BOTTOM OF THIS...GOOD LUCK TO YOU,,,TOM

---------- FOLLOW-UP ----------

QUESTION: Tom-sorry for being vague, really just meant to ask about the brake mod.--my problem has become a little convoluted--it started with the dash brake light being on-I changed the rear brakes and one bad wheel cyl--light did not go out. I am only a fairweather mech so I passed the problem on to real mech down the street who said rear brake lights were also out (hence the brake switch) and said that the brake mod was bad and he could t/s no further till it was replaced. so I brought van home and replaced switch and ordered mod. in the meantime, I started looking at my radio (which wasn't working either) and rechecking fuses. found hazard/turn signals and horn suddenly didn't work either. hmmm. started poking around under dash to find flasher and just looksee. got frustrated cuz I'm dumb and cant find flashers. picked up mod and installed and now horn/hazard/turnsig are all working and radio too--so--a short I assume. wires around e brake all look fine. will probably poke around some more under dash as I figure all that wire moving must have done something. As a final question--when r and r'ing hazard/turn signal fuse in panel, I keep getting sparks at that point on the fuse panel. heard this can sometimes happen and still be ok. what do you think?

Answer
HI LAURA,,AS FAR A SPARKS IN THE FUSE BOX [THIS SHOULD NOT BE] I WOULD THINK A BAD CONNECTION WHERE THE FUSE GOES INTO THE CONNECTION OR THE PROBLEM IS BEHIND THE FUSE BOX ITSELF.BARE WIRES...TRY TO LOCATE WHERE THIS IS ARCHING. THIS WILL ONLY WORSEN IN TIME AND MAY CAUSE BIG PROBLEMS.. IF IT IS WHERE THE FUSE GOES INTO THE OUTSIDE OF THE BOX IT IS A DIRTY CONNECTION..CLEAN IT REAL GOOD.. THIS COULD ALSO EXPLAIN WHY THE RADIO,HORN ETC WAS NOT WORKING..THE NEXT QUESTION IS WHAT DOES WHEN R AND R'ING MEAN..SORRY I AM NOT INTO TEXT LINGO..LET ME KNOW IF I CAN HELP YOU ANY FURTHER..GOOD LUCK,,,TOM..

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TOM SHEETS

Expertise

PLEASE READ ALL OF THIS BEFORE ASKING ANY QUESTIONS. IF THIS CHEVY SECTION IS MAXED OUT.YOU CAN REACH ME IN THE OLDS/BUICK SECTION. Will answer questions from 6:00am to 10:00pm all days [EST][[[ NO DIESEL OR PAINT QUESTIONS]]] will answer all 1965 to present QUESTIONS ON ALL GM'S on mechanics of these cars. Keep in mind i am not there in person i am going on what you are telling me !! PLEASE IF ASKING A QUESTION GIVE ME AS MUCH INFO AS POSSIBLE. THE MORE THE BETTER. SUCH AS YEAR,MAKE,MODEL,ENGINE SIZE. THIS WILL HELP ME HELP YOU. I will not be able to answer all questions because of some situations that i would really need to be there and see things for myself,such as electrical issues. In many cases i would need wiring diagrams. I can also give you an estimate on what the cost would be at our repair shop as an idea to help you. Keep in mind that my answer is ONLY MY ADVICE,ck with your mechanic as well.. >> THANK YOU, TOM..

Experience

I have been a ASE certified master mechanic for over 30 years and certified IN ALL 8 CATEGORIES,[engine repair,engine performance,auto trans,manual trans,clutches,steering and suspension,brakes,electrical systems,heating and air/cond. I am also a state CERTIFIED inspector for over 30 years. I do computer work [pcm]fault codes,pcm flashing,state inspection monitor readiness,repairs on exhaust,fuel service,[injection and carburetor,] charging system problems, running issues,alignments,frame problems,tire balance,struts and of course standard and anti-lock brakes.

Organizations
nys state auto repair industry and ase group.

Publications
N/A

Education/Credentials
high school,4 years of tech school,and many many hours of auto training with many gm classes and aftermarket training classes..

Awards and Honors
ASE MASTER TECH CERTIFIED IN ALL 8 CATEGORIES.NYS INSP LICENSE AND A/C CERTIFIED

Past/Present Clients
MANY CUSTOMERS IN OUR BUSY SHOP.

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