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Chevrolet Repair/clock stays on

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Question
I have a 1996 Chevy Tahoe. 60K miles with a 5.7 liter engine. Yesterday my battery was dead. I jumped it and took it to the auto parts store where a load test was done on the battery/charging system. The battery was bad and I installed a new one. The truck works fine but now the clock stays lit all the time and the radio has power to it constantly. you can play the radio with the key out of the ignition. This never happened before the battery was changed. I took the negative battery cable off overnight. The clock was off when reconnected. I went out to leave for work and the clock was on. drove to work and it was went off with the key. could this be a ground problem?

Answer
HI JOEL,,WELL THIS TO ME SOUNDS LIKE A FAULTY BCM [BODY CONTROL MODULE] THIS CONTROLS ALL OF THE ELECTRONIC FUNCTIONS IN THE CAB OF YOUR TRUCK..WHAT COULD OF HAPPENED IS WHEN YOU JUMPED IT THIS COULD OF CAUSED A SPIKE IN THE SYSTEM,TAKING OUT A SECTION OF THE BCM...THIS MAY NEED TO BE FLASHED AT YOUR DEALER OR YOUR LOCAL SHOP IF THEY CAN FLASH WITH GM SOFTWARE..FLASHING JUST RELEARNS THE COMPUTER TO THINK STRAIGHT...IF FLASHING WILL NOT CORRECT THIS A NEW BCM MAYBE NEEDED...ONE LAST THING I THOUGHT OFF. THIS MAY ALSO HAVE A BAD DOOR SWITCH IN THE LATCH..THIS IS WHAT TELLS THE BCM THAT THE DOOR IS OPENED OR CLOSED..THIS COULD BE SHORTED OUT..BUT WITH THAT BEING SAID SINCE YOU NEVER HAD THIS PROBLEM IN THE PAST I BET THE BCM IS AT FAULT..GOOD LUCK TO YOU AND IF YOU NEED MORE INFO LET ME KNOW..YOUR NY FRIEND...TOM...

Chevrolet Repair

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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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