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Chevrolet Repair/99 chevy malibu, key won't turn in ignition

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Question
QUESTION: replaced ignition cylinder and housing, new tumblers to match original key, new key from dealer.  it worked good at home key turning, I put it in ignition with the battery off still key was turning, I put the cover back plug the battery and put the GEAR SHIFT back to park. after that the key won't turn in the ignition.

I took the shifter assembly off and manually forced to shift gears to make sure the car is in park.

ANSWER: HI THOMAS, ,THE LOCK CYLINDER IS DEFECTIVE.PULL THE LOCK CYLINDER OUT AGIAN AND SEE IF THE KEY TURNS. I THINK A TUMBLER FELL. THIS IS THE LOCK CYLINDER THAT FITS IN THE DASH CORRECT, NOT THE COLUMN..IF THIS IS THE LOCK CYLINDER THAT FITS IN THE COLUMN LET ME KNOW..I CAN NOT REMEMBER WHAT YEAR THEY SWITCHED OVER..

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

QUESTION: the key must be turn to on position to release the cylinder

do you think the cable link (interlock next to the shifter could lock the cylinder?)

if no, is there a way to pick this lock, or only drilling it

Answer
HI THOMAS,SO THIS IS THE IGN LOCK THAT GOES IN THE DASH. HAVE YOU TRIED TO PUSH THE SHIFT LEVER ALL THE UP TO PARK WHILE TURNING THE KEY ??? IF NOT TRY THIS FIRST..WHEN THIS HAPPENS AT OUR SHOP WE PUT A VISE GRIPS ON THE KEY AND FORCE THE LOCK CYLINDER TO RUN POSITION TO GET THE LOCK OUT. IF YOU NEED TO DO THIS TIME FOR ANOTHER LOCK CYLINDER OF COURSE. YES YOU ARE CORRECT THE SHIFT CABLE OR INTERLOCK SOLENOID COULD BE CAUSING THIS TO HAPPEN. WHEN YOU PUT THE CABLE BACK INTO THE BACK SIDE OF THE SWITCH DID IT GO IN OK ??? HAVE YOU CHECKED ALL OF YOUR FUSES THE MAKE SURE THAT THE INTERLOCK CIRCUIT IS OK ??? AS FAR AS PICKING THIS LOCK GOES I DO NOT KNOW OF ANY WAY TO DO SO,AND IF YOU DID I DONT THINK THIS WOULD HELP YOU.THIS SOUNDS TO ME LIKE THE SHIFTER ASSEMBLY IS BAD CAUSING THIS TO LOCK UP LIKE THIS..SO TO SUM THIS UP,IF FUSES ARE OK, FORCE THE LOCK CYLINDER TO RUN OR DRILL IT OUT, REMOVE THE CABLE AND SEE IF THIS CABLE IS FREE, IF NOT TIME FOR SHIFTER ASSEML Y.SOMETIMES THINGS SPILL ON THIS SHIFTER CAUSING THESE PROBLEMS..LET ME KNOW HOW YOU MAKE OUT AND GOOD LUCK TO YOU,,,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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