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Chevrolet Repair/talegate window problem

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Question
I have a 1990 Chevy Blazer 5.7 ltr V-8. I was raising the rear tailgate window and when I looked in my rear view mirror, I noticed that the window was crooked. About halfway up, the window jammed and and the window motor stopped. I got out of the vehicle and inspected the window and tried  manually to move the window. The high side seems stuck and won't move much but the low side I can pull it up (seems very loose) but it will not even out with the high side and will not stay in place ( keeps falling back down ). What do you think happened and what do I have to do to fix the problem? Any advice would be greatly appreciated.  Thanks

Answer
HI CRAIG,,YOU WILL NEED TO REMOVE THE TAIL GATE INNER DOOR PANEL..ONE OF TWO THINGS WENT WRONG, THE WINDOW GUIDE RAIL OR MOUNT ON THE SIDES HAS BROKEN CAUSING WINDOW TO COCK,OR THE WINDOW REGULATOR CABLE IS BROKEN OR VERY LOOSE GETTING READY TO FAIL....THIS IS WHAT MOVES THE WINDOW UP AND DOWN IN ITS TRACK. IF ONE SIDE OF THE CABLE GETS LOOSE THIS WILL COCK THE WINDOW..ONE LAST THING THAT MAY CAUSE THIS IF THE WINDOW MOUNTING BOLT ON THE BOTTOM OF THE WINDOW HAS BROKEN OR LOOSENED UP THIS MAY ALSO COCK THE WINDOW IN ITS TRACK...ONCE THE DOOR PANEL IS REMOVED TAKE A LOOK AT HOW THINGS ARE MOUNTED AND YOU SHOULD SEE WHAT IS GOING ON. IF YOU SEE ANY LOOSE CABLES THIS MEANS THE REGULATOR WILL NEED TO BE REPLACED...HOPE THIS HELPS YOU 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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