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Chevrolet Repair/No power in overdrive

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Question
89 chevy c1500 305 5.0 L original motor and trans both been rebuilt..trans has 36,000 on rebuild..first and second gears ok, reverse ok..when it shifts from second ( automatic) into what is supposed to be drive or overdrive, which gear shifter is in, it has no power revs up high then drops back into second

Answer
HI TODD,THIS COULD BE FROMA COUPLE THINGS, FIRST IS THE SHIFT SOLENOID OR SHIFT VALVE IN THE VALVE BODY IS STICKING NOT ALLOWING IT TO GO INTO THE NEXT HIGHER GEAR, OR THE TRANSMISSION IS LOOSING INTERNAL PRESSURES,FROM LEAKY SEALS OR THE OVERDRIVE HIGH GEAR CLUTCHES ARE BAD, BECAUSE THEY WERE SLIPPING ALL ALONG AND YOU DID NOT KNOW THIS BECAUSE IT WAS SO SLIGHT. THIS COULD OF HAD A SEAL FAILURE WHEN IT WAS REBUILT..I WILL ASSUME YOU HAVE CHECKED THE FLUID ??? I THOUGHT SO..CK CHECKING. I THINK THE BEST THING IS TO TAKE IT BACK TO THE PLACE THAT REBUILT IT AND SEE WAHT THEY SAY AND GET BACK TO ME IF YOU WANT TO... GOOD LUCK TO YOU,,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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