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Chevrolet Repair/reduced power

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Question
my 2003 tahoe had the reduced power light come on and the unit would not go over 20 MPH. This happened just after I slowed to go around a corner and then speed up. The owners manual says overheating problem but the gauge only shows 200 to 210 ,so way below hot . What else could it be? I have read that it could be throttle body, is that right.

Answer
HI GEORGE,MY BEST ADVISE TO YOU WOULD BE TO GET THIS TO A SHOP THAT HAS CHEVY SOFTWARE AND HAVE IT SCANNED FOR ANY CODES BUT MOST IMPORTANT IS LIVE DATA..THIS WILL TELL YOUR TECHS WHAT IS GOING ON..THE THROTTLE BODY COULD BE A ISSUE, BUT THIS YEAR WOULD BE RARE..BUT POSSIBLE. THE MASS AIR FLOW COULD BE A PROBLEM AS WELL. YOU COULD TRY TO UNPLUG THE MASS AIR FLOW AND SEE IF THIS IMPROVES YOUR PROBLEM,IF SO, THE MASS AIR FLOW IS BAD..SO TRY THE MASS AIR FLOW TRICK AND BEFORE YOU TAKE YOUR TRUCK TO A SHOP [JUST THOUGHT OF THIS] CK THE WIRING HARNESS GOING TO THE THROTTLE BODY AS WELL FOR ANY BROKEN WIRES, THERE HAVE BEEN MANY, MANY, PROBLEMS ON HARNESS ISSUES,PEEL BACK THE BLACK COVER AROUND THE WIRES AND LOOK AT THEM REAL CAREFUL LIKE..ANT BROKEN WIRES HERE WILL CAUSE THIS AS WELL..LET ME KNOW HOW THIS GOES, 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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