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Chevrolet Repair/starting problems

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Question
QUESTION: my son and I put a new motor in his 04 chevy Silverado the old motor ran before we changed it but know the new motor will not start it will not turn over from the key getting fuel but not to the injectors

ANSWER: MORN JOHN, YOU SAY THIS WILL NOT TURNOVER. THAT MEANS TO ME THE STARTER WILL NOT CRANK. AS IN TURN THE ENGINE OVER. DO YOU MEAN IT WILL CRANK BUT NOT START, ?? I GUESS I AM GOING WITH THIS, SO IF THE ENGINE CRANKS AND THERE IS FUEL AT THE FUEL RAIL BUT THE INJECTORS ARE NOT OPENING THE FIRST THING I WOULD DO IS CK ALL THE FUSES IN THE ENG BAY AND UNDER DASH AREA..USE A TEST LIGHT TO CK FOR POWER ON BOTH SIDES OF THE FUSES WHEN THE KEY IS TURNED ON..ARE YOU SURE YOU HOOKED UP AND WIRING HARNESSES CORRECT ??? YOU ARE THROWING ME A CURVE BY SAYING IT WILL NOT TURN OVER FROM THE KEY BUT YOU SAY THERE IS FUEL PRESSURE..I AM CONFUSED..GET BACK TO ME ON THIS SO I CAN BETTER UNDERSTAND YOUR QUESTION..I WILL BE HERE FOR ANOTHER 2 HOURS...TOM...

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

QUESTION: Tom ,If you jump the starter it will turn over but will not start, but not from the key. It is getting fuel to fuel rail but not to the injectors. Put in a used fuse panel under hood. checked the wiring made sure they were in the right places.

Answer
HI JOHN, CK THE RELAY FOR THE START/INJ. SO WHEN YOU TURN THE KEY TO CRANK THERE IS NO POWER ON THE PURPLE WIRE GOING TO THE SOLENOID,ALSO NO PULSE TO THE INJS TO OPEN THEM...GET URSELF A 194 LIGHT BULB BEND THE TANGS STRAIGHT OUT AND PUT THE BULB IN ONE OF THE INJ HARNESSES THAT YOU ARE GOING TO UNPLUG..NOW HAVE SOMEBODY CRANK THE ENG OVER,,THE LIGHT BULB SHOULD FLASH FOR PULSE TO OPEN THE INJ'S.IF NO FLASH CK THE ABOVE [FUSES AND RELAY..IF ALL OK,MAY HAVE PCM ISSUES OR AGAIN SOMETHING NOT CONNECTED.... THIS WILL BE IN THE UNDER HOOD FUSE BOX PANEL.IF THIS WAS OK BEFORE AS YOU SAY SOMETHING DID NOT GET HOOKED BACK UP OR A FUSE OR RELAY BLEW..LET ME KNOW WHAT YOU FIND AND GOOD LUCK TO YOU,,,TOM..***************************************************************************************************************************************************************************************
PS JUST THOUGHT,, I WANTED TO ADD THIS,DID YOU BY ANY CHANCE SHORT A POWER LEAD OF SOME KIND TO GROUND ?? THIS COULD SEND A SPIKE TO THE PCM CAUSING IT TO FAIL...YOU COULD CK FOR VOLTAGES AT A FEW OF YOUR SENSORS TO SEE IF THERE IS A 5 VOLT REFERENCE WITH THE KEY ON FROM THE PCM..IF NO VOLTAGE EITHER THE PCM HAS FAILED OR AGAIN A HARNESS IS NOT PLUGGED IN OR SHORTED OUT.....LET ME KNOW HOW THIS GOES...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

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MANY CUSTOMERS IN OUR BUSY SHOP.

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