Engine start problems

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Engine cranks but no start SolvedSolved

Chevrolet Silverado 1500 2000 LS 338672 miles
I've got several fuses that aren't getting power like ignition fuses. And none of my gauges work and my fuel pump won't work.
Stump from United States 2 years ago  
ST
Rank 3
4 reports 
Solved
Best answer (according to Stump)
Stump from United States a year ago
I had to replace the flywheel/flexplate and when my friend bolted everything back together the ground wires from body to frame and engine to frame didn't get bolted back up or were removed and lost. So I took a set of jumper cables and hooked them to the appropriate spots to simulate ground wires and it started. Now I just have to install true ground wires and problem solved.
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P1400 cold engine start

Chevrolet Silverado 1500 2015 5.3 V8 4 wheel drive  111002 miles
Does anyone know how to fix?
Tammy from United States 3 years ago  
TA
2 reports 

Will not start after changing fuel pump, fuel filter, cap and rotor

Chevrolet Silverado 1500 1998 Chevrolet  130000 miles
1998 5.7 Chevy 1500 C truck. It will run for two seconds without pouring fuel in throttle body, then stops. Changed fuel pump relay. Fuel tank, fuel pump, fuel filter, cap and rotor. I will change wires and plugs next. It does run when I pour fuel into the throttle body. Im getting these codes po452 p1626 po463 po108 not sure what they mean. Should I clear these codes?
I have good fuel pressure 60 psi at the test port. This is not a daily driver. Truck has been sitting several years!
Trucker Bob from United States 2 years ago  
TR
1 report 
Dustman Diagnostics from United States 2 years ago
Out of the 4 codes, the P1626 is the one to be concerned with. That is the VATS system disabling the fuel system because it doesn't recognize the key at start up. Have you tried performing the key relearn procedure? Any OBD2 scanner should let you look at live data in the Body Control Module to determine if the BCM is acknowledging a valid key. The actually source of the problem varies wildly though. Could be a bad ignition switch module, a low battery, faulty BCM, etc.. . When I find BCM issues like that, I always look under the dash below the column for signs someone added an aftermarket alarm or other hackery, that is usually where the issue stemmed from.
Trucker Bob from United States a year ago
Thanks for getting back to me. I discount the battery and then touched positive and negative wires together several times. I turned on lights and ignition. Then waited 15 min. Then connected battery back. Battery fully charged with a trickle charge on it. I turned on the ignition for 10 min. Then off for 10 seconds. I did this 4 times. Its still not starting. I did notice the alternator charge gauge and light not coming on like it did before. Still not starting. Doing the same running a few seconds then stopping. Is there a way to check the BCM and the PCM before changing them?
Dustman Diagnostics from United States a year ago
@Trucker BobThere are procedures for 100% verifying the BCM is at fault but it involves tearing down the steering column and verifying the red w/white stripe wire at the ignition module has battery voltage with the key in the crank position. Are there any other "odd" behaviors going on? Such as brake and reverse lights staying on, horn stays on, wipers, etc.. . Without being there in person to condemn the BCM, it is almost a safe bet the BCM is at fault. If you are interested in purchasing a rebuilt module that you won't have to program, remove your current BCM from under the steering column, record the exact part #, year, make, and model of your vehicle and look these guys up: https://highway71autoparts.com/
So far their BCM's have been perfect, only need to perform the key relearn procedure and go.
Trucker Bob from United States a year ago
@Dustman DiagnosticsOk Thanks! Where is the BCM located?
Trucker Bob from United States a year ago
@Dustman DiagnosticsThe dash gauges stopped working. The alternator charge gauge and the oil pressure gauge. Also the security light is not working.
WALLE from other a year ago
Mi camioneta tiembla demasiado a una baja velocidad y en carretera suele perder potencia y comensar a vibrar muy fuerte si no acelero ¿que sera?
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My battery is draining.

Chevrolet Silverado 1500 2009 1500 V8 5.3L 265746 miles
Well it all started one day when i went to the store for lunch turned off my truck went in then came back out, went to start my truck the dash came on as normal, then when i went to start it i turned the key and lost all power everything was gone i coulndt even us my remote to lock/unlock. I tried boosting it and nothing you could just hear the starter click. Eventually i got it towed home took out the battery charged it put it back in and it worked. Then it sat over night about 12hrs and the same thing lost all power. I have checked my alternator its good checked the fuses the seem good. But… Read complete
Fath from Canada 9 years ago  
FA
16 reports 
Pete from United States 4 years ago
My dome light kept sticking on and that was draining my battery every night.
Gonza R from Argentina 4 years ago
Check out door switches. If one of them is failing the light keeps on.
Billyk from United States 2 years ago
Had the same issue. Thought it was a security lockout. Something draining battery. Thought starter. Relays checked out. Came back to life after doing a lockout reset but only lasted a few hrs. Ended up to be a Bad battery, charged but wasn’t putting out enough amps. These Chevys use a lot of power from the battery. Doesn’t take long for them to wear down. Putting a second battery in to support demand. Should just come standard. There is a space for it just now researching what’s needed to complete. Good luck hope this may help.
Tr-4 from United States a year ago
All of a sudden I’m getting parasitic battery drain. Garage said I had a bad battery, but alternator is good. Replaced it. Gauge said14 v at the garage, 12 hrs later gauge dropped to ~12 v and hasn’t come up to normal range yet.
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Compression test SolvedSolved

Chevrolet Silverado 1500 2008 Crew cab 4.8 202356 miles
What # of the fuse to remove for a dry compression test and do you disconnect coil pack wire?
Alday3 from United States 2 years ago  
AL
1 reply 
Solved
Best answer (according to Alday3)
nick from United States 2 years ago
disconnect all the connectors to the coils and can pull fuel pump fuse for extra
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4l60e transmission problem

Chevrolet Silverado 1500 2007 lt crewcab 4.8 214696 miles
Bought the truck used, it ran fine for bout a year then transmission starts acting strange. Wouldnt shift out of second gear, troublecode po967, low voltage shift solenoid b. I changed that still no imporovement. Changed ignition switch cuz everyone was saying it had a voltage drop at the switch, still didnt fix it. I found a bad ground wire so i fixed that, kind of improved but now the speedometer doesnt work sometimes and when it isnt working it wont shift out of second gear. But when it is working i have to shift manually for it to work correctly other wise when taking off from a stop it will start off in 3rd gear. Troublecode still only shows p0967. One other thing aotomatic door locks dont work
youngblood48 from United States 8 years ago  
YO
15 reports 
V Drive from United States 4 years ago
Exactly! Replaced trans, worked a few months then 2nd gear, replaced input speed sensor twice and entire ignition.
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Ecm relay making a clicking sound SolvedSolved

Chevrolet Silverado 1500 2014 Chevy Silverado 1500 5.3 135836 miles
Just finished rebuilding the engine and after installing the engine and trying to start the truck the Ecm relay starter a clicking sound and the Truck won’t start but as soon as I move the wire under the fuse box the car turns on. The wire is under the ecm relay. I’m not sure if the wire is broken or did I miss something while installing the motor. If anyone else had this problem before please let me know thanks 🙏
2ssCamaro from United States a year ago  
2S
2 reports 
Solved
Best answer (according to 2ssCamaro)
2ssCamaro from United States a year ago
Forgot to tighten one of the ground wire
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Starts run for few seconds then dies

Chevrolet Silverado 1500 2015 5.3 V8 4 wheel drive  120000 miles
Truck will start run about 30 seconds then dies and will not start again have replaced both fuel pumps crank sensor spark plugs throttle body and map sensor
Tammy from United States 3 years ago  
TA
4 reports 
Mcguyver from United States 3 years ago
Is there a key light or light saying security flashing or illuminated at all when this happens you may need to reprogram your transponder in your key...putting some fuel directly in the throttle body without turning the key off after this happens and trying to start it back up would indicate if it starts again that you have a fuel issue most likely… if the computer doesn’t read the transponder in the key it’ll have similar symptoms have you run diagnostics since the condition had occurred
Tammy from United States 3 years ago
No key light and throwing a p1400 code cold start
hunt from United States 2 years ago
@Tammyim having the same problem
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Electrical/won't start

Chevrolet Silverado 1500 2006 Extended cab 4x4  199256 miles
Sorry in advance for the length of this. This truck has set for a couple of years the mice have found it home. I've not yet found chewed wires anywhere but there has to be some. I put a used battery but a good one in it and tried to start it nothing happened at all. I started looking into the fuses. I found several missing one of my boys must have needed some I guess. I don't know if I have found all that is missing and I'm not sure how to find out if ive got them all replaced. So I finally get some dash lights to come on battery light, brake light, and of course the lock down is also on. T… Read complete
watermaster1970 from United States 3 years ago  
WA
2 reports 
WhyIHateChevy/GM from United States 2 years ago
Have you had any luck?
Cara from United States 2 years ago
I was going down the road in my 03 Chevy Silverado 1500 and all the sudden it went dead and now I have no lights and it will not start
nick from United States 2 years ago
this one is tough. i would start easy. fuse , battery , starter , alt , check for good grounds and loose or damaged wiring
SSS 369 from United States 2 years ago
my02 gmc sierra did the same ,was the knock sensors fixed that ran now wont start obd2 sayin camshaft position sensor
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Wiring problems

Chevrolet Silverado 1500 2000 5.3liter 235000 miles
My Silverado was broken into an they cut my stereo harness an took something from my fuse box on the side of the dash. A relay or plug of some sorts now my truck won't start turn over or none of my gauges work? Any advise would be so great to have my truck back
Monkeymike from United States 3 years ago  
MO
1 reply 
Rowdy Rex from Canada 2 years ago
Check the underhood fusebox for a bad ignition relay or one of the 40 amp ignition fuses good luck..I have a 2001 Silverado 1500 4.8 Litre and i had same issue ,Shorted out 40 amp igntion fuse,Fired right up after replacing it...PC
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2000 Chevy Silverado 4.8 cranks over but does not start

Chevrolet Silverado 1500 2000 4.8 22000 miles
I recently just replaced the head gasket in the intake manifold gasket and went to start it and it cranks over but it won't start and then I have no spark to My plugs checked plug connections checked fuses kind of lost
Guido from United States 4 years ago  
GU
6 reports 
Mantis4987 from United States 3 years ago
Double-check all components underneath the distributor cap and ignition connector harness. Spark plug wires included. Now, do you have a signal or audio sound for the fuel pump while the key is in accessory mode? Does the fuel pressure rail consist of high-pressure or low-pressure flow?
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Not Starting

Chevrolet Silverado 1500 2006 LS 5.3 303285 miles
I just finished rebuilding the 5.3 in my truck. I have had issues with the security several times and it happened again but this time it won't start even after doing the relearn on the key. It still acts like it's the security has the injectors shut off. Does anyone have any suggestion
Chevrolet Dreams from United States a year ago  
CH
1 report 
Chevrolet Dreams from United States a year ago
I have been trying all day and it still won't start. I have done the relearn on the key more times than I can count. I have unhooked the battery and drain the battery in the ecu and let it sit unhooked from the battery for several hours. I have checked every fuse and relay and nothing has worked. I can still access the ecu with my code reader and the only thing that continues to show up is o2 sensors low voltage. Any help would be appreciated.
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Truck won't always start and the lights flicker when it wont

Chevrolet Silverado 1500 2018  160000 miles
Truck sometimes start and sometimes doesn't when it doesn't lights flicker we replaces the starter fusebox and alternator but it didn't fix it and now it makes us do ainti theft stuff in order to start it every time we been trying everything to fix it what do we do????
Frags45 from United States 2 years ago  
FR
1 report 
nick from United States 2 years ago
check ground connection on starter
Joe Smuf from United States 2 years ago
Check youtube ground G218
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Wont start,, battery is charged

Chevrolet Silverado 1500 2007  215000 miles
Battery is charged,, ignition is dead,, have replaced several fuses under the hood
MICHAEL from United States a year ago  
MI
4 reports 
Cody from United States a year ago
Same thing 2016 Chevy
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Not starting

Chevrolet Silverado 1500 2001 odyssey  250000 miles
I have a 2005 sliverdo first the starter stoped working i had to hot wire it -then the transmission started to slip when talking off no the motor turns over but won't start itwas starting when i use starter spray then dies now that dont work
Ricky from United States a year ago  
RI
1 report 
nick from United States a year ago
Can you turn ur motor by hand?
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Will not start

Chevrolet Silverado 1500 2003 4.3 200000 miles
I have a 2003 Chevy Silverado 1500 4.3 L I changed the engine control module and it started and installed and it won't start any suggestions I've changed spark plugs spark plug wires distributor distributor cap and the coil also
Noah Norman from United States 2 years ago  
NO
4 reports 
Linds1730 from United States 2 years ago
you need to do a 30 minute relearn on it. try to start it and when it cuts back out leave your key on and let it sit for 10 mins exactly keep a timer and do this 3 times in 10 min intervals and after the 3rd time it should start hook your battery up to a charger and be sure it doesnt die during this procedure. if it doesnt start keep doing the test of 10 min intervals 3 times until the system has relearned the computer
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Rain damage

Chevrolet Silverado 1500 2003 5.3 2wd  130000 miles
Left the window down during a rain storm driver side now I have no power from door, panel and truck will not crank or start. When turn the switch, the gauges work, but turn the key. Nothing happens. Can fill the relay, clicking starter has power. Fuel pump comes on.
King hippo from United States 3 years ago  
KI
6 reports 
Gmanee from United States a year ago
I'm having the same problem
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There is no spark in my 1998 chevy silverado

Chevrolet Silverado 1500 1998  150000 miles
Has new knock sensor...new computer...new distributer cap snd rotor...new ignition coil...but still no spark
RXOG from United States 4 years ago  
RX
5 reports 
John from United States 3 years ago
Ignition control module in the distrutor cap
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Power loose

Chevrolet Silverado 1500 2007 Extended cab 5.3 vortex classic 200003 miles
Service engine came on. Then instrument panel displays power lose. I replaced all of the sensors on my engine. Replaced ecu, throttle body control module and the connector, fuel injector all 8 , 8 spark plugs, and plug wires, fixed electrical short in the wires2 inches from BCM. It turn over but does not start. Im going to replace the fuel pump next. Any ideas I had the ecu programmed by a dealership. Cost 150 dollars. Crank no start. Dealership said replaced the Bcm. I did also reset the bcm to my truck. Security light went off also.
JohnnyAgent from United States 2 months ago  
JO
2 reports 

Fuses missing

Chevrolet Silverado 1500 2020 4 cyl 80000 miles
Some one removed my starter relay along with other relays. Starter won't turnover
1
Phinaz from United States 3 months ago  
PH

New battery, New plugs/wires and now I have power but no crank no noth

Chevrolet Silverado 1500 2006 Ext. Cab Z71 4x4 5.3L Vortec 189000 miles
I put a new battery in this truck about a week ago. Then a few days ago I ended up getting ahold of some bad fuel which had me stalled out in front of my house barely making it back from the store. So long story short... when getting fresh gas In the tank I figured I outta go ahead and change the plugs since I had them anyway plus the bad fuel issue figured it wouldn't be a bad idea. Then that lead to 5 out 8 broken spark plug wires which took another 2 days to be delivered. So now I get these replaced everything sound as it should be and now I turn the key, I have plenty of power from the bat… Read complete
Camkan12 from United States 4 months ago  
CA
1 report 

Service theft deterrent system

Chevrolet Silverado 1500 2015  120000 miles
Sometimes my truck will not start and it says "Service theft deterrent system. " It also stays low battery sometimes but I have a new battery in the truck and the key fob. I've tried the 30 minute rule, locking and unlocking with the key, and uncabeling the battery. I am lost.
Randall from United States 4 months ago  
RA

Truck won't start

Chevrolet Silverado 1500 2017 Crew cab 5 l 95000 miles
It had 51,000 Mi two and a half years ago when I bought it. It has 95,000 on it now. New battery 14 months ago. It has plenty of juice. So I think it's either the starter, or maybe a starter relay.
Mick from United States 6 months ago  
MI

Easiest Way to replace the battery cables to the starter

Chevrolet Silverado 1500 1996  200000 miles
Hello, I have a 96 Silverado and I need to replace the battery cables ,and I haven’t been able to locate the easiest way to get down to the starter since it’s all the way at the bottom Does anyone have any tips since its a tight squeeze.
Anna2u from United States 9 months ago  
AN

Key won't start the engine

Chevrolet Silverado 1500 2015 1500 2303131 miles
Key won't initiate the starter
2lamar1975 from United States 10 months ago  
2L
1 report 

Passlock Silverado

Chevrolet Silverado 1500 2000 1500 Lt 5.3 309000 miles
Passlock kicked in i wired the orange and black and yellow together to get it started. Then replaced key cyclinder and ignition switch but security light stays on when not running it flashes battery light and security light tried the resistor 22000 ohm tween the orange black and yellow did not work tried relearn in process didn’t work not sure where to go now but I want the light out. Is the cyc housing bad ? Do I replace passlock module anyone been in this predicament?
Mickey from United States a year ago  
MI
1 report 

Iso electrical diagrams on Silverado 5.3

Chevrolet Silverado 1500 2003 Chevy Silverado 15004x4 5.3 123456 miles
Needs to rewire the ignition system all together and security and everything in the system bumper to bumper
1
2
Snakebyte from United States a year ago  
SN

Alternator went out made it home everything good lights brakes steerin

Chevrolet Silverado 1500 2014 Crew cab 148000 miles
My truck won't start after replacing the alternator
Die hard from United States a year ago  
DI

Parasitic draw?

Chevrolet Silverado 1500 2003 Silverado 1500 v6 190000 miles
Just replaced the ignition coil but now the idle control system is showing up on the scanner. And the battery dies over night and the parking lights fuse is buzzing. The truck is running real bad and has no take off power what is going on?
Trich from United States 2 years ago  
TR
3 reports 

Interior warning, lights

Chevrolet Silverado 1500 2009 Lt 4.6 2 wheel drive  170000 miles
All warning lights on the dashboard started flashing on and off, Turned engine off. Now I have engine light and lock light, will not start, good battery. Disconnected battery for 24hrs, started right up, now I have Service air bag light and inside lights stay on and runs battery down, pulled fuse for inside lights for now.
Wirenut from United States 2 years ago  
WI
12
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