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On light throttle, makes this noise…

Chevrolet Silverado 1500 2015 4x4 177000 miles
Makes a noise almost like when you’re on the highway, and getting out to the side. It has those things that wake you up if you falling sleep, and vibrates. Just like if you run over those rumble strips, but it feels like it’s coming from my rear tires.
Bony from United States 8 days ago  
BO

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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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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Loss power limp mode

Chevrolet Silverado 1500 2008 5.3 flex fuel  2000000 miles
It acts like you don’t wanna shift or it doesn’t have the power to allow the car to even go above 45 miles an hour idles fine. It sounds fine until you try to accelerate change the throttle positioning center.
Bryan from United States 3 years ago  
BR
3 reports 
Bryan from United States 3 years ago
Help me I have change the ecu tps checked fuel comp but can’t check it where it’s messing up help
smokes from United States 2 years ago
might want to check your fuel system i had the same issue n it comes to find out that the senior to the gas wasn’t reading the tank consumption so the engine wasn’t getting the amount of gas it needed there for i kept losing power
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Low fuel pressure

Chevrolet Silverado 1500 2010 5.3 Chevy Silverado 1500 304993 miles
Many problems started close together…. Oil pressure stays fairly low, driving down the highway sudden loss of power went into limp mode only able to get it out by clearing the code with the scan tool and had to do this repeatedly, fuel pressure low, it starts cutting out and back firing around 1/4 tank of gas, lately it’s been idling high and it will return to regular rpm’s if I turn the steering wheel all the way to the left , it will slightly stack and cut out while driving especially upon taking off if the gas pedal is pressed to far and have to ease into little acceleration at a time but n… Read complete
Tiffany from United States 2 years ago  
TI
2 reports 
Hazael S from United States a year ago
Did you solve the problem??
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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 

ABS & ((Brake)) light now on...

Chevrolet Silverado 1500 2000 LS extended cab 3 door, 5.3L 250300 miles
Brake fluid is full. Brakes are new brake system is 100%. Turn the key on pumped gas pedal three times started truck ABS light turned off two seconds later came back on. Was told to check the connections, but it hasn’t rained in six months, the truck hasn’t touched water since. Anybody have any ideas? Thanks in advance.
T0DD from United States 5 months ago  
T0
1 report 

Electrical issue with my transmission system

Chevrolet Silverado 1500 2005 Cat eye 5.3l ext cab 187000 miles
I have done two transmission swaps converter is set correct everything is plugged in linkage is good you can hear it shift freely thru the gears but doesn’t move so before this issues happened that I had to swap transmission apparently the downshift solenoid connector under the filter either got hit on install or didn’t snap down the whole way and came off from the pressure I was stuck on the interstate on a dangerous bridge so I sling shot the truck off the highway meaning went really really fast throttle high dropped down to neutral till I was going too slow than repeat like a sling shot lol… Read complete
Cv jernt from United States a year ago  
CV
1 report 

Gas Miles is Terrible

Chevrolet Silverado 1500 2008 Crew Cab 4X4 4.8  178000 miles
The gas Mileage is only 11 miles per Gal. It's been that way every since I got it. Best I've got is 13. I've changed the throttle body sensor and it got worse and speeds up and slows down when you set the cruse. It feels like your patting the peddle.
1
Im_Big_A from United States 2 years ago  
IM
1 report 

Passlock and factory security system

Chevrolet Silverado 1500 1998 Pu 257000 miles
Due to an attempt to steal my 98 Chevy Silverado my security system will not let my truck start and keep running it will start and die seconds later there's no vacuum going to the throttle body from the gas pump we just put a seal over to the gas pump is there any way to get that vacuum going to push the gas to the throttle body when the security system is cut out
Foxy8869 from United States 3 years ago  
FO
9 reports 

Reduced Engine Speed

Chevrolet Silverado 1500 2010 LS / 5.4 L / 4 door 200000 miles
Ive replaced the throttle body, mass air flow senser, and fuel pump. Ive also cleared the codes and now it wont turn over. Sounds like it wants too but doesnt. Help?
JackJrTx from United States 4 years ago  
JA
8 reports 

Surging bad when idling

Chevrolet Silverado 1500 2002 Silverado 1500 4+4 245000 miles
How to replace the electronic throttle control on a 2002 Chevrolet Silverado 327
Hare from United States 5 years ago  
HA
1 report 
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