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Chevy Silverado and GMC Sierra Stalling Problem

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  • Hey I got a 1995 gmc sierra 5.7l v8 z71 with 450,000k and well this problem first started after i drove for about 25minutes or + then parked for 5 minutes and restarted my engine almost immediately after started its like it stalls. The battery volts go down oil pressure goes down and it vibrates and shuts off. happened alot during the summer and then stopped for a month now even sometimes when im driving alot even in a parking lot the same thing happens im accelerating and then its like it looses power and battery volts go down as well as the oil pressure and dies but i can start it right away. and sometimes when its doing this if i accelerate alot harder it won't die. For winter i need tires rear brakes and my power steering pump is leaking so before i start putting money into this i need to fix this issue. Any thought or potential solutions would be greatly appreciated.
  • krc4x4krc4x4 Posts: 1
    I'm not sure if you have fixed your problem yet, but I would try the remote battery terminal. Loosen the bolts and hit all the contacts with a piece of sandpaper or steel wool or something. After years corrosion builds up and doesn't break the connection, but can weaken the flow of current. Like I said, I'm not sure if it helps @ all, but I've had several vehicles that had that problem and that is what it was. I hope it helps.
  • i tried that last week and it is still happening, however when the truck shuts off my battery light and my check gages light comes on so does that mean all this is my battery? cause when im driving and accelerate and it sputters it doesnt shut off then so is that a different problem?
  • andyrogers442andyrogers442 Posts: 2
    edited December 2012
    Truck battery died tried to jump it. Didn't work. New battery starts fine,runs fine but lights dim at stops. Truck idles down and wants to stall. Hit the gas back to normal. Alternator tested good, ground looked good, checked blower motor resistor looked fine, and blower works fine. Also truck stays running if heater is off at low RPM's. Any comments could help
  • Hi my names Lisa and i have a 1999 chevy silverado 1500. Were having the same problem the rpms started going crazy and it started revving itself at red lights and stop signs etc. we changed everything we could think of put new spark plugs, wires, fuel filter, air filter, mass airflow sensor, got the iag valve cleaned and more stuff i cant think of right now. its still doing it and its getting way worse. now at stop lights etc anytime its supposed to idle it stalls and chokes out. i dk what to do help
  • obyoneobyone Posts: 8,065
    Have you cleaned the throttle body? and check the linkages?
  • egonzaegonza Posts: 1
    edited February 2013
    Hello,

    I have a 2003 silverado 4.3L that I have an issue with when I try to accelerate. I turn the truck on and it turns on perfectly fine, when I put it in gear and try to take off it stalls like if gas was being restricted, this is only when i have it in drive! I can drive it but it will stall literally every other second and i've noticed that when it blows black smoke. It doesnt give me any check engine light, put a scanner in and no codes....I have replaced fuel pressure regulator, fuel pump, fuel injectors and fuel filter and not it does this...any help will be appreciated.
  • Sorry everyone.My problem went away, don't know why but it did
  • rranerrraner Posts: 1
    I have a '95 k2500 silverado 6.5 turbo diesel 4x4 with around 250,000+ miles on it. The beginning of February I drove it one morning and everything was fine. left for home in the evening still fine. Stopped to do something then went to turn it on (belched black smoke) and it stalled almost immediately. This happened several times in a row. Waited on a mechanic to show up and by the time he got there it started up and ran fine. Got almost home and it stalled out again. Next day this happened again and it stalled out while I was driving this time. Started it up just fine but no smoke this time. Its now the middle of March and I just got the money up to replace the lift pump drive (been sitting since February). Put it on last night, drove it today and still after 30 minutes the truck wants to die. Last year I had to replace the fuel pump 2-3 times. If I replace it again will this solve the issue? I'm at the limit of what I know to do. Does anyone have any suggestions please?
  • KCRamKCRam Mt. Arlington NJPosts: 3,516
    Black smoke means the engine is getting more fuel than it can handle (diesel tuners used to pride themselves on how much black smoke they could generate with fueling boxes). It almost sounds like your stalling is due to fuel flooding. You'll probably need to mount a fuel pressure gauge and check to see if you're in spec - it could also be your fuel pressure regulator that's failing.

    kcram - Pickups/Wagons/Vans+Minivans Host
  • sb8807sb8807 Posts: 1
    my 99 chevy silverado 4x4 5.3L v8 has for a while been stalling out while im driving down the road. i will be driving along and suddently you feel the truck begin to slow in speed, the throttle doesnt respond and when you come to a complete stop the RPMs which usually run around 1000 are down to 250. i have to turn off the truck and wait a few minutes then restart, this doesnt always work and have to wait longer periods of time. after the RPMs return to 1000 my truck will creep along like its trying to go before you feel the truck suddenly begin to accelarate and runs fine before the problem persist. have changed spark plugs, fuel pressure regulator, and fuel filter. have also recently replaced the starter. any suggestions.
  • Might be a knock sensor. A malfunctioning knock sensor could cause ignition timing to be too far advanced, which would cause the "clattering" sound and drivability issues. If that is the problem, it should run fairly well at higher speeds and light loads. Might be able to verify with timing light.
  • obyoneobyone Posts: 8,065
    Have you cleaned your throttle body lately? Now might be a good time.
  • tcc1973tcc1973 Posts: 1
    I've never had this problem with my Silverado, but I have seen this with my other vehicle(99 Chrysler LHS) and like you, I changed a lot of sensors before I got to the Throttle Position Sensor. Some days it would run fine, other days it would bog down and stall. Definitely test and/or replace the TPS.
  • 2013ltz622013ltz62 Posts: 2
    i have a 2013 6.2 and i have 2 issues, biggest issue is at slight acceleration the engine stumbles/hesitates/misses which you can feel as well as the tach goes up and down 100 or so rpm, no codes, was told by the dealer i need to wait till it throws a code....it bothered the hell out of me so i brought it back to the dealer, the tech hooked up a handheld scanner and 20 seconds later he said it needs a cam? since it wasnt a consistent hesitation and no back firing plus it ran great wot it was hard to believe, i questioned him and he said he has done 200 cams in this engine, i asked if he meant the 5.3 etc? he said no the 6.2? he said he "wasnt 90% sure it needs a cam but he was 100% sure", i said a cam sensor {still not thinking it needs a cam}, he said no,a cam, it would take 3 days-did i want to leave it, i said no then i said the reason i bought the 6.2 because i thought the 6.2 l series platform was proven to be a good engine and it was a high hp engine with the roller cam etc, he said the roller lifters get slightly turned in the plastic lifter guides and the roller cuts a groove in the cam...i could not believe what i was hearing after 2000 miles....now what? ANY HELP IS NEEDED, THANKS EVERYONE
  • KCRamKCRam Mt. Arlington NJPosts: 3,516
    A 2013 with only 2000 miles is fully under warranty. At long as it's no cost to you, let him do the cam.

    kcram - Pickups/Wagons/Vans+Minivans Host
  • dsavoy23dsavoy23 Posts: 1
    I've also got a 93 Silverado Z71. Mine will cut off when I put into reverse and sometimes at idol. It shuts off and I lose power steering, breaks, and check battery comes up. Almost like I was out of gas. But it would start back up with no problems. It's currently in the shop and I haven't heard back from them on what they think is going on. It sounds real strange and I'm glad to find others with the same problem
  • lprimolprimo Posts: 1
    While driving my 99 silverado in hot weather (110) i have to rlease the gas pedal to shift from first gear to second gear. This does not happen unless it is very hot outside. I dont have any check engine lights on and when i took it to my mechanic he said the temp on the transmisson looked good and of course when he took it for a spin it shifted correctly without a problem. Any idea what it might be.
  • i have a 2013 silverado that needs a harness, its been ordered for 2 weeks already and it wont be available for at least 2 more weeks! wth.A WHOLE MONTH+ JUST SITTING THERE WAITING ON 1 PART FROM BIG OLD GM, ...i called gm {government motors} in detroit and the generated a case number, they called and said there is nothing they can do, its going to take a whole month to get this part because the ones they have are for new trucks being built!!! she had the typical i dont give a sh.. attitude.... THE 1 TIME I TRY A CHEVY INSTEAD OF A FORD I GOT BIT IN THE [non-permissible content removed].. GM {GOVERNMENT MOTORS} AND CHEVY CAN KISS MY [non-permissible content removed], A WHOLE MONTH TO GET A PART FOR A BRAND NEW TRUCK!! THEY SUCK AND WHY WE BAILED THEM OUT IS RIDICULOUS BECAUSE THEY HAVE THE GOVERNMENT ATTITUDE, MONEY IS FREE AND REAL PROFIT FROM CUSTOMER SATISFACTION DOESN'T MATTER ANYMORE.. BUY A FORD! FORD KEPT GOOD BUSINESS GOOD TAKING CARE OF THE CUSTOMER AND DIDN'T PUT THEIR HAND OUT LIKE CHEVY-GM...I WILL NEVER BUY ANOTHER CHEVY, ..WAIT TILL YOURS BREAKS DOWN, YOU BETTER HAVE A BACKUP CAR ,IT WONT BE A GM PRODUCT!!

    I HAVE FOUND 3 GOOD FORUMS TO POST THIS TRUTH, PLEASE LET ME KNOW OF ANY OTHER GOOD FORUMS TO POST TO........THANKS FOR LISTENING TO THESE 100% TRUE FACTS
  • i have a 6.2L as well. i have been having an issue with hesitation for about 9 months. i have taken it to 2 dealerships and GM told me today there isn't anythign wrong with it. were they able to resolve your issue by replacing the cam? i don't know what to do, i bought the truck new, it's a 09 and it only started about 9 months ago.
  • I have a 2009 silverado 6.2L. I bought it new, and about 9 months ago it started to shift bad. i have been fighting GM to fix it, they replaced the transmission in Feb, however the issue was not resolved. I am at dealership 2 now and GM called me today to tell me that tech support says nothign is wrong with it. The guys at the dealership know there is, but now they are tied down because GM says it's normal. Anyone have any ideas? It's not throwing codes, the data recorder comes back normal. It doesn't do it all the time, but upon acceleration it will hesitate/slip between gears.
  • gmcustsvcgmcustsvc Posts: 4,139
    Hi slbailes,

    I understand the frustration you're feeling with your vehicle and apologize that the dealership hasn't been able to find the cause of your concerns. Have you spoken to GM Customer Service about this issue? If not, we'd like to set up a customer case for you within our system to document your transmission shifting concerns. If this is of interest to you, please feel free to email me at socialmedia@gm.com [attn Amber]. Please reference this post and include your full name, VIN, mileage, and dealer. Please feel free to include your screen name as well.

    Thank you

    Amber N.
    GM Customer Care
  • Thanks for responding. The dealership has been working with GM. yesterday the dealership claled me and said that techs (on the phone from GM) can't figure out what is wrong so they said the truck is operating within limits. the dealership is telling them it is flaring and not shifting right. But they said if GM tells them to not do anything they can't. I am calling lawyers today, to sue GM. They can't refuse to fix my truck when the dealership is telling them it's not running within limits. Some guy on the phone who has never seen my truck will not tell me that my truck is fine. I paid $64,000 for my truck, it will be fixed.
  • gmcustsvcgmcustsvc Posts: 4,139
    Hi slbailes,

    Again, I understand that this situation is highly frustrating for you, and I apologize that your vehicle hasn't been fixed yet. I would be more than happy to take a second look at your case to ensure that every option is being considered to resolve this issue for you. If you decide to hire a lawyer however, I am no longer allowed to assist with this situation.

    Thank you

    Amber N.
    GM Customer Care
  • I have this same problem. Mine is a 2010 with 42000 miles. Im ready to trade it for a FORD
  • gmcustsvcgmcustsvc Posts: 4,139
    Hey 6_2lsilvy

    Have you been working with your dealership for the shifting issue or have they not been able to recreate the problem? If you'd also like for us to start a case for you in our system and try to look more into this situation for you please let us know.

    Amber N.
    GM Customer Care
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