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2001 Silverado 2500 HD 8.1L Starting Issue

krazymatt

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krazymatt Enthusiast

krazymatt

Posted
Posted

I'm trying to do some research here to help my dad out with an issue on his truck. It's a 2001 2500HD with the 8.1L engine. Suddenly the truck just won't start. When you put the key to the start position it just makes a humming noise. He's verified the battery is good and tried jumping it and removed the starter and had it tested at the parts store and it is fine. Any ideas? He talked to a local mechanic as well as to techs at the dealer and both sources suspected an antitheft device malfunction. The tech at the dealer told him it's most likely a box that has to do with the anti theft device which usually comes with a new key when bought and the price is $800 just for the part? Any ideas on if it could be the problem and is there any way to bypass this thing? I've heard of other GM vehicles of this vintage needing a new ignition switch but I've never heard needing to replace the "box"????? Any info is greatly appreciated! Thanks........

poppatello Enthusiast

poppatello

Posted
Posted

How many miles on it? Is it an auto or manual? If it's an auto make sure the shifter is all the way in park. If manual it could be neutral saftey switch...

krazymatt Enthusiast

krazymatt

Posted
  • Author
Posted

It is an auto with just over 100k miles. I stopped in to check it out for myself last night and it makes like a electrical short sounding buzz from the lower left part of the dash. Also the radio flashed error and the wipers and other lights are really weak. What would be under the dash towards the far driverside? When you here the buzz you can almost sense a vibration from back there. Thebuzz only happens when you attempt to crank the engine.

ujtruck Enthusiast

ujtruck

Posted
Posted

is engine crank at all?

 

check your ground cable, also test starter wire at solenoid with a DVM (digital volt meter)

krazymatt Enthusiast

krazymatt

Posted
  • Author
Posted

Update!

 

So it is a bad battery but not in the form of voltage. It is a Diehard Platinum with both top and side terminals. Well the side terminals attach somehow to the top posts in the most funky worthless design I have ever seen. Like some plastic piece which the side terminal is attached to goes in through the side of the battery under the top posts. Well the negative side I noticed was loose so by just removing the negative side cable and just touching it to the top post and wha la the truck started. He was going to get some top post adapters to try and make it work that way while he can get to sears to see about warranty but I told him to get his money back and get a different design of battery because that problem could surface again while away from home. All I know is I will never buy a battery from sears. That's for sure!

  • 3 weeks later...
fixithud Enthusiast

fixithud

Posted
Posted

my father had this issue with a 5.3 in a 1500. turned out to be related to the security system. Truck would not start, sit there a while, good to go. Ignition interlock maybe???

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