Starter runs constantly

[shanetx]

I have a 2007 Yukon XL 1500 SLT 2WD.

After some intermittent ongoing electrical issues, I replaced the positive battery cable that runs from the battery to both the starter and the mega fuse on the firewall. After it was installed, as I reconnected the negative cable to the battery, the starter runs immediately. This was not a problem before.

Possibly related: The post/bolt on the starter solenoid which accepts the cable from the battery is somewhat loose, and I'm concerned I might have over-tightened the nut when installing the positive cable. I noticed the bolt was twisting in the solenoid, and it actually moves side to side or up/down slightly. This only happens when the nut and cable are removed.

Any ideas would be appreciated, thank you.

 

[OR VietVet]

I have a 2007 Yukon XL 1500 SLT 2WD.

After some intermittent ongoing electrical issues, I replaced the positive battery cable that runs from the battery to both the starter and the mega fuse on the firewall. After it was installed, as I reconnected the negative cable to the battery, the starter runs immediately. This was not a problem before.

Possibly related: The post/bolt on the starter solenoid which accepts the cable from the battery is somewhat loose, and I'm concerned I might have over-tightened the nut when installing the positive cable. I noticed the bolt was twisting in the solenoid, and it actually moves side to side or up/down slightly. This only happens when the nut and cable are removed.

Any ideas would be appreciated, thank you.

Solenoid failure. Replace the whole assembly.

 

[shanetx]

Solenoid failure. Replace the whole assembly.

Thanks raiderron. Any idea as to why the solenoid would fail after replacing the positive cable?

 

[OR VietVet]

You said yourself that the solenoid bolt was loose. Coming apart inside and likely causing problems. The starter running constantly means it could also have a damaged starter drive from engaging teeth. If old enough I recommend replacing whole assembly and be done with it. Use AC Delco parts.

AC Delco new #3371119

AC Delco Reman gear reduction #3362002A

AC Delco Reman 3231644

All come with solenoids

AC Delco starter relay #D1786C

 

[shanetx]

New starter

Thanks for the input. Problem solved. I replaced the starter, but had to go with Autozone's Duralast because I couldn't wait for an AC Delco starter to ship. It came with a lifetime warranty so we'll see how long it lasts.

Sidenote: The Duralast turns over more quickly/intensely, and whines for a couple seconds as it winds down. Distinct difference in the sound compared to stock.

Thanks.

 

[Teal]

2007 Tahoe LTZ 180,000 miles How do I know when the starter solenoid needs replaced. When the truck sits a while, like overnight,, the first start will stick on after the engine has already started. Its like the starter get stuck on. Replaced the starter a month or two ago and no change.