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Factory Reciever Hitch Interchangeability

oldscsc

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oldscsc Enthusiast

oldscsc

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Found a reciever hitch at the junkyard today on an '03. He wanted $50, I brought $45 and he wouldn't come down :ughdance: Wiring and bolting it on will be the same as a '99-'02 right? (If I go back)

tylerjenkins92@aol.com Senior Enthusiast

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Posted
Posted
Found a reciever hitch at the junkyard today on an '03. He wanted $50, I brought $45 and he wouldn't come down :ughdance: Wiring and bolting it on will be the same as a '99-'02 right? (If I go back)

 

Yes, they are EXACTLY the same.

MS3DALE Senior Enthusiast

MS3DALE

Posted
Posted

Just make sure its not off an HD...The HD hitches are different.

MS3DALE Senior Enthusiast

MS3DALE

Posted
Posted
Just make sure its not off an HD...The HD hitches are different.

 

Oh, I didn't know that. How are they different?

 

 

They actually sit down lower on the HD trucks,since the HD's sit up higher.

Also the frames are different on the HD's.

tylerjenkins92@aol.com Senior Enthusiast

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Posted
Posted
Just make sure its not off an HD...The HD hitches are different.

 

Oh, I didn't know that. How are they different?

 

 

They actually sit down lower on the HD trucks,since the HD's sit up higher.

Also the frames are different on the HD's.

 

 

I never noticed that, I guess I need to look closer. :ughdance:

oldscsc Enthusiast

oldscsc

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Thanks for the interesting info Rich.

 

You guys were spot on. Hitch bolted right up, six 7/8" bolts and she's on. Now to find my wire strippers....

 

I do have a question though. What is the piece of metal to the left of the receiver for? It has a large hole in it (the piece that has the hitch rating on it. I can get a pic tomorrow once the sun comes up).

MS3DALE Senior Enthusiast

MS3DALE

Posted
Posted
I do have a question though. What is the piece of metal to the left of the receiver for? It has a large hole in it (the piece that has the hitch rating on it.

 

 

Thats for the 7-way trailer-wiring harness receptacle.

oldscsc Enthusiast

oldscsc

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Receptacle huh? I only have the plug itself. I figured I was missing something because I've seen a flip down cover for the plug on other trucks. I was wondering how that plug mounted there..

 

If anyone cares, there's a couple differences on the '99-02 and '03-06 wiring.

 

'99-02 has six wires. All of them color match to the '03-06 plug except the ground (white on the '99-02, thick black wire on the '03-06). '03-06 has eight wires. The six on the '99-02 (park lamps, backup lights, right turn signal, left turn signal, ground, and CHMSL [which was ran into a fitting separate from any of the others on my truck]), plus a red (battery) and dark blue (electric brake).

Trav_13 Senior Enthusiast

Trav_13

Posted
Posted
Receptacle huh? I only have the plug itself. I figured I was missing something because I've seen a flip down cover for the plug on other trucks. I was wondering how that plug mounted there..

 

If anyone cares, there's a couple differences on the '99-02 and '03-06 wiring.

 

'99-02 has six wires. All of them color match to the '03-06 plug except the ground (white on the '99-02, thick black wire on the '03-06). '03-06 has eight wires. The six on the '99-02 (park lamps, backup lights, right turn signal, left turn signal, ground, and CHMSL [which was ran into a fitting separate from any of the others on my truck]), plus a red (battery) and dark blue (electric brake).

 

How does a guy get the Battery Wire Back there on an 01 Sub...is really the only way to run it from the front of the truck? I can't get my Interior Lamps in my trailer to work, I am assuming I am missing wires for that feature....my 09 Sierra was just as easy as hooking up the Wire Feed next to the Fuseblock.

MS3DALE Senior Enthusiast

MS3DALE

Posted
Posted
If anyone cares, there's a couple differences on the '99-02 and '03-06 wiring.

 

'99-02 has six wires. All of them color match to the '03-06 plug except the ground (white on the '99-02, thick black wire on the '03-06). '03-06 has eight wires. The six on the '99-02 (park lamps, backup lights, right turn signal, left turn signal, ground, and CHMSL [which was ran into a fitting separate from any of the others on my truck]), plus a red (battery) and dark blue (electric brake).

 

Yep,I was going to mention that,but I thought you were just concerned with the hitch itself fitting.

The trucks actually went to a completely different electrical system/architecture for the '03 model-year,most electrical items from '99-'02 won't work,or require modifications,on the '03-'07 trucks due to this.

oldscsc Enthusiast

oldscsc

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Well I figured the plugs would be a little different, but both the donor truck and mine still had the wire ID tag so I was golden.

 

Not that I'll ever need it but why would they have the CHMSL dead ended?

MS3DALE Senior Enthusiast

MS3DALE

Posted
Posted
Not that I'll ever need it but why would they have the CHMSL dead ended?

 

In case someone adds a camper top,or a trailer with a 3rd brake light,they could use that wire.

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