wiring harness for brake controller (2003) silverado

mine did not come with one,the dealer says they no longer come with the truck! any one had the same luck, dealer whants $38.00 for one. quite pricey for a pigtail? any answers on this would be great. thanx

Reply to
motomike
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My GM dealer sells an aftermarket pigtail for $11. Gotta buy the fuse too.

Interestingly, the connector on the harness is the same as the '99-'02 models, but the wires are in different holes. By pulling the blue clip, you can rearrange the wires of a '99-'02 harness, put the clip back in, and there you have it. The trick is to know which wire goes where. The parts guy at the dealer rearranged it for me, took about 30 seconds, but I didn't use it - I ended up taking a different route. My solution was to buy the brake controller (Tekonsha Prodigy) pre-wired for '03 GM trucks for an extra $5. Look at

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. At the bottom of the page on that link,you can buy a wiring harness for the '03's for $12.95. It has a Tekonshaplug on the other end, but you can cut that off. FYI, here is a GM document on the subject:

Start GM document ________________________________ Trailer Controller Information The following vehicles are affected:

2002-2003

- Cadillac Escalade, Escalade EXT

- Chevrolet Avalanche

1999-2003

- Chevrolet Silverado

- GMC Sierra

2000-03

- Chevrolet Suburban, Tahoe

- GMC Yukon, Yukon XL

2003

- Hummer H2

Some customers may comment that when the headlamps or park lamps are on, the brakes on the trailer are always applied, or that the back lighting for the trailer brake controller illuminates only when the brakes are applied.

This condition may be due to wiring changes within the vehicle electrical system for the 2003 model year.

Inspect the brake controller wiring harness jumper that is plugged into the vehicle relay block body. The relay block body is located under the left side of the instrument panel near the left kick panel, behind a plastic cover.

The 1999 through early 2003 wiring harness jumper that plugs into the relay block will have a reddish/brown 6-way connector and a tag with the last four digits of the wiring harness part number. Second design 2003 may have a white plastic connector with part number 5418 as well.

- The 1999 jumper is/was PN 12171982 with a pink/purple tag identifier of

1982. This number has been superseded to 15366255, with a pink/purple tag identifier of 6255.

- The 2000 jumper harness is PN 15366255. The pink/purple tag identifier is

6255.

- the 2001-02 jumper is PN 15086884. The orange tag identifier is 6884.

- The 2003 jumper is PN 15085418. The orange tag identifier is 5418.

When transferring the brake controller with the wiring jumper attached from a 2001-02 vehicle to a 2003 vehicle, a change to the jumper harness connector must be performed.

The following information is for the 1999-2002 wiring harnesses.

1999-2002 Wiring Harnesses PIN WIRE COLOR CIRCUIT NUMBER FUNCTION A Lt blue 1620 Stop Lamps B Red 142 Brake Controller 12 Volt Source C Dk blue 47 Brake Controller Outpu (Trailer Brakes) D Brown 2409 Brake Controller Illumination

E -- --

Reply to
Howard McCollister

My fathers new 03 didn't have one but he asked about it and they tossed one in the truck for free. Maybe ask again. The older ones will work just fine BUT you need to swap the light blue and Brown wires around. They reversed them on the new trucks..

Reply to
Steve W.

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