Tow/haul mode

[Motrhedx81]

Where did you get your tow/haul button?

 

[Supercharged111]

Universal Trigger Module - PAC

Simplify your install

catalog.pac-audio.com

This is what you want. It’s way easier than a latching relay circuit and takes up way less room. This is what I ended up doing on mine and it works perfect. Push the button light comes on, push it again OR turn the key off, it it goes off amd stays off when key back on.

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*edit** I guess wiring info would help lol. On the TR-7 Brown ties into the trigger wire from switch to the ecu. Blue is +out to the light. And of course red 12v+ and black ground (also ground out light) that's it, just 4 wires. Easy??

Do I spy Dakota gauges? With c0mmi3 units?

 

[Cadillacmak]

Universal Trigger Module - PAC

Simplify your install

catalog.pac-audio.com

This is what you want. It’s way easier than a latching relay circuit and takes up way less room. This is what I ended up doing on mine and it works perfect. Push the button light comes on, push it again OR turn the key off, it it goes off amd stays off when key back on.


*edit** I guess wiring info would help lol. On the TR-7 Brown ties into the trigger wire from switch to the ecu. Blue is +out to the light. And of course red 12v+ and black ground (also ground out light) that's it, just 4 wires. Easy??

You are the MAN! What gauge set is that?

 

[TonyM]

Where did you get your tow/haul button?

It came out of an early 2000's S series Blazer or Jimmy. The S trucks had them too

Do I spy Dakota gauges? With c0mmi3 units?

You mean Metric? Lol

You are the MAN! What gauge set is that?

It's a Dakota Digital VHX

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[L31MaxExpress]

Where did you get your tow/haul button?

03-07 Express/Savanna vans have the same button.

My 97 van has the shifter for a 2000-2005 Astro. It fits the trucks too and has the button like a GMT800 does on the end of the shifter. My 99 Tahoe also has the Astro/Safari shifter handle.

 

[L31MaxExpress]

I have actually been meaning to look for a 99-2000 GMT800 4.3L V6 or 2000 Astro/Safari PCM wiring diagram for some time now. Both had factory Tow/Haul and both were still Black Box PCMs. The Astro did not have a BCM either so it was an analog request signal and Tow/Haul light as well. The Performance mode shift tables are there in the Black Box labeled as Economy but the input that triggers them has never been posted. The GMT800/Astro black box diagram should show where it is hiding.

Similarly I need to find a diagram for the Kodiak trucks with an 8100 with a 0411 or P59 to find the analog Oil Life change oil light output.