2006 chev express lly wire harness

[kx1233]

does anyone know if a 2006 lly pickup truck engine and chassis harness fit on a chevy express van max engine. I have a 2006 express van engine with 4l80e for a swap. I have the top engine harness from the van but striking out on the chassis harness, lly vans are hard to find in salvage yards. Looking to possibly using truck harness instead. I can use a standalone harness for the trans management.
Any help would be GREAT

 

[Awenta]

What's it being swapped into?

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[kx1233]

Its being swapped into an Olds Dynamic 88 Bubble top

 

[Awenta]

Van engines are detuned. Building the transmission?

Use a standalone engine harness. Ben can make one.

Btdieselworks

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[duratothemax]

The van harnesses are completely different from the pickup truck harnesses. They are not interchangeable in any way.

Im currently totally rebuilding a standalone van harness for a customer because the first un-named company he had do the standalone harness didnt even know there was a difference (between pickup and van), and they mixed/matched a pickup truck harness with the customer's van harness he sent in. They told him it was an engine problem (because the thing wouldnt even start, obviously) that was out of their control, and they told the customer to buy a new TCM (because the customer was using a van engine/4L80, but the other harness company sent him back a harness that was half van, but the other half had an Allison TCM connector on it, not the 4L80 T42 TCM connector on it)...

Have you tried searching www.car-part.com ?

Ben

 

[duratothemax]

There are three harnesses on van harnesses that are required. The "engine #1" harness that has the ECM connectors on it, the "engine #2/chassis" harness, and the "transmission" harness.

The transmission harness is pretty cheap, $150. But the other two harnesses new are $1500ish. Try car-part.com first.

If you're totally in a bind, I can rebuild a pickup truck harness and custom convert it to van (reconfigure the Allison wiring for 4L80) for less than the cost of a new van harness.

Ben