2008 Truck with a Gen3 5.3?

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11-21-2022
village_idiot

2008 Truck with a Gen3 5.3?

I have a customer that got screwed by the guy he bought this truck from, and is in a mess. It's an 08 Silverado with a 99-06 5.3L engine in it, and is currently INOP.

I know that the E38 cannot control the 24x reluctor.

What my customer searched online was buying a standalone harness, and a P59 PCM.....and wiring it into the truck to use the engine that is existing.

I have suggested buying another Gen4 engine, but he seems set on doing it with the current one.

Will this disaster work? Will it control all the gauges? How screwed is trying this?
11-21-2022
ScarabEpic22

Correct way, pull the motor, swap crank reluctors, put a Gen IV timing cover and cam reluctor setup so it's actually a 58x/4x motor and will work natively with the E38 in the 08 truck.

Cheap way, use the LPE converter box: https://www.lingenfelter.com/product/L460065397.html
I don't know the reliability/durability of them, know they've been around for a while now. I haven't heard or, or looked for, alternate manufactures for this type of thing.
11-21-2022
village_idiot

That LPE box works the opposite way you're thinking. That's for putting a Gen4 engine into an Gen3 vehicle and controlling the 58x using the older PCM
11-21-2022
eXo3901

Maybe a non-GTO E40 will work? Cost of that vs. just changing the physical parts though...no idea.
11-22-2022
village_idiot

I would never willingly put an E40 in anything
11-22-2022
eXo3901

Interesting.
11-22-2022
Alvin

I wouldn't take the job. Either swap the motor over to 58x stuff.. swap the motor.. or customer should find another shop.
11-22-2022
village_idiot

Alvin Im thinking the same thing. He needs to buy a proper engine, or come pick the truck up
11-28-2022
ScarabEpic22

Quote:

Originally Posted by village_idiot

That LPE box works the opposite way you're thinking. That's for putting a Gen4 engine into an Gen3 vehicle and controlling the 58x using the older PCM

DOH! Yea you're right, my bad.

Quote:

Originally Posted by eXo3901

Maybe a non-GTO E40 will work? Cost of that vs. just changing the physical parts though...no idea.

No, just asking for more headaches putting an E40 into a platform (Silverado) that never used it in any generation. Went straight from P59 -> E38.

Quote:

Originally Posted by village_idiot

I would never willingly put an E40 in anything

100% agree with you on this.

Tell him to do it right or get it out of your shop, it's taking up space physically and mentally for you.