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GM PN# 89017847
AC Delco PN# 323 1640 A22

If I understand correctly this is the "truck starter" lots of folks prefer for LS3 applications.

I have an LS3 crate engine with a cam that isn't...

It works, there are 10 other identical cars with the same arrangement. Trying to figure out why this one is having issues.

AGAIN, I believe the most likely issue is a wiring connection, I'm just...

Attaching the log of the drive over the train tracks as well where I did not shutdown the car at all, I simply cleared the DTCs in realtime.
143463
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I am inclined to believe this is a result of a bad connection in the wiring. I have mated a non-GM DBW pedal to the GM DBW harness wiring (6 wires). I have also verified that the Electronic Throttle...

It blows my mind this does not come with any info....trying to figure out how it gets wired in also.
Wasting time sifting through a damn forum instead of making progress on tuning the car.

You can't very well self-educate if there is no repository of terms.
Good luck teaching yourself Chinese entirely in English without any documentation of how the Chinese language structure differs....

No problem.

That was the root of my entire misunderstanding of what was going on in these tables.
I actually came across this revelation last night when I found a video where Alvin or a colleague...

I am asking pretty relevant questions. Other GM and Mopar PCMs actually have these tables set up in quite intuitive ways and are HPTuners-supported.
However, I'm sure Holley appreciates the plug...

It sucks almost as much as software companies that sell you their software via proprietary hardware, lock you into restrictive usage parameters, and then instead of providing any support, they just...

Yes, it is set to discrete.
Again these fans are NOT brushless.
This has been explained to me that it means these fans are not variable speed fans.

I will use Alvin's values he shared with me...

Ok gents I appreciate the replies and the file.
My remaining question is:

Is "fan %" a speed value? Meaning 100% is full speed, and 50% is half speed, etc?
I was under the impression that these...

Maybe...
If you are referring to the ganged pair of blue + green trigger wires under the single GM fan relay...then yes, I re-routed the blue trigger wire according to the diagram

The secondary fan is wired according to the diagram posted, not shown in the diagram is the Primary fan which is directly off the GM harness and grounded to chassis.

Thanks for the file. I'll take...

Right now...both fans turn on at 203F and stay on. They are single speed fans as far as I know, that's why I posted the SPAL PN...in case I am mistaken and someone here has used these fans...

Looks like this:
137145

The primary fan is just wired directly from the provided power wire in the GM harness and grounded to the chassis.

Ok...this is starting to make some sense now.

The SPAL fans are identical, and are not brushless.
Driver(primary) / passenger(secondary) side pulling air through the heat exchangers.

So I...

My bad....attached

GM PN# 19354333
--This is the PCM for an LS376/525.

SPAL fans PN# - 30102022


I have re-rerouted the blue trigger wire of the (blue + green) ganged pair from under the GM harness's (PN...

Can anyone explain what the difference is between these two before I purchase?
From what I can tell the only difference is the route which the sensor data takes...ones uses a "sandwich" adaptor to...

MPVI3 includes "pro features"....I've already bought the cable regardless.
From what I have read, the serial-usb adaptor connection is very slow.

Looking for experienced input here.

I need to dial in a new crate LS3 with a BTR stage 2 cam....OEM ECU (E67)

I have not received the ProLink cable yet.
I'm not clear on the difference...

Ended up removing the oil pressure sensor and installing a mechanical gauge so I could verify oil pressure.
Upon re-installing the sensor and starting the car, magically VCM Scanner now shows oil...

I have a crate motor from GM with ECM PN#19354333

When I connect VCM Scanner, I get no engine RPMs and no oil pressure reading...the motor is running so something is obviously not correct.

I...