2012 5.3 truck with 6l80e (vette tune) won't move.

[bubba68ss]

Swapped a 2012 5.3 e38 with 6l80e into a 62 Willy's wagon. Also installed a speartech tap shift shifter from speartech and flashed in a Vette t43 tune. Engine fires right up but when I put in any gear I have no movement at all. Engine just revs up.

At first I had a p0700 and u0100 code (also still have a map voltage low code) but I turned those off. Still no go. ECM and TCM flashed through the obd plug so comm should be fine. Accessory wakeup voltage has 12v.

This is a customer vehicle who just received some bad news and is trying to enjoy what time he has left. I'm trying to get this done asap for him

Any ideas? Thoughts?

[bubba68ss]

VIN says engine is a 2012 and OS is 12647991
Vette TCM OS (unsure of year) is 24261871

Are these compatible? Is there anything I need to do to verify tcm and ecm are talking? When I try to log t43 I get "generating error.... out of range $03"

[joecar]

With the scantool, there are some pids you can log which show the state of the gear selector lever, the current gear, and other TCM status...

[bubba68ss]

Anything wrong with using a 2013 TCM vette flash with the 2012 truck ECM flash?

[400ss]

it should work 2012 ecm and 2013 tcm but if you can do a 2012 tcm corvette flash with GM MDI or GM tech2 it should work, do you have low voltage code on the tcm? there is a way to phisically fix it, you cant fix that code with the tune.. with engine running try to delete codes and put it on gear , let me know what happens

[bubba68ss]

Ok I have since flashed the original TCM truck tune in and still no output movement no matter what I do or what gear I'm in. I am getting a trans temp reading when logging so I assume communication is good.

Are there ANY basic tests I can do to rule out trans mechanical issues vs electronics? Should I hear solenoids clicking when I use the DVT tab? Are there any PIDs I can monitor for basic diagnosing?

I am not getting any TCM codes at the moment. None are deleted in the TCM since I just reflashed it.

Please help

[bubba68ss]

Is there any way I can command first gear with efilive? Simply putting in drive doesn't not do anything. Fluid is topped off.

[bubba68ss]

Hope this helps. I logged pretty much all trans PIDs and let engine idle. I then went through the gears. scan tool shows shifter position and 'gear' says 1 so I assume its commanding 1 but nothing is happening??? Output speed says 0 but it almost feels like engine load changes slightly when going in D or R

Gear changing starts about frame 220


20406



These are the current tunes


20408
20407

[bubba68ss]

Issue resolved. The mechanic that installed the trans did not put a filter and pickup tube inside the trans. Unbelievable. It was just sucking air. 5 hours of diagnostic time wasted second guessing my harness and tune.

[joecar]

Issue resolved. The mechanic that installed the trans did not put a filter and pickup tube inside the trans. Unbelievable. It was just sucking air. 5 hours of diagnostic time wasted second guessing my harness and tune.That's a pretty bad fail.

[bubba68ss]

In his defense the engine and trans were a takeout from a big wrecking yard and were sold as a changeover. He just fabbed up some mounts, dropped it in and gave me the harness and ECM. Don't know why the wrecking yard pulled the filter and pickup tube out.