Well I did it
08-07-2020, 12:29 PM
#22
TECH Junkie
Join Date: Jun 2014
Location: At the dump with a clutch
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A harness that plugs into a wall outlet, the ECU and the MPVI. I had a voltage issue on my Tahoe caused by an aftermarket chime adapter (I think) and it caused the tune writes to continually fail leaving the truck dead. I ended up buying a bench harness, re-flashing the ecu and saving it. While I waited for the bench harness to come in I used a different ecu and was still able to drive the truck.
Likely you won't ever need it but it saved my butt and they are cheap.
Likely you won't ever need it but it saved my butt and they are cheap.
08-07-2020, 02:02 PM
#23
TECH Fanatic
Got a link??
08-07-2020, 02:10 PM
#24
TECH Junkie
Join Date: Jun 2014
Location: At the dump with a clutch
Posts: 3,124
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This is the one I bought.
https://www.ebay.com/itm/For-GM-Chev...53.m2749.l2649
Or you can make your own
https://sites.google.com/site/sloppy...-bench-harness
*Edit* I don't know much about the new trucks you may need one with a different style ECU connector.
https://www.ebay.com/itm/For-GM-Chev...53.m2749.l2649
Or you can make your own
https://sites.google.com/site/sloppy...-bench-harness
*Edit* I don't know much about the new trucks you may need one with a different style ECU connector.
The following users liked this post:
RedXray (08-07-2020)
08-07-2020, 03:39 PM
#25
A harness that plugs into a wall outlet, the ECU and the MPVI. I had a voltage issue on my Tahoe caused by an aftermarket chime adapter (I think) and it caused the tune writes to continually fail leaving the truck dead. I ended up buying a bench harness, re-flashing the ecu and saving it. While I waited for the bench harness to come in I used a different ecu and was still able to drive the truck.
Likely you won't ever need it but it saved my butt and they are cheap.
Likely you won't ever need it but it saved my butt and they are cheap.
I've had radio interface adapters (adapter boxes made for doing aftermarket stereos on late model vehicles) shut down CAN networks and cause no starts and all kinds of goofy issues. Gotta watch those little adapters.
08-07-2020, 08:08 PM
#28
100% Redneck
I'm probably the only person on earth that's had HP Tuners give back lost credits from fkn up. Bill@HPTuners gave me some misinformation and I lost two credits. I had the bank stop the $100 payment. HP Tuners e-mailed me saying they were going to disable my device. I pleaded my case showing them the forum post with the info Bill gave me. They gave me back 4 credits when I had only lost 2... I was a happy camper lol
08-07-2020, 09:28 PM
#29
TECH Fanatic
Thread Starter
Looking back I see where I messed up. Oh well. Got the new tune loaded and tomorrow I’ll do some logging. Been having a miss lately at part throttle that I’m hoping was just the diablo tune.
08-08-2020, 12:20 PM
#30
TECH Fanatic
Thread Starter
Assuming I loaded the file right, this thing drives a 180* different than the diablo. The intake is no longer overbearing loud, the throttle is more linear, transmission shifts like what I think it should. Did my first log and getting ready to send that off.
The following users liked this post:
00pooterSS (08-10-2020)