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Trans dropping to idle in 3,2,1. Works in D

So i’ve had my 4l60E on my 96’ rcsb completely rebuilt by a reputable trans shop. Noticed a sloppy shift from 1-2 after a month of driving. The sloppyness progressed and becomes more noticeable at higher rpms. Then the other day as i was rolling down a steep grade on the freeway, I put the...
- AlohaOBS
- Thread
- Aug 19, 2021
- Replies: 1
- Forum: Transmissions
BlackBear tune issue, Truck is short shifting

Im officially stumped. I’ve had the BB tune since 2018 and opted to raise my WOT shift points to 5500 rpm. Recently the truck has been acting like its back to the factory shift mapping. Under WOT, its shifting at 4900 RPM, not 5500. Sometimes unplugging the PCM for a few minutes will fix the...
- AlohaOBS
- Thread
- May 16, 2020
- Replies: 24
- Forum: 96+ Vortec Performance + Computer Swaps
Post your acceleration video’s!!

Does anybody else on here have video’s of their trucks accelerating? Heres my RCSB vortec 5.0L going 0-80. It’s pretty slow but gets the job done. Second video is of me pegging the escalade cluster.
- AlohaOBS
- Thread
- Oct 28, 2019
- Replies: 6
- Forum: Car / Truck Photos and Videos
Pushbutton 4WD Intermittent Failure

I’ve been having issues with my 4WD buttons. Vehicle is a non- autotrac 1996 RCSB with the 5.0/Auto. The orange led’s on the pushbutton selector for the 4x4 randomly stop displaying what mode the Transfer case is in. However the backlight still works for the buttons reguardless of whether or not...
- AlohaOBS
- Thread
- Feb 9, 2019
- Replies: 12
- Forum: Transfer Cases