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The Pressure spring and Boost valve upgrade was very easy; well... keeping the regulator valve up in the pump stator was a bit frustrating, but all in all; very easy. I removed the manual shift...

Hope you and family had a wonderful Easter Robert. The 4L60E and Transgo HD2 systems relationship & operational explanation you provided (below) was perfect; clear & concise.
I took your...

No Robert, just heeded the note: on page 5: "If Trans is on Bench, remove Pump and install Step 1 PR parts." My speed sensor is on the transfer case; 4X4. Also watched a UTV showing an "in-Vehicle"...

Got the HD2 kit installed; all sans boost valve and clutch springs; 4L60e not removed to facilitate the complete install. Second accumulator was a pin / aluminum piston kit upgrade. The remaining...

The HD2 kit arrived late yesterday. Bought some new check balls too; those rubberized milk dud looking ones.
Thanx again for the education.

Pneudraulics - Fuels & Hydraulics. Military origin perhaps. Been a term of my vocabulary since July 1981; USAF Tech School.

Ok Robert, here's the anomaly: On the current 4L60E-HD2 instructions...

Thanx Robert. Completely agree; having tested, measured cylinder travel differences, the pinless pistons (by any manufacturer) do not travel the same distances as the OEM counterparts. Travel in the...

Having installed a handful of B&M valve body shift kits since the mid 70's, and figuring it's going to take more than a "key punch" activity to get my 4L60E to shift when I want it to... I've looked...

Appreciate it Robert.
National Wheel & Tire's website has a basic drivetrain chart that covers tire circumferences ranging from 17.5" to 54."
Never knew such a chart existed. it has a 38" tire...

I'm not the greatest mathematician.
If a 4L60E VSS gets triggered 40 times per driveline rotation, and a 37.7" tire travels 118.378 inches per rotation, and the tire gets rotated 4.56 times per...

Attached the ,HPT file in work.

NOTE: My vehicle speed is monitored by a stand-alone GPS speedometer; not a PCM controlled indicator. That stated...

When entering my actual tire size & gear ratio (37.7" / 4.56:1) in the...

NOTE: My vehicle speed is monitored by a stand-alone GPS speedometer; not a PCM controlled indicator. That stated...

When entering my actual tire size & gear ratio (37.7" / 4.56:1) in the...

I appreciate the help. Reading about EFI function is one thing. Seeing it in action with this VCM suite; it's truly amazing. Thanks.

Is it normal for both OEM front HO2 sensor readings to fluctuate randomly (104-786) at idle, on initial cold start-up; rear HO2's are disabled. The OEM 5.3L L33 VIN B engine appears to be running...

Man... I missed that one. It makes perfect sense. Thanks.

Screen Shot

In the GM VCM Editor Standard View, on the Engine Diagnostics [General] tab, and after selecting the Firing Order button, is there a problem indicated when each of the displayed Cylinder cells have...

Thanks Bill. This package is so easy to learn and utilize. Even better to have it in two locations at home. It's the Encyclopedia Britannica of PCM access; right at your fingertips ; ).

Can I install my VCM Suite software on my Desktop PC and my Netbook PC? I loaded it to my netbook for garage portability, but would like to be able to view and edit files from my 22" monitor and...