Been a while since time and weather came together for me:
-finally installed my PCM4 tune!! Been like 6 or 7 months waiting in the wings. Security relearn required, went flawlessly, and no issues with door mode actuators. I used a memory saver - oddly radio station presets and seat/mirror memory settings were preserved, but ONLY the minutes of the clock got saved - hours were off by three?!?! Weird! Oh and I guess the OLM got lost/reset/changed - was at 30% prior to PCM changeout, now showing 74%?? Not a big deal though, I know when the change is due.
I did find a weird little ridged oval silicone seal just below the PCM when I took it off, same material as the PCM connector seals, but no obvious place where it may have come from. And from the imrprint in the dust where it was sitting, it has been there a while - It didn't just fall there today when I did the PCM:
View attachment 27313
View attachment 27315
Anyone recognize it or know where it belongs?
-cleaned the throttle body - easy 15 minute job, wasn't too bad with ~25000 km since last clean
-finally installed my new AGM battery bought like 3 months ago
-engine bay degrease and hose down
-drain and refill power steering fluid reservoir, added Seafoam (prep for changing that whiny b%&ch)
-drain and refill master cylinder reservoir with synthetic DOT3
-silicone lube rubber seals
-Invisible Glass inside and out on every piece...I can SEE again!!
-cleaned all the water out of my backup housings, cleaned the rusty crusty sockets as best I could and installed new bulbs - I can see BACKWARDS again!!
-Meguiar leather conditioned all leather
-interior vacuum, wash weathertech mats
-full wash and wax exterior...and then went for a 90 minute drive to dry out engine bay, blow off exterior water drops and test hwy mileage with new PCM - DIC indicated 12.1L/100km (19.2 mpg) and still trending downward (though pretty slowly by that point). ACTUAL fuel economy calculated by fill method was 13.67 L/100km (17.2mpg). The road trip was done specifically to assess consumption, so I maintained same speed for 3 directions out of town, returning the opposite way each time to average out any hills and tailwinds etc. It'll be a while before I can report a true overall result for comparison with my previous info, but it definitely looks like it improved.
-finally realized my thermocouple probe was long enough to measure the actual tranny fluid temp in the pan at the time of checking the level - per my long previous thread this had been a MAJOR pain getting consistent results. After an hour and half driving highway speeds, I stopped where it was level, ran it through the gears, and then pulled the dipstick and dropped in the TC - it showed 57°C / 135°F - GM Service Info recommends doing the hot level check at temps of 82-93°C (180-200°F). So, I still don't know - looks to me like the external cooler is really helping keep the tranny cool
thumbsup:
), and at todays measured temp the dipstick showed exactly full in 3 consecutive tries...it just leaves me confused as to how it could indicate overfilled during the cold winter temps if expansion due to heat is as much of a factor as I thought. Anyone know where the tranny temp sensor that feeds the PCM is actually located? IS the pan temp a close enough approximation?
On deck: check out why my running boards rattle in the wind sometimes on the highway.
Cheers
Am I the only one worried about someone breaking-in because the bolts are so easily removable now? 
this will buff out right? I know I will need a new front bumper cover......damn gotta do a insurance claim 
. And Broken Arrow is right next to Tulsa. I believe from Broken Arrow to Lawton is like a 3 hr drive.
