(over the course of the last few days, not just 'today'... )
Rented a coolant pressure tester and found the leak with the Envoy's system. Turned out to be nothing more than a loose hose clamp. On the top hose to the WP, no less. I had taken apart the washer fluid canister to get to the coolant recovery tank, as I know that's a fairly (?) common issue with the thing cracking at the seams. Not the case with mine, yet, anyway.
Putting everything back together, I couldn't remember how the bracket that holds in the A/C receiver / drier connected back up. So I jerry-rigged it until I can find some pics of it.
Since I had replaced all of the OEM clamps with worm gear type, perhaps this will reopen the debate on the 'best' clamps to use on coolant hoses?
I know people like to rag on the factory 'squeeze' clamps, but at least I never had to worry about them leaking.
For such a slight leak (the gage never rose above 'normal'), I wound up putting 2/3 of a gallon of coolant back in. Monitoring over the next few days.
Still playing with the Sierra's tune, and the hard starting issue. After backing out almost all of the timing & airflow changes I'd made, I finally flashed the factory tune back in, and tested - it *still* cranks excessively on the first turn of the key. Going to wait until I get the intake / injector / FP regulator / E85 component swap done, before tackling it further (thinking that maybe the swapped FPR will rectify. For now, it can wait.)
Put gas in the Sierra, ahead of our big snow tonight / tomorrow. Noted the gauge is still sluggish (10min to update). Contacted the vendor; they're sending out a replacement pump. The nice thing is, I don't have to send the old one back.
Which is good, because right now, I'm busy with the Accord (new brakes, all around, along with fixing the airbag light).
Sitting down with some 20yr tawny, waiting for the first flakes to fly (they're about 4hrs late, at this point). Forecast is calling for about a foot, which would be our biggest snowstorm in several years.
Gonna be lots of blowing / drifting, so the 'real' total out here will prolly be close to 18".