Hiya folks,
I drive a 2000 Escalade (5.7L Vortec) which I believe is a platform that's pretty close to the 1999 Yukon Denali, so I'm not sure if I'm in the right place or not, so please feel free to yell at me.
My vehicle will not perform a CKP/CASE relearn. I'm attempting to do this because my vehicle's timing has been a little on the weird side, and I have a friend who's a GM master technician who suggested that On my LAUNCH scanner, the thing "waits for data" and then eventually states that "Condition not met." I understand that some folks have had issues with things like the parking brake, or the car thinking it's in gear when it isn't, but here's what I've done thus far:
1) Replaced ground straps to firewall
2) Replaced ground straps to engine block
3) Beefed up the ground to the frame direct from the battery.
I've also performed a bunch of service on the vehicle - distributor is new, fuel and air filters, idle air controller, checked for vacuum leaks, re-timed it, new plugs and wires. The only thing "funny" I'm seeing is that when I rev the engine in Park/Neutral I will eventually see speed on the speedometer. It's my theory that the LAUNCH scanner is detecting speed on the vehicle and aborting the CKP relearn accordingly. Assuming I don't get any info from here/just yelled at for posting in the wrong place because I'm a doofus, I was just going to replace the VSS, but am concerned that the issue isn't with the speed sensor itself, but rather with the wiring and/or shielding.
Apologies. I've never worked on my own truck before, and this whole thing has been an adventure. And I'm almost there; the P0300 is gone, vacuum leaks seem to be sealed, fuel trims are okay-ish for a 23-year-old vehicle. And it went from plugs and wires to all sorts of other things because, as I've come to learn: P0300 Simply Means Your Car Sucks And No More Information For You, Sir. And that's gone. No codes of any kind.
Any experiences similar to mine? Should I just leave it alone, even though my CMP ****** is like 9 degrees even with the distrib cap twisted as far as it'll go? Only issue I have with it is the idle's a touch rough, but it worries me that the thing won't perform a relearn.
Thanks in advance and/or I live in California so please make sure any tomatoes you throw at me are organic.