Re: Wiring diagrams.
My Haynes manual showed everything, including what you mention is missing, because sometimes they are on a different diagram, you know since the "second oil pressure switch" is actually for the gauge/light and not a part of the engine controls.
The TCC wiring is usually dashed in Haynes manual since it could be that or the shift light for manual trans.
Yukon: The daily driver
Tha toy: 1973 Datsun 240z 12.71 @115
Tha other Toy: 1923 T-Bucket
Another Toy: 1987 Buick Skyhawk
Typhony Old set-up: 1985 GMC Jimmy. 3.2L Turbocharged/Intercooled hybrid. 13.873 @ 99.08
Currently being reconstructed.
"If you're not living on the edge, You're taking up too much space."