RE: '99 blazer - shifting issues
i cleaned the MAF sensor and connector and cleared the codes. the "shift/timing solenoid" code returns within about a minute of the engine idling in park. we took it for a 4 or 5 mile drive and a "manufacturer controlled transmission" code returned. i didn't catch which code it was, but i'm going to guess it's for the TPF valve because i seem to remember the scanner naming the TCC codes. those were the only two codes that returned, but i didn't get to drive it much.
unfortunately cleaning the MAF sensor didn't fix the problem. the engine seems to run fine, but the truck is very slow to accelerate (kind of feels like the transmission is slipping), it never shifted into OD while i was driving at 50-60mph, and it wouldn't kick down when it was supposed to. the upshifting is not harsh.
the truck does have some electrical issues. they told me that the brake and reverse lights don't work right, the hazard relay always clicks (might be the switch), and the digital gear indicator doesn't show which gear the transmission is in. we didn't check the grounds because it's too damn cold.
¬*¬*'89 acclaim - 2.5 turbo, a520
¬*¬*'88 lancer shelby - 2.2 turbo II, a555
¬* '97 blazer ls - 4.3 vortec, 4l60e, 4wd
¬* '87 lebaron gts - 2.2 turbo, a413
¬* '87 lebaron gts - '85 2.2 turbo, a413
¬* '88 s10 blazer - 2.8, 5-speed