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bubba2 · 04-22-2005, 04:33 PM

Your dtc-42 was probably set when you disconnected the tan/black wire to set your timing. It generally takes 50 re-starts to clear stored DTC's--or remove the battery cable for about 30 sec.
I beleive the 4L80E has two speed sensors versus one for the 4L60E. Both trans have one on the tail shaft or transfer case, but the 4L80E also has one some place on the torque converter housing.
If you look at the ALDL, there will be a connector in pin-E if 160 BAUD, or one in pin-M if 8192 BAUD.
The classic symptom of a vacuum leak at the base of the "TBI" is highe idle.

04-22-2005, 04:33 PM	#13
bubba2 Registered User Join Date: Jan 2005 Location: Santa Barbara, CA Posts: 69	Your dtc-42 was probably set when you disconnected the tan/black wire to set your timing. It generally takes 50 re-starts to clear stored DTC's--or remove the battery cable for about 30 sec. I beleive the 4L80E has two speed sensors versus one for the 4L60E. Both trans have one on the tail shaft or transfer case, but the 4L80E also has one some place on the torque converter housing. If you look at the ALDL, there will be a connector in pin-E if 160 BAUD, or one in pin-M if 8192 BAUD. The classic symptom of a vacuum leak at the base of the "TBI" is highe idle.