To any body else that owns one of these
and any other 94-95 car or trck model with PCM OBD1.5 located under glovebox/kick panel, true OBD2
PCM's are located in engine compartment.
They also have a knock sensor mounted atop of it.
along with a MAF and a extra heated O2 sensor at
back of the CAT/Convt.
OBD1, OBD1.5 have a removeable PROM - OBD2 has
a EEPROM and is not removeable.
OBD1 was flashed with 160 baud/8192baud(J2234)
OBD1.5 with 160/8192 w/UART(J1849vpw)
OBD2 with 160/8198 w/UART-CAN H+/L-(J1850vpw)
OBD1 12 pin / A=Blk.W/Wht. Wire(ECM signal grd.)
D=Wht. Wire (UART) ABS
E=Tan w/Blk. Wire (8192)
M=Orange wire (12vdc)
Jump A+B get code flashout, clear codes by unhooking Neg. Post on battery.
OBD1.5 16 pin / pin4=Chasiss Grd.(Blk. Wire)
pin5=PCM Signal Grd.(Blk.W/Wht. Wire
pin9=8192 (Tan w/Blk. Wire)
Jump 5+6 get code flashout, to clear out codes a scan
ner w/ OBD1/OBD2 protocals is needed with a GM
Specific (16 pin connector-Blue plug-in) or go to junk
yard and get a 12 pin ALDL and wire it like so.
( A to pin5, B to pin6, E to pin9, M to pin16)
Use the OBD1 connector on the 12 pin ALDL.
have the same problem?
Friday, September 25th, 2009 AT 7:07 PM