Good source for info on DTC OBD1
http://www.troublecodes.net/GM/
Getting 34
MAP sensor(voltage low)
MAF sensor
I found the oil pressure sending unit, but can't reach it (6'2, 250).
Last edited by unplugged; 10-22-2009 at 07:20 AM. Reason: add title
I have the same problm, exactly.![]()
check your egr valve that could be worng some time that give that code
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