2000 GMC JIMMY SERVICE ENGINE SOON.
GM Computer codes P1860
Repairs = REPLACED INTERNAL TRANS WIRING HARNESS WITH TCC
SOLENOID,PWM SOLENOID,1-2,2-3 SOLENOIDS AND STILL HAVE SAME
CODE
.

Question = WAS WONDERING IF THERE IS ANY OTHER CHECKS THAT CAN
BE DONE. WENT THROUGH THE DIAGNOSTIC CHECK GIVEN BY MITCHELL'S
AND EVERYTHING IS CHECKING OUT O.K.  THE ONLY THING I SEE WEIRD IS
WHEN USING THE SCANNER AND LOOKING AT TRANS DATA THE 2-3
SOLENOID DISPLAY SAY OPEN/SHORT AND THIS GOES FROM YES TO NO
RANDOMLY AND NO OTHERS DO THIS. WHICH LEAD ME TO BELIEVE THIS
SOLENOID WAS BAD, SO I REPLACED IT ALSO AND HAD SAME PROBLEM
AND SAME DISPLAY ON SCANNER.


SF:
Can you verify that you have battery voltage at the pink wire of the trans
connector. Have you checked continuity of brown wire from trans connector to
PCM?Does the trans shift normally?
GMC Jimmy Transmission Codes
2001 Chevy S-10.  2.2 Ecotec.
Warning lights = security
Question: suspected passlock problem. Fuel pump fuse blow when trying to reset passlock .
This occurs when turning key to on position. Any suggestions?
Answer: Usually the security 'passlock' system would not cause the
fuel pump fuse to blow, even if faulty. You may be looking at two
different problems, if in fact you do have a passlock issue. If the
security light is on constantly, you probably have set a trouble code
for the theft deterrent system on your vehicle. It would help to retrieve
that code to aid in diagnosis. If the passlock sensor needs replaced, it
is part of the ignition cylinder housing in the steering column. The
column has to be disassembled and the housing replaced, then the
security system can be relearned properly. With the fuel pump fuse
popping, you could have a wiring issue. A short or faulty wire can
cause this, or even the ignition switch itself. You'd have to start
disconnecting components, or trace the wiring to find your trouble. It is
possible as well, that the fuel pump itself is shorted out and causing
the fuse the blow.