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Can anyone out there tell me if tracing back up the ground is talking about going from where all the connections meet and bolt into the block and then up from there ? To each module ? I did do a continuity test for all the tan wires on CKT 800 and they were all around 0.04-0.02 ohms. I am 99%...

So what you mean is each ground wire that is attached to ground E needs to be checked until you find the problem ? Is there an tips as to which ground wire could be the culprit as it seems as everything is talking except the ECM ? Also would it be any value to undo the splice pack at S222 and...

Ground E Left rear of engine (not on bell housing) Well took the time today to clean and inspect ground E which is the main grounds for the CCM/ECM/EBCM/HVAC. Took apart and wire brushed and wire wheeled all areas put everything back and got almost the same reading except for 32,000 ohms...

Got a hold of the FSM for my vette ! Got the right flow chart/diagnostics for the C41 and got down a few steps and basically it is telling me that there is a short to ground from CCM Pin E13 on the green connector of the CCM. I found what is called Ground E and that is the main grounds for the...

The AM/FM CD player is aftermarket and yes the bose system is still in the car. The Codes H72 and H64 were from the EBCM/ASR behind the drivers seat. I have a Snap on Solus Ultra and it will not communicate with the ECM ????? I did go through the Ground location chart and everything was OK ?

1992 C4 A/T 132,000 miles. I have owned the car for about 6 years and the first 4 1/2 were great no major problems. The last year and 1/2 have been down hill from there. In that time some work was done. Number 1 was a aftermarket CD player after reading not sure if a Bose Bypass harness was used...