| ID | Status | Date | Year | Make | Model | Transmission Type | A/C Controls | Public/Private |
|---|---|---|---|---|---|---|---|---|
| #12846 | Closed | 2002 | CHEVY | SUBURBAN 2500 4X4 | public |
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NO COMMUNICATION FROM ECM. I HAVE POWER AND 2 GROUNDS AT THE DLR PLUG. INFO LINE FROM ECM IS DEAD. I HAVE CHANGED BOTH FUSE BOXES. THAT FIXED MY HEADLIGHT PROBLEM. THE RIGHT SIDE WOULD NOT WORK. I THINK I HAVE ISSUES WITH THE BCM DUE TO MOST RIGHT SIDE OPTIONS DO NOT OPPERATE. RIGHT POWER MIRROR, RF WINDOW, RR WINDOW. WHEN TRYING TO OPPERATE RIGHT WINDOWS THE LR GOES DOWN. TO PUT IT BACK UP I HAVE TO LOCK THE WINDOWS AND USE THE LR SWITCH. ANY HELP WILL BE APPRICIATED |
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The power windows and power mirrors do not work through the BCM so you can rule that out as a possibility. The PCM can communicate through the DLC on two different terminals as shown in the attachment. There will be fluctuating low voltage present on those lines. What kind/brand of scan tool are you using to communicate with the vehicle? |
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I will check that out. I was using my buddies set up. The latest and greatest snap on and it’s linked with shop key. But it seams no one has had my issues. Any guess on the power window problem? I have 3 good used driver door complete control assemblies and all do same issue. |
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The few things that come to mind are broken/crossed wires in the driver’s door jamb harness, poor grounds or incorrect switches. I have uploaded a copy of the power window diagram. |