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post #1 of 5 (permalink) Old 03-04-2012, 07:43 AM Thread Starter
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ECM Connector Backshell Broke

I've got a 2007 Cobalt LS that was hit in the front end on the drivers side. The fender, grill and hood were replaced. A couple of the connectors on the ECM were also damaged but not replaced. The back shells are broken. Does anyone know if the back shells can be replaced without replacing the entire connector?
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post #2 of 5 (permalink) Old 03-04-2012, 08:15 AM
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Yes, the back shells and levers can both be replaced if the main connector haven't been damaged from the impact. But you will have to remove the connectors from the ECM to do this, so disconnect battery first. Get some from a junkyard they just snap in with a little persuasion.

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post #3 of 5 (permalink) Old 03-04-2012, 11:40 AM Thread Starter
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Thanks for the info. I'll inspect the connector to make sure it isn't damaged, then I'm off to the junkyard!
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post #4 of 5 (permalink) Old 03-04-2012, 12:04 PM
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Be carefull on "the how too" when you take them apart and it will make it easier for you when you need to put it back together. Just two little plastic latches that need to be springed a little to dismantle cover.

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post #5 of 5 (permalink) Old 03-05-2012, 07:26 PM Thread Starter
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This is a long post but I wanted to give as much information about the problems I've been having in hopes that someone can help me. The top ECM connector has one side of the latch that is broken but it does latch on tight so I think it is ok for now. It appears to seat flat and completely down. I've been fighting a problem with the dash gauges intermittently going off and on, intermittent power steering message displayed, occasionally the power steering actually not working, transmission shifting hard and the check engine light on. It has been setting P0700 and U0073 codes. After clearing the codes everything usually returns to normal operation for a day or so then all starts again with the same codes being set. I had the power steering motor replaced about 10K miles ago and about that same time I began having the intermittent problems. Not long after the problems started I thought I had it fixed by re-seating all the fuses in the fuse block under the hood but that only lasted about 6 months before problems returned. Over the last week I have removed all the ECM/TCM/BCM/fuse block connectors and used electronic spray cleaner to clean all the contacts. I applied dielectric grease to all contacts and reconnected them. Now I'm not having the intermittent problem with the gauges and power steering but the check engine light comes on within a few miles after being reset. It's always P0700 and the engine power is reduced some. I can clear the code and it set's again within a few miles. So now the questions. What should I do next? Does the P0700 code usually indicate the TCM is bad?

Thanks for any help/advice offered. This is getting really OLD!!!!
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