KHE Posted October 14, 2011 Report Share Posted October 14, 2011 The power on the "Convenielce" circuit is getting interrupted. Check the fuse in the trunk fuse block to make sure it is free of corrosion, making good contact, and is fully seated. It could also be tied into the retained accessory power circuit. Kevin '93 Fleetwood Brougham '05 Deville '04 Deville 2013 Silverado Z71 Link to comment Share on other sites More sharing options...
wyhog Posted October 17, 2011 Report Share Posted October 17, 2011 The power on the "Convenielce" circuit is getting interrupted. Check the fuse in the trunk fuse block to make sure it is free of corrosion, making good contact, and is fully seated. It could also be tied into the retained accessory power circuit. Thanks ... I will sure check both those. I have tried charging my battery after stopping the car and trip meter still reset itself.....wondering if it is a module somewhere that needs replaced. My trip meter only lasts 4 to 5 minutes before resetting to zero. Link to comment Share on other sites More sharing options...
wyhog Posted October 17, 2011 Report Share Posted October 17, 2011 Which module controls the trip meter, mpg, avg speed etc..all these reset to 0 after the car sits....?? I will replace that module and see if it fixes it.....anybody know which module controls all these..?? Thanks for any help. Link to comment Share on other sites More sharing options...
wyhog Posted October 19, 2011 Report Share Posted October 19, 2011 Okay....I have eliminated the heating control module as controlling the trip meter and other avg mpg, avg mph, fuel used etc ..although the local cadillac service manager said that was the controlling module. I will check the body control module next and see if that controls the dash trip meter. Link to comment Share on other sites More sharing options...
KHE Posted October 19, 2011 Report Share Posted October 19, 2011 I think either the ECM or the PZM would control those systems. Kevin '93 Fleetwood Brougham '05 Deville '04 Deville 2013 Silverado Z71 Link to comment Share on other sites More sharing options...
wyhog Posted October 19, 2011 Report Share Posted October 19, 2011 I think either the ECM or the PZM would control those systems. The BCM Body Control Module located behind the rear seat on the left side controls the digital lights...trip meter, avg mph, avg mpg, gallons used etc...I unplugged it and turned the key on and no lights. Question now is if I buy a used one will it work or does it need to be re-programmed to work in my car??? Thanks Link to comment Share on other sites More sharing options...
wyhog Posted October 19, 2011 Report Share Posted October 19, 2011 The BCM Body Control Module located behind the rear seat on the left side controls the digital lights...trip meter, avg mph, avg mpg, gallons used etc...I unplugged it and turned the key on and no lights. Question now is if I buy a used one will it work or does it need to be re-programmed to work in my car??? Thanks Link to comment Share on other sites More sharing options...
bpage Posted October 20, 2011 Author Report Share Posted October 20, 2011 Gale, The BCM needs to be programmed. Dealers can do this, but I have been told that they are reluctant to program used BCM's. A friend of mine is a mechanic with a 97 Deville. He downloaded a program from the Internet that allows him to program the BCM. He also recommended cutting the Red insulation around the positive battery cables and making darn sure there is no corosion. I cleaned mine but I didn't go that far. He says he has seen this problem many times. One cable goes to the starter and the other powers everything else. A poor electrical connection will cause the electronics to go nuts. A poor ground will also cause problems. A common ground problem is behind the fuse panel under the hood. Good luck, Barry Link to comment Share on other sites More sharing options...
wyhog Posted October 20, 2011 Report Share Posted October 20, 2011 Sounds like I may be on the wrong track....thinking replacing the BCM will fix the problem. Corrosion or ground problem is the probable issue. Thanks for the input....I will pursue those items first before changing out the BCM. Link to comment Share on other sites More sharing options...
BodybyFisher Posted October 20, 2011 Report Share Posted October 20, 2011 Barry, we would love to know what program your friend has that will program the BCM, Thanks, Mike Pre-1995 - DTC codes OBD1 >> 1996 and newer - DTC codes OBD2 >> https://www.obd-codes.com/trouble_codes/gm/obd_codes.htm How to check for codes Caddyinfo How To Technical Archive >> http://www.caddyinfo.com/wordpress/cadillac-how-to-faq/ Cadillac History & Specifications Year by Year http://www.motorera.com/cadillac/index.htm Link to comment Share on other sites More sharing options...
wyhog Posted October 21, 2011 Report Share Posted October 21, 2011 Pulled the battery cables and cleaned them completely....even cutting the rubber back to check for corrosion. Checked the ground wires anywhere I could find them....still after sitting everything zeros out and the radio goes to 98.1.... Not giving up but any help would be appreciated from anyone who had this problem and fixed it. Thinking it may be in the memory portion of one of the modules?? Thanks... Link to comment Share on other sites More sharing options...
wyhog Posted October 24, 2011 Report Share Posted October 24, 2011 Pulled the battery cables and cleaned them completely....even cutting the rubber back to check for corrosion. Checked the ground wires anywhere I could find them....still after sitting everything zeros out and the radio goes to 98.1.... Not giving up but any help would be appreciated from anyone who had this problem and fixed it. Thinking it may be in the memory portion of one of the modules?? Thanks... Pulled this code from IPC B1552....anyone know what this means?? Thanks Link to comment Share on other sites More sharing options...
BodybyFisher Posted October 24, 2011 Report Share Posted October 24, 2011 B1552 - Keep Alive Memory (KAM) Error If you disconnected the battery to clean the connections that is the reason for this code Pre-1995 - DTC codes OBD1 >> 1996 and newer - DTC codes OBD2 >> https://www.obd-codes.com/trouble_codes/gm/obd_codes.htm How to check for codes Caddyinfo How To Technical Archive >> http://www.caddyinfo.com/wordpress/cadillac-how-to-faq/ Cadillac History & Specifications Year by Year http://www.motorera.com/cadillac/index.htm Link to comment Share on other sites More sharing options...
wyhog Posted October 25, 2011 Report Share Posted October 25, 2011 B1552 - Keep Alive Memory (KAM) Error If you disconnected the battery to clean the connections that is the reason for this code Thanks, it was disconnected....I cleared it so will see if it returns. ...and I thought I was on to something. Link to comment Share on other sites More sharing options...
BodybyFisher Posted October 25, 2011 Report Share Posted October 25, 2011 Yes, if you continue to see codes related to the battery being disconnected, it would indicate something, but the odometer is in non volitile memory isn't it? Which begs the question, if I disconnect my battery do I lose trip mileage? Pre-1995 - DTC codes OBD1 >> 1996 and newer - DTC codes OBD2 >> https://www.obd-codes.com/trouble_codes/gm/obd_codes.htm How to check for codes Caddyinfo How To Technical Archive >> http://www.caddyinfo.com/wordpress/cadillac-how-to-faq/ Cadillac History & Specifications Year by Year http://www.motorera.com/cadillac/index.htm Link to comment Share on other sites More sharing options...
wyhog Posted October 25, 2011 Report Share Posted October 25, 2011 Yes, if you continue to see codes related to the battery being disconnected, it would indicate something, but the odometer is in non volitile memory isn't it? Which begs the question, if I disconnect my battery do I lose trip mileage? The odometer doesnt reset...just the digital gauges that are resettable..trip meter, avg mph, avg mpg fuel uesd etc...all go to zero and the radio to98.1 after the car is turned off and sits for 10 to 20 minutes... Link to comment Share on other sites More sharing options...
BodybyFisher Posted October 26, 2011 Report Share Posted October 26, 2011 When I said Odometer, I meant trip odometer. I have spent an hour scanning the GM service manual, Ill pull my 96 manual and look it over, nothing so far on this, and where the TRIP is saved. Pre-1995 - DTC codes OBD1 >> 1996 and newer - DTC codes OBD2 >> https://www.obd-codes.com/trouble_codes/gm/obd_codes.htm How to check for codes Caddyinfo How To Technical Archive >> http://www.caddyinfo.com/wordpress/cadillac-how-to-faq/ Cadillac History & Specifications Year by Year http://www.motorera.com/cadillac/index.htm Link to comment Share on other sites More sharing options...
wyhog Posted October 26, 2011 Report Share Posted October 26, 2011 When I said Odometer, I meant trip odometer. I have spent an hour scanning the GM service manual, Ill pull my 96 manual and look it over, nothing so far on this, and where the TRIP is saved. I gotcha... When I disconnected the BCM on the back of the rear seat, all the digital guages went out on the dash....thought maybe it might have the memory but don't know. I really appreciate the help...great car with 47000 miles, I am the second owner. Everything else works great.... Thanks Link to comment Share on other sites More sharing options...
BodybyFisher Posted October 26, 2011 Report Share Posted October 26, 2011 When you disconnect the BCM, does it reset the trip odometer? Pre-1995 - DTC codes OBD1 >> 1996 and newer - DTC codes OBD2 >> https://www.obd-codes.com/trouble_codes/gm/obd_codes.htm How to check for codes Caddyinfo How To Technical Archive >> http://www.caddyinfo.com/wordpress/cadillac-how-to-faq/ Cadillac History & Specifications Year by Year http://www.motorera.com/cadillac/index.htm Link to comment Share on other sites More sharing options...
wyhog Posted October 26, 2011 Report Share Posted October 26, 2011 When you disconnect the BCM, does it reset the trip odometer? Not sure...it was already to zero when I unplugged the BCM.. Link to comment Share on other sites More sharing options...
BodybyFisher Posted October 26, 2011 Report Share Posted October 26, 2011 When you disconnect the BCM, does it reset the trip odometer? Not sure...it was already to zero when I unplugged the BCM.. Do me a favor, run up some mileage on the trip odometer. Park the car, and quickly before the 19 min period shuts it off, disconnect the BCM from power and see if it erases the trip mileage. That will be something good to know Pre-1995 - DTC codes OBD1 >> 1996 and newer - DTC codes OBD2 >> https://www.obd-codes.com/trouble_codes/gm/obd_codes.htm How to check for codes Caddyinfo How To Technical Archive >> http://www.caddyinfo.com/wordpress/cadillac-how-to-faq/ Cadillac History & Specifications Year by Year http://www.motorera.com/cadillac/index.htm Link to comment Share on other sites More sharing options...
wyhog Posted October 26, 2011 Report Share Posted October 26, 2011 When you disconnect the BCM, does it reset the trip odometer? Not sure...it was already to zero when I unplugged the BCM.. Do me a favor, run up some mileage on the trip odometer. Park the car, and quickly before the 19 min period shuts it off, disconnect the BCM from power and see if it erases the trip mileage. That will be something good to know I will do that and let you know... Link to comment Share on other sites More sharing options...
BodybyFisher Posted October 26, 2011 Report Share Posted October 26, 2011 Are you 100% sure that the reset takes place at the same time, EXACTLY 19 minutes? or does it vary? Pre-1995 - DTC codes OBD1 >> 1996 and newer - DTC codes OBD2 >> https://www.obd-codes.com/trouble_codes/gm/obd_codes.htm How to check for codes Caddyinfo How To Technical Archive >> http://www.caddyinfo.com/wordpress/cadillac-how-to-faq/ Cadillac History & Specifications Year by Year http://www.motorera.com/cadillac/index.htm Link to comment Share on other sites More sharing options...
wyhog Posted October 27, 2011 Report Share Posted October 27, 2011 Are you 100% sure that the reset takes place at the same time, EXACTLY 19 minutes? or does it vary? Not sure they reset at exactly 19 minutes or if it varies...I have never kept trying it to see the exact length....just approx. Link to comment Share on other sites More sharing options...
bpage Posted October 27, 2011 Author Report Share Posted October 27, 2011 Glad to see that you guys are still hot on the trail of this problem. My trip info resets at between 19 and 20 minutes. I am still experiencing the problem with the RKE turning the radio on then off before it opens the doors, as described in earlier posts. This problem has become more intermittent now that the weather is colder. Sometimes it only takes one click and the radio cycles. Sometimes the doors unlock on one click and the radio does not cycle on and off. I suspect the problem is related to outside temperature. I am not sure if this problem and the reset problem have a common cause. Now that the symptoms of one problem have changed I will time the reset problem again and see if it is still 19 to 20 minutes. What does the RKE the radio and the trip info have in common? Sounds like a tribond trivia question. I appreciate your tenacity on this problem. Wish I could be more help. Link to comment Share on other sites More sharing options...
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