barczy01 Posted April 25, 2019 Report Share Posted April 25, 2019 3/4 hose correct BodybyFisher 1 Quote Link to comment Share on other sites More sharing options...
bschelle Posted April 26, 2019 Author Report Share Posted April 26, 2019 Thanks! Quote Link to comment Share on other sites More sharing options...
sonjaab Posted April 27, 2019 Report Share Posted April 27, 2019 Is there a GM part # for that connector hose? Cant find it in my FSM. Quote 93 DeVille-13 Chevy Impala 72 GTO - 77 Triumph Bonneville 84 Z-28 Syracuse NY Link to comment Share on other sites More sharing options...
bschelle Posted April 27, 2019 Author Report Share Posted April 27, 2019 No number. I bought some high temp silicone hose with a 3/4 ID. Quote Link to comment Share on other sites More sharing options...
BodybyFisher Posted April 27, 2019 Report Share Posted April 27, 2019 I searched rockauto and don't see and hoses specific to this. Bschelle has the right idea. Quote 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...
bschelle Posted April 28, 2019 Author Report Share Posted April 28, 2019 It is the hose! I dropped the AC compressor and when I pressurized the system I could see the hose leaking. How do I drain the radiator? The FSM says there is a petcock on the right bottom of the tank. No there isn't. There is a nylon plug on the right tank but it is half way up the tank. No way will it drain all of the coolant. I do not see how it even works as a drain. What am I missing? I am trying to avoid cutting the lower hose if possible. Quote Link to comment Share on other sites More sharing options...
BodybyFisher Posted April 28, 2019 Report Share Posted April 28, 2019 There is a petcock on the lower left of the radiator. I believe it screws inward. The guru used to say, cut a broom handle down to about 6 inches, cut a groove into it and use it as a tool to turn the petcock. That is good news! Use a silicone hose only Quote 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...
bschelle Posted April 28, 2019 Author Report Share Posted April 28, 2019 Thanks! I will get back to it tomorrow. I do have the silicone hose. Quote Link to comment Share on other sites More sharing options...
rockfangd Posted April 28, 2019 Report Share Posted April 28, 2019 If you cannot find or get to the petcock just take the lower radiator hose off at the radiator. Might be more messy but less likely to break on removal If that radiator has been replaced it may be aftermarket. And not all aftermarket ones have petcocks Quote GM FAN FOREVER Nice, clean, luxury= fine automobile Link to comment Share on other sites More sharing options...
bschelle Posted April 29, 2019 Author Report Share Posted April 29, 2019 That is what I plan on doing. I do not want to mess with the radiator. Quote Link to comment Share on other sites More sharing options...
bschelle Posted April 29, 2019 Author Report Share Posted April 29, 2019 Is this the drain plug? I twisted it but nothing happened. Does it pull out or what? Quote Link to comment Share on other sites More sharing options...
BodybyFisher Posted April 29, 2019 Report Share Posted April 29, 2019 I just looked at the 91 FSM and saw this. I may have been confusing my NS and 4.9 platforms. I assume they mean right tank from the perspective of the driver. Hope this helps Quote 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...
rockfangd Posted May 2, 2019 Report Share Posted May 2, 2019 yes it is. Turn it a quarter turn and I believe it pulls out. I like the hose idea better though Quote GM FAN FOREVER Nice, clean, luxury= fine automobile Link to comment Share on other sites More sharing options...
bschelle Posted May 2, 2019 Author Report Share Posted May 2, 2019 I am going to do the hose. Don't want to mess with the radiator. Quote Link to comment Share on other sites More sharing options...
sonjaab Posted May 11, 2019 Report Share Posted May 11, 2019 Did you finish this repair yet? Quote 93 DeVille-13 Chevy Impala 72 GTO - 77 Triumph Bonneville 84 Z-28 Syracuse NY Link to comment Share on other sites More sharing options...
BodybyFisher Posted May 11, 2019 Report Share Posted May 11, 2019 31 minutes ago, sonjaab said: Did you finish this repair yet? I was sitting here thinking the same thing!😀 Quote 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...
barczy01 Posted May 12, 2019 Report Share Posted May 12, 2019 That isn't a GM radiator.. loosen the drain plug and pull it in and out to see if its plugged. Quote Link to comment Share on other sites More sharing options...
bschelle Posted May 12, 2019 Author Report Share Posted May 12, 2019 I will be doing the deed this week. I am still going to cut the hose. I do not want to take a chance of messing up the radiator. Quote Link to comment Share on other sites More sharing options...
sonjaab Posted May 21, 2019 Report Share Posted May 21, 2019 Did you finish this repair yet? Quote 93 DeVille-13 Chevy Impala 72 GTO - 77 Triumph Bonneville 84 Z-28 Syracuse NY Link to comment Share on other sites More sharing options...
bschelle Posted May 22, 2019 Author Report Share Posted May 22, 2019 It is fixed. I dropped the a/c compressor to make it easier to get to the hose. I used 3/4 silicone heater hose. I also replaced the lower hose. I cut it to drain the system so I didn't have to mess with the radiator. I have not had the a/c working and I installed the compressor without the hoses just to avoid trying to find a belt to work bypassing the a/c. It is now just dead heading to keep the stock belt. BodybyFisher 1 Quote Link to comment Share on other sites More sharing options...
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