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Automotive Repair Car Troubleshooting Topics   Car Troubleshooting   Engine Troubleshooting   Engine Fault Codes   Electrical and Wiring   Transmission Problems Car Repair Topics   Car Making Noises   Car Stereo Repair   Heating or AC Issues   Motorcycles and ATVs   Tricks of the Trade   Truck Repair Advice Site Options:      Login   Sign up here! Latest Forum Post   2011 Dodge Nitro OBD scanner seems to drain battery in 10-20 minutes When I bought this car in summer 2023, a... Grounding Cable, 2017 Jeep Renegade Trailhawk The Cable that connects my negative batt... Rough Idle (Found new thing) Hi everyone. First of all sorry for bad ...     equipment hey yall. im a first year engineering st...   HELP I have a 1956 1/2 ton panel truck, 69 35...   Howdy     Just wanted to s...   ABS/Tractiob/Brake Lights on But No DTCs Hello all, Recently while driving m...   Chevy strut replacement I'm trying to get a sensor of some kind ...   2020 suburban new transmission and issues after install recently had the transmission fail at 11...   Caliper piston post cleaning won't screw in Hello, 2013 Hyundai Elantra limited (ma...

Search Auto Parts Search 1989 GMC Sierra 1500 Leaking Coolant Behind Engine Sign up here!   Email This Post Auto Repair Home>> Automotive Repair>> Car Troubleshooting K_Flash New User Jun 27, 2020, 6:18 PM Post #1 of 3 (862 views) 1989 GMC Sierra 1500 Leaking Coolant Behind Engine Sign In I have a 1989 GMC Sierra 1500. I have coolant dripping out of a small hole, between the oil pan and transmission cover. I think this is the torque converter cover. would you please help me figure out where this leak may be coming from. Thank you oil pan to the left. transmission cover to the right off screen blocked by the exhaust pipe.the drip is a small hole. It may be a vent hole on the torque converter, but I am not sure (This post was edited by Hammer Time on Jun 28, 2020, 3:50 AM) Tom Greenleaf Ultimate Carjunky / Moderator Jun 27, 2020, 9:05 PM Post #2 of 3 (848 views) Re: 1989 GMC Sierra 1500 Leaking Coolant Behind Engine Sign In Please try to reduce size of that pic it overwhelms the view of the page and all subsequent posts. For now on leaks like that sure doesn't seem like oil or other does look like coolant so look up higher than that with mirror at any engine type this would have (state which may help too sport) could be intake, a freeze or AKA (core plug) in rear of a head or gasket higher than all of it. Also if nothing put system under pressure with a pressure tester then if need be remove the cover look again if any view up. Don't forget all hoses that are higher or go over or near top of engine including heater hoses, at clamps. One real sneaky type of leak is a pinhole in a coolant hose that can spray a fine line like a thin fishing line maybe only found by hand or paper blocking it and getting wet while under pressure. Don't exceed the 15lb rating of the pressure cap plus do not start engine with typical pressure tester on it ones I know do NOT stop pressure from rising due to engine warming up can blow out weakest link usually the water pump you don't need to add a problem, Happy hunting you can find that, Tom Hammer Time Ultimate Carjunky / Moderator Jun 28, 2020, 3:53 AM Post #3 of 3 (832 views) Re: 1989 GMC Sierra 1500 Leaking Coolant Behind Engine Sign In I deleted that picture for the time being as it is way too large. This leak is more likely coming from above and running down the back of the engine. As Tom suggested, you need to pressure test the system and examine the top very carefully. There are a couple of freeze plugs in the bell housing area but it is far more likely to be coming from above that. ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.   Email This Post   Automotive Repair     Auto Body Repair and Refinishing     Heating or AC Issues     Electrical and Wiring     Brake Systems     Car Stereo Repair Advice     General Discussions     Car Making Funny Noises     Engine Fault Codes     Engine Troubles     Exhaust Systems     Steering and Suspension     Transmission Troubles     Tricks of the Trade Automotive World     General Discussions     Antique Car Talk     Car Shows and Events     The Bargin Bin     Motor Vehicle Inspection     Car Care Tips     Traffic Tickets     Gasoline, Motor Oils, Concept Cars and Engines     Auto Insurance, Financing, Leases, Warranties Truck Repair     General Discussions     Truck Engine Repair     Truck Suspension Repair Motorcycle Repair     General Discussions     Motorcycle Engine Repair CarJunky     Open Posting     Board FAQ's     New Board Suggestions

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