I changed the oil and noticed oil on the sway bar and the crossmember under the pan. That said, it could also be a leak from your torque converter. Decided to trade truck in because of upcoming repair costs. Open the hood and locate the transmission cooler. If you clean out the bellhousing and there is no fluid in it, I would lean towards a pan gasket. The principle here is that you're using accelerant to spot leaks in the system, because the leak will let the carb cleaner seep through and affect the running engine's idle.
Consumers can take the original gm line to a hydraulic shop, have the rubber portion of the lines replaced with standard hydraulic hose suitable for atf fluid and there are no further failures. Because dealer employs idiots, transmission still leaks as it did before. In Chevrolet's desire for more performance and better fuel economy, Chevrolet has been developing innovative transmissions on a regular basis. Part number gm 20759971, gm 20759973, gm20759972. Rebuilt transmission 4L60E and new torque converter stock stall speed ordered. Spray inside of yolk with brake clean and then put a gold glob of silicone on cardboard and carefully put it all the way down in the yolk and let it dry. This may help a bit.
If it's been leaking over a period of time, there will be accumulated fluid and dirt over the transmission. They could not replicate leak, had me come get truck. I cleaned it all up real nicely. I've been told this is still an on going problem all the way up to the 2010 model year. In this case, we're talking about the manifold vacuum and not the Venturi vacuum you'd see in a carburetor. The new part numbers are 20759971, 20759972, 20759973. Previous mechanic performed 50k transmission service and replaced fluid with full synthetic.
The Toyota Mind Police will be comming after you! I still don't think that is it as I can't imagine the leak was big enough to spray fluid that far forward. As you're no doubt aware, your engine requires three things to run: air, fuel, and spark. The new part numbers are 20759971, 20759972, 20759973. The first time, the dealer did nothing to repair the vehicle. The leaking lines have not been replaced. There are some videos on the internet to build smoke machines out of parts, but you're still going to need an air source of some kind.
It has most likely also leaked into the radiator. Pulled over immediately to determine cause. Complaint Number: 10245190 Incident Date: September 4, 2008 Date Added to File: October 12, 2008 Description of the Complaint: Leaking transmission cooler lines, failure at crimp between rubber line and metal line, started at 11,000 miles, replaced with new lines now leaking again at 20,000 miles. Figured I'd find out as much as I could before going to the dealer and letting them spray it with brake clean and telling me it's all fixed! Thanks again for the info. The failure mileage was 38,000 and the current mileage was 41,000. It only lasted a few seconds and went away. Sadly, we usually can't have both at the same time.
Wiped it off and it was black. Clearly a manufacturing defect, no diagnosis of cause due to elements or driver error, etc. Sorry to hear about the leaking issue. Dealer covered even though 36 months had expired. But if the smoke test is simply not happening within your budget, here's what you would do.
If you see smoke coming from anywhere on your engine, you know it came from inside. Factory transmission lines leak and must be replaced. Service bulletin to drain and refill differential. So, why do we need good vacuum? Once at the dealer they said no problem. New part ordered and installed.
This is the first time I replaced with genuine gm parts. Complaint Number: 10263723 Incident Date: March 3, 2009 Date Added to File: March 31, 2009 Description of the Complaint: Took my silverado 2500 in for some maintenance and the dealer informed me the transmission cooler lines were leaking at the fittings from the cooler lines to the cooler. It was on the yoke and the u-joint. While driving approximately 70 mph, the contact stated that the transmission oil cooler failed, causing the vehicle to loose transmission fluid. This is ridiculous that I as a consumer and everyone else have to pay for a defect that could possibly endanger my life or others in daily commuting. I just cleaned out from under mine last weekend. Once the fluid is gone the gears grind down to the point where the transmission locks up and you skid to a stop.