Redone
Syracuse NY
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I have a 6.0 gas engine with GM heavy duty transmission in my 2006 Savana van. The van has 41K miles and has been running fine. I took it into the dealer for warranty replacement of a front hub bearing and they performed a general service at the same time. A week later I was running the kids around and stopped for gas. On pulling out of the gas station, the van felt like the brake was on as I needed to use more revs than usual to get the van moving. I immediately had to make a turn and the transmission then jerked. I thought it may just have been low on fluid, so I pulled over to check. On opening the hood, I found the transmission dipstick out of its tube and fluid dripping everywhere. The van was towed back to the dealer.
The dealer determined that the hose leading to the transmission cooler (after market cooler fitted by dealer) had split. They replaced the hose, refilled the fluid, tested the vehicle and told me there was no damage to the transmission. Well, one day after picking up the van, it did the same thing. The dipstick was again not seated in the tube, fluid was everywhere and there was a strong smell of hot fluid. I was not able to determine if the new hoses to the cooler were still intact.
I suspect the initial hose failure was not a fault in the hose but caused by excessive pressure in the transmission. The van has now been towed back to the dealer and I am awaiting their diagnosis. The van is used to pull our TT but has not towed anything since Labor day (approx 7K miles ago). The transmission fluid has been changed annually and was last replaced in July 08. Any one have any ideas that I should know about before I hear back from the dealer?
Thanks in advance for your help, Red.
2006 Max Lite ML29BHS
2006 GMC Savana 3500 6.0L
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Beaker
Brevard, NC
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I know nothing about today's vehicles but back in the old days.....
Had an old car doing the same thing, turns out there was a vent of some type that got plugged. Pressure built up and blew out the dipstick and fluid.
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Gale Hawkins
Murray, KY
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Beaker wrote:I know nothing about today's vehicles but back in the old days.....
Had an old car doing the same thing, turns out there was a vent of some type that got plugged. Pressure built up and blew out the dipstick and fluid.
Some call it burping. A pressure build up could have messed up the hose as well. Double check the level to make sure it was not overfilled. Update us on what is causing your problem.
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1mtnman
Colorado
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I would guess you are probably wasting your time asking these kinds of questions on this forum. I would take it back to a dealer and tell them to fix it.
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ib516
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He said it IS back at the dealer already.
I'm sorry, I can't help you with the issue, but I will tell you this: hot trans fluid on hot exhaust manifolds = fire. Be careful.
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Ductape
On the Road
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x2 on the above. Had one of our work trucks catch fire from that.
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Gale Hawkins
Murray, KY
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Ductape wrote:x2 on the above. Had one of our work trucks catch fire from that.
In another past thread some one gave transmission fluid fires as the 3rd major cause for a MH to burn. That is serious.
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NebraskaNative
Nebraska
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My '05 2500HD Silverado had trans pump problems late last year, luckily still under warranty. After the fourth trip to the dealer, I contacted GM to open a case, then the Case Manager from GM took over.
They finally re-manned the trans, new front pump, new torque converter, etc.
So my advice to you, raise some h3ll. Even though you are passed your 36k miles, still launch an appeal.
2005 2500HD 6.0L 4.10's, rear Timbrens
2009 Jayco Eagle Super-Lite 30.5 DBSA
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Redone
Syracuse NY
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Thank you for all the responses. Thankfully the hose that split was in front of the radiator, so the fluid stayed away from the exhaust manifolds. The dealer is telling me that the same hose going to the cooler blew again and that they have now replaced it with a reinforced hose.
I am not convinced, however, that the hose is the real cause of the problem. The first hose lasted for 18 months, while the replacement only lasted 26 hours! I have an appointment to meet the technician in the morning, so I am anxious to see what he has to say. Has anyone had a similar experience that might explain why the hose would blow twice.
Thanks again, Red.
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LittleBill
Scranton, PA USA
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its not the hose, they are trying the easy way to fix it, wait till the next thing blows, prolly be the other hose, is it the output line going to the cooler? the cooler isn't blocked is it? fluid is pumping through the tranny right?
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