Automatic Transmission problems of the 2007 Chevrolet Silverado 2500

Gm has a desgin flaw on the trans cooler lines and steering lines that cause the to leak. Gm will not address to date. This occures on the 2500hd and 3500hd duramax pickups the lines have only three crimps and start to leak in cold weather.

The contact owns a 2007 Chevrolet silverado. While driving approximately 70 mph, the contact stated that the transmission oil cooler failed, causing the vehicle to loose transmission fluid. The dealer informed the contact that the vehicle was not under warranty and that the transmission oil line cooler needed to be replaced. The manufacturer was contacted and the contact was awaiting a response. The vehicle was not repaired. The current and failure mileages were 67,674. The VIN was unavailable.

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. They also informed me this was a very common problem they have seen a lot of, but there is no recall and it would be a rather costly repair. I did not pay the outrageous fee and have not yet fixed the problem. . .

While doing routine maintenance on the truck I noticed the transmission cooler lines leaking. The failure is the cause of a poor fitting design on gm's behalf, and they have not committed to providing an updated part but instead choose to replace the lines with the same inadequate part. The leaking lines have not been replaced.

My transmission cooler lines began leaking 3 months ago. I took it to the dealer and instead of them replacing the lines, they told me that I needed a new transmission and lines and it would cost me $6200 to fix it.

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.