Automatic Transmission Cooler Problems of GMC Jimmy

Transmission fluid coolant lines from transmission to the radiator leaking at the transmission connection steaming flammable transmission fluid onto the hot exhaust system components. Connections of lines at the transmission leak due to inadequate allowance for normal movement between the radiator and fixed transmission connection.

See all problems of the 1999 GMC Jimmy 🔎.

Transmission failure / replaced transmission - upper & lower ball joint failure / replaced upper & lower ball joints - rear window wiper failure / inoperable at this point - extremely expensive replacements with no old parts available at this point. Events leading up to failure I can only attribute to severely poor manufacturing of products, there was no operating misuse or abuse. Also other parts that have failed and have since been replaced are the: alternator, fuel pump, fuel pressure regulator and cooling system failures.

See all problems of the 1997 GMC Jimmy 🔎.

My 2000 Jimmy has oil leaking from the oil cooler hoses, this is a known issue on these vehicles. Where is the recall? also, my gas gauge is displaying inaccurate readings. I hear this is also common on GMC Jimmy's. Where is that recall? now to go along with my power window switch not working, molding coming loose, rear inside door handle breaking off, etc. All this with only 49,000 miles.

See all problems of the 2000 GMC Jimmy 🔎.

Transmission fluid coolant lines from transmission to the radiator leaking at the tranmission connection streaming flammable transmission fluid onto the hot exhaust system components. Connections of lines at the transmission leak due to inadequate allowance for normal movement between the radiator and the transmission.

Transmission oil cooling line is leaking from metal attachement. Please give any further details.

See all problems of the 1998 GMC Jimmy 🔎.

The serpentine belt tensioner is an item requiring no maintenance. When it fails the vehicle is completely disabled. The transmissin cooling line failed where it connects to the transmission. This connection point is directly above the exhaust system so when it fails transmission oil is spewed all over the hot exhaust pipes/catalytic converter.

At first we noticed the passenger side floorboards were very wet. We proceeded to look under the vehicle, since it had been raining recently. Then we saw transmission fluid from the front of the transmission. To the rear drive axle. Immediately the vehicle was taken back to the dealership. Where the transmission pan gasket was replaced. Then the transmission pump and o-ring. A passenger side door gasket was ordered that was determined to be leaking. While waiting for the door gasket to come in, it had not rained in two weeks, but the floor continued to stay wet. Since it is very hot here we notified the dealer when it was taken in for the door gasket replacement. The air conditioning drain lines were blown out to correct this problem.

One of the transmission lines loosened, causing transmission fluid to leak out. This could have caused major damage to vehicle. Problem has been corrected. Transmission fluid leaked oil over the exhaust system including the convertor.

Transmission has a history of "shifting hard" between 1st and 2nd, especially when warm. During a routine oil change, mechanic noticed a "rusted trans dip stick". Though protested by gm as a defect, extended warenty covered. I had to go elsewhere for trans flush, dealer did not have equipment. Problem persists through 2000. Trasmission overheated on hwy causing overflow and slipage. Dealer found "rust in radiator" and "debrise in trans". Had to replace radiator/flush engine and trans. At my expense 1/2001. Now, with warmer weather, trans. Oil is "varnished" and shift hard between 1 & 2nd again just 5000 miles later. Engine lite on. . Read more...