Transfer Case Problems of GMC Sierra 1500

The np246 transfer case oil pump plate wears a hole into the case, causing it to leak. There is a saver plate that can be installed that prevents this problem.

See all problems of the 2000 GMC Sierra 1500 🔎.

Power train pcm defective with transfer case with bad designing with shoe pump, and brake line corroded and leak. Brake system will not prevent vehicle to stop when brake lines are leak. For my 2004 I was lucky driving on slow speed on city road, and I was able to use emergency brake to stop my truck.

See all problems of the 2004 GMC Sierra 1500 🔎.

The contact owns a 2014 GMC Sierra 1500. While the vehicle was in the park position, the four wheel drive service light illuminated without warning. The contact was unable to disable the four wheel drive. The vehicle was taken to be diagnosed by a dealer, but the issue recurred. The manufacturer was made aware of the issue. The VIN was unknown. The failure mileage was 20,000.

See all problems of the 2014 GMC Sierra 1500 🔎.

The contact owns a 2004 GMC sierra. The contact was towing a boat and discovered there was transfer case oil splattered all over the boat. The vehicle was taken to an independent repair facility where he was informed that there was a hole in the transfer case. A new transfer case and pump housing were installed at the independent repair facility. The failure did not recur. The failure and current mileages were 82,000.

The contact owns a 2006 GMC Sierra 1500. The contact stated that when driving at various speeds or sitting idle in park, the four wheel drive switch would intermittently activate and independently shift into low drive. The vehicle was inspected by a dealer who informed the contact that he would need to replace the module in the transfer case. The vehicle was not repaired. The VIN was unavailable. The failure mileage was approximately 36,000.

See all problems of the 2006 GMC Sierra 1500 🔎.

Transfer case nv 246 internal oil pump wears hole in magnesium case and leaks oil completely out of transfer case. Oil coats underside of vehicle including hot exhaust system. Smoke appeared from vehicle. Transfer case made abnormal grinding noise and then overheated damaging internal components. Transfer case requires replacement. Vehicle was completely disabled because of failure. Fire was averted. Vehicle maintained at dealer exclusively except for oil changes. Dealer never provided any info regarding potential major design flaw. Repair quote from dealer $2200.

The contact owns a 2006 GMC Sierra 1500. The contact stated that while driving 75 mph, the service 4-wheel drive light illuminated. The vehicle was taken to the dealer for diagnosis and the transfer case encoder motor and transfer case selector switch were both replaced. Three years later the failure recurred. The vehicle was taken to the contact's personal mechanic and the same parts were replaced. The failure mileage was 75,000 and the current mileage was 113,000.

The contact owns a 2005 GMC Sierra 1500. The contact stated that the vehicle ran hot at speeds of 50 mph and greater. When attempting to make a left or right turn the vehicle operated as if it was shifted into low four wheel drive. The vehicle was brought to the dealer on five occasions for this failure. The dealer currently possessed the vehicle. The current mileage is 20,300 and failure mileage was 18,000.

See all problems of the 2005 GMC Sierra 1500 🔎.