Water Pump Problems of Cadillac Deville

Cadillac Deville owners have reported 5 problems related to water pump (under the engine and engine cooling category). The most recently reported issues are listed below. Also please check out the statistics and reliability analysis of Cadillac Deville based on all problems reported for the Deville.

car image   Water Pump problem of the 2000 Cadillac Deville 1
Failure Date: 05/09/2016

Engine began overheating and took it to our mechanic who replaced the water pump. Engine continued to overheat and same mechanic replaced all of the upper seals. Eventually, a pressure test and camera insert by my mechanic confirmed a blown head gasket. Confirmed that result with pepe Cadillac in white plains, NY. Checked the price to have the head gaskets replaced, but since this engine has to be removed from the bottom of the vehicle, the costs are outrageous and the only acceptable fix for these aluminum heads are bolts rather than the gm serts. Bad engine design by gm since their bolts were too short and the bite was not large enough in the block to prevent the head gaskets from blowing. Sad epitaph for a car with only 65k lightly driven miles on it having spent all of it's off road life in our garage. After much research, I was able to confirm that this is an inherent problem with the northstar engine during that period and was finally solved after 2004. Gm knows about the engineering northstar engine problem but refuses to accept responsibility for it.

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car image   Water Pump problem of the 2001 Cadillac Deville 2
Failure Date: 01/04/2014

The contact owns a 2001 Cadillac Deville. The contact stated that there was oil leaking from the engine. The vehicle was taken to a dealer, who diagnosed that the engine needed to be resealed due to a leak coming from the valves. The contact also took the vehicle to an independent mechanic, who diagnosed and replaced the water pump, the spark plugs and the valve cover gasket. The failure recurred. The manufacturer was notified of the failure. The approximate failure mileage was 70,000.

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car image   Water Pump problem of the 1999 Cadillac Deville 3
Failure Date: 06/01/2008

The contact owns a 1999 Cadillac Deville. The contact stated that the vehicle would overheat. He took the vehicle to the dealer and they replaced the water pump. The failure recurred and the contact was informed that most of those model vehicles were designed to operate in that manner, and it was safe to drive. A few days after the water pump was replaced, while driving 70 mph, the vehicle began to excessively overheat. The contact shut off the engine and had the vehicle towed to a mechanic. He was informed that the cause of the failure was not the water pump, but rather a blown out head gasket. The vehicle cannot be repaired without a new engine. Through online research, he discovered that his model vehicle has numerous issues due to overheating and head gaskets. The vehicle has not yet been repaired. The failure and current mileages were 74,000. Updated 07/08/08. Updated 07/08/08.

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car image   Water Pump problem of the 1999 Cadillac Deville 4
Failure Date: 10/04/2007

The contact owns a 1999 Cadillac Deville. While driving 65 mph, the engine warning light illuminated, which indicated that the engine overheated. The dealer stated that the water pump caused the failure. The dealer repaired the water pump; however, the failure continued to occur. The contact felt that the engine was defective. As of October 26, 2007, the dealer had not repaired the vehicle. The failure mileage was 78,800 and current mileage was 79,000. Updated 01/02/08 the consumer stated the engine heats up due to the head bolts loosening and the engine coolant evaporates into the cylinder heads. Updated.

car image   Water Pump problem of the 1997 Cadillac Deville 5
Failure Date: 05/13/2005

The gas gauge did not work properly. The consumer took the vehicle to a mechanic. The mechanic said there was a recall with the fuel rail . He told the consumer to go to the dealership because vehicle had a transmission and oil leak. The vehicle was taken to the dealer they did the recall and gave them a copy of what mechanic had given the consumer. They replaced the water pump, and said there was a bad oil leak. This wasn't consistent with what the mechanic said. Felt like the vehicle was a safety hazard due to the north star engine. The consumer was told the vehicle needed a new crackcase seal due to an oil leak, the water pump was leaking and there was no transmission leak.

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