2008 Cadillac DTS: fuel pump failure

Filed Oct 14, 2020 · Electrical · 100,000 miles · MS

Rear fuse block fuel pump relay shorted out melted fuse block...could catch back seat on fire and very close to gas tank.

Filed Mar 11, 2020 · Electrical, Fuel system · 77,800 miles · NY · fire

Rear passenger fuse block (p/n 19116816) gets melted by a faulty fuse pump relay burning up due to a faulty design within the fuel pump system. Fuel pump putting a lot of resistance on the wiring, relay won't blow, but it melts. Without correcting this, the fuse box will be affected once the fuse pump relay overheats and eventually melts and burns. Car was stationed. This is unsafe by any means. The fire could have spread and caused the seats to burn and worse, it's right by the gas tank.

Filed Jan 17, 2020 · Electrical · NE

My 2008 cadillac dts woudl not start, I found the fuel pump relay to be burnt. I replaced and was able to drive for 150 miles, same thing happened again. Replaced the relay again in order to get home. I then replaced the fuel pump, same thing happened. Then I researched that this is a known problem and that the fuse box under the rear seat needs to be replaced. Fuel pump relay keeps burning up under the rear seat, potential fire hazard. It will continue to burn until you remove it.

Filed Aug 5, 2019 · Electrical · 100,000 miles · MI

2008 cadillac dts (100k mi) was parked and engine would turn over but not start. I determined that there was no fuel to engine by checking schrader valve on fuel rail. Proceeded to check fuel pump (fp) fuse (ok) and fp relay (burned on pin 30 along with fuse block). Replaced fp relay; however, after a few minutes from vehicle start, the relay heats to about 200 degrees f. After reading several forums, this is not uncommon: it appears the fuse block (under rear seat ). Is defective. I have ordered gm block 19116810 which apparently supersedes the original factory gm block 13599106. This problem clearly poses many safety issues: fire, engine shut down while driving, etc. Gm needs to take ownership of this problem. Moreover, I have also experienced the burned out connector (under passenger seat) for the heated seats. Fortunately, I did not have the heated windshield washer option which also experienced electrical issues. Shame on gm for not correcting these engineering design defects. Safety should be paramount with these types of issues on your vehicles especially your premier brand (cadillac).

Filed Jul 24, 2018 · Electrical · 160,000 miles · GA

Tried to start my car and it would turn over but not crank. Replaced the fuel pump and fuel pump relay. Car started and I drove about 10 miles and it cut off while driving. Since we replaced the relay my husband took out the back seat to check it to find the fuse box too hot to touch and smelled like burning wires. He disconnected the battery to avoid a fire. This could have been a disaster had he not had the forethought to check the fuel relay. It was just before causing a fire and we had two passengers in the back seat.

Filed Apr 24, 2017 · Electrical · 58 miles · MD

Fuel pump relay overheated to the point of melting causing irreparable damage to the relay and the fuse block located inside the passenger cabin under the back seat of the vehicle creating a potential fire hazard. Vehicle was in motion on a city street when failure occurred causing loss of all power steering and braking.

Filed Jan 15, 2017 · Electrical, Fuel system · 108,000 miles · GA

In nov. Of 2016, my dts was parked and after attempting to start, it would not turn over as if were out of gas. I had to have it towed to repair facility. It was diagnosed and determined that the problem was caused by the fuel pump relay, which had shorted. Further investigation revealed that the actual cause was the fuse block (rear seat). This item is a dealer repair level and should have been recalled since there are several cases of this and other electrical problems involving sudden cut-offs, power steering issues and ignition key problems noted here. My car has experienced all of these.

Filed Oct 28, 2016 · Fuel system · 85,753 miles · VA

Fuel pump relay melted replaced rear fuse box and relay tried to start vehicle on 6 june 2016 vehicle would not start at all. Had vehicle towed in to diagnose $81.99 just purchased about 6 months ago. Purchased a warranty but this problem was not covered. I have never had this experience with a vehicle. After extensive reading I find this is a problem with a variety of cadillac vehicles. I had to pay $796.43, parts were $397.51.this should have never happen and could have caused major damage. Since cadillac know this is a problem I feel I should be reimbursed for my suffering and pain. This problem could have resulted in a fire starting in the seat area. I probably would not have known until it was to late.

Filed Sep 14, 2015 · Electrical · 120,000 miles · CA · fire

On 9/4/15 @ approx 5:45 p.m, vehicle would not start - it acted like there was no fuel getting to the injectors. Three hours later I tried to start the car and it started just fine; took it for a drive around the block w/o any issues. On 9/7/15 the problem resurfaced; I had the car towed to a local mechanic who diagnosed the problem on 9,/8/15, to be a bad fuel pump relay. Car worked fine for one day; on 9/9/15 the problem resurfaced once again - if the car sat off for a couple of hours the problem would go away. I took the car to the buick gmc dealer and they diagnosed the root cause to be a bad fuse box assembly ($318 part). The fuel pump relay got hot enough to melt the hard plastic of the fuse box assembly, and there are burn marks on the body of the fuel pump relay - I have the old parts and pictures of same. The service rep at the buick gmc dealer said they have seen this problem on buick lacrosse. Being that the fuse box is under the rear seat of the car, there is the potential for the car to catch on fire.

Filed Jan 31, 2015 · Electrical, Engine · 84,000 miles · TN

After parking my car in the garage,approximately 3 weeks later,I went to start my car,but it would not start,it would crank over good ,but would not start. I proceeded with my own assumptions and found a pin(#30)on the fuel pump relay was burnt,I had an electrical diagnosis performed on the wiring and the fuel pump,both passed okay,I was told the fuse block was bad,(which I suspected),which I had previously ordered from the cadillac dealer. On installing the new fuse block,the problem was solved.

Filed Jan 30, 2015 · Fuel system · 82,000 miles · NY

Fuel pump module overheated, almost to the point of fire. This part was recalled in 2006-2007 cts-v and sts-v, but continues in their 2008 dts. It is different in the manner it occurs, but with same result. Replaced the module, car died again, replaced fuel pump and module again, car died again. This is very dangerous with children strapped in sitting right over the burning hot module.

Filed Mar 31, 2014 · Electrical, Fuel system · 86,382 miles · OH

The cadillac dts 2008 would not start.. Had dts towed to foreman-blair gm dealership.. 896382 scan for codes none found no fuel pressure no voltage at circuit to fuel pump no voltage burn connector at fuse box replace box c multi point inspection the relay 19116057 got hot and burn connector at fuse box and melted the fuse block 19116816 which is located under thr back seat,, that might set the car of fire.. This not the first time this has happen on dts car there are more on the internet that had the same problem,,, I need to get my money back $735.18 , because this was not my fought.