Table 1 shows one common engine and engine cooling related problems of the 2019 Chevrolet Silverado 3500.
| Problem Category | Number of Problems |
|---|---|
| Engine And Engine Cooling problems |
Def pump and heater module had burned terminals. This caused failure to the def pump and heater module. This was the second instance of this happening on this truck in roughly 40,000 miles. Burned terminals can start electrical fires that are a danger to occupants and others in the vicinity. Failure of this system forces a drop in speed after so many miles that make you a danger on the road.
There is a common and very dangerous electrical wire routing problem on my vehicle, along with 3 dozen others and my dads (separate but same truck) I confirmed with (fb group for owners of 17-19 l5p GMC diesel trucks) where the alternator positive wire from the alternator to the battery is run right along and across a rather sharp part of molding from the air intake tube. This routing location and rough intake plastic molding rubs through the alternator wire creating a possible electrical short/ corrosion problems that can lead to battery and electrical system compromise, as well as fire risk! a short-circuit condition can cause damage to engine components and, in rare cases, start a fire in the engine compartment. I have 92,000 miles on this 2019, my father has the problem starting on his at only 40,000 miles and may others have issues as well to very degrees of severity between 25 and 150k miles. I discovered this issue while performing routine air filter maintenance and happened to see the rub damage. No modifications have been done, this is the way the wire is routed from the factory. Imo and estimations this issue far supercedes the danger and severity of the recall that currently exists for the engine block heater cord for these models of trucks. 2 of the photos show the damage and exposed wire as soon as I found it. The last shows the location and the part that caused the rub damage along with a temporary mitigation method: electrical tape with a rubber hose installed as a buffer until a permanent fix can be installed.
I continually receive a “low coolant “ warning on my dash. While the truck was under warranty, the dealership replaced the coolant reservoir which contains the coolant level sensor. Now that my vehicle is no longer under warranty they refuse to fix the problem unless I pay for it. The dealership has refused to acknowledge that there is a problem even after replacing it three times.
Tl-the contact owns a 20109 Chevrolet Silverado 3500 hd. While driving 45-65 mph towing a work and play tow trailer smoke was detected from underneath the vehicle the contact detected diesel fuel leaking while the ignition was in the on position noticed the fuel filter housing had detached. There were no warning lights illuminated. The vehicle was taken to glynn smith Chevrolet Buick GMC 600 columbus pkwy, opelika, al 36801 (334) 787-9904 where diagnosed that the screw detached from the fuel filter housing. But was not repaired. The manufacturer was contacted who referred contact to local dealer. The failure mileage was 6,280. Ap.
Experienced known chuggle issue at only 200 miles on the new vehicle. Information regarding this known issue by gm below (known issue since 2017). #pip5480: hesitation, bump or chuggle involved region or country: north America additional rpo/s: 6. 6 l5p condition: customer concern may be of a hesitation, bump, chuggle, jerk or a feeling of harshness under the following conditions:  1. Vehicle speed in the range of 25-45 mph.  2. Light accelerator pedal tip-in or tip-out maneuver.  3. Transmission in 3rd gear. Cause under investigation. Gm engineering is aware of this concern and is working on a resolution (since 2017 when l5p power plant was released yet they keep releasing vehicles with this issue).