General Motors has released a Customer Satisfaction Program for select units of the Chevy Silverado 1500, Chevy Tahoe, and Chevy Suburban due to an issue with contaminated engine blocks.
According to Customer Satisfaction Program N242455301, certain 2024 Silverado 1500, 2024 Tahoe, and 2024 Suburban units may have a condition where the engine block of the naturally aspirated 5.3L V8 L84 powerplant may be contaminated. To rectify this problem, certified General Motors technicians will be instructed to inspect affected vehicles and replace the engine as necessary. Notably, this should take GM techs a little less than 20 hours to perform, depending on the exact drivetrain configuration.
It’s worth noting that it’s currently unclear how many units are affected by this engine block contamination issue. However, dealerships have a list of VINs, while affected units can’t be sold until the fix is applied. In fact, affected examples have been under a Stop Delivery order since June 13th, 2024.
As a reminder, the 5.3L L84, rated at 355 horsepower and 383 pound-feet of torque, is one of two available V8 powerplants offered on the Silverado 1500, Tahoe, and Suburban. The naturally aspirated 6.2L V8 L87, rated at 420 horsepower and 460 pound-feet of torque, stands as the most powerful engine across all three Bow Tie products. Meanwhile, the 3.0L I6 LZ0 turbodiesel Duramax engine, rated at 305 horsepower and 495 pound-feet of torque, is currently offered for the 2024 Chevy Silverado 1500 and will become available on the refreshed 2025 Tahoe and 2025 Suburban models.
The turbocharged 2.7L I4 LB3 gasoline TurboMax engine, rated at 310 horsepower and 430 pound-feet of torque, is not offered on either full-size SUV and currently stands as the entry-level powerplant for the Chevy Silverado 1500.
Under the skin, the Silverado 1500, Tahoe, and Suburban each ride on their own version of the GM T1 platform. Meanwhile, production of the light-duty Silverado takes place at the GM Fort Wayne plant in Indiana, the GM Oshawa plant in Canada, and the GM Silao plant in Mexico, while the Tahoe and Suburban are produced at the GM Arlington plant in Texas.
Be sure to subscribe to GM Authority for Chevy Silverado news, Chevy Tahoe news, Chevy Suburban news, Chevy news, GM quality news, GM business, and more obsessive-compulsive GM news coverage.
Comments
Just received this bulletin/recall this morning…..8 sold units affected in canada….unknown how many dealer held trucks affected …..
First Toyota has a massive with the same issue and now gm. Quality is supposedly getting better, I don’t see it. Who’s inspecting these processes
No
First was Hyundai then Toyota
and they want more money to build these? uhm yeah no.
3470 units are on the stop sale VIN list for US. Some are on lots, some are still in transit at rail yards or shipping yards.
WTH?? What has happened to GM? I’m keeping my old Silverado for a while longer. I don’t think the new ones are any better than my old one.
Mary Barra should be very concerned- from reading news updates of Chevy, Buick, GMC, and Cadillac-‘Quality is slipping into the dumpster!
On the dumpster:
Yeah, and she should be a diver.
Union sabotage???
Could someone elaborate on ‘contaminated’? Oil filter air filter not doing its job? Moisture? Bacteria? Mold? COVID? what.
Chevy Cruze and Volt blocks are reliable, 358K miles on my 2013 V
sand from casting maybe.
Tech above posted 3500 units on stop sale. Think there was an article on this detailing it more.
Would seem the data bolts used in assembly were able to pinpoint affected units.
I too would like to know what “contaminated” means.
Maybe the material that the block is made of didn’t have clean steel, to much slag?
That makes sense or possibly metal shavings from manufacturing but that would be a glaring problem. Article also does not state in what manner these contaminated engines can fail.
I would wager the engines weren’t cleaned properly after machining and the blocks are full of metal flakes the same as Hyundai and Toyota
Cutting corners and getting caught at it. Wonder if Ford has any (contaminated) blocks out there. Not that they would admit it. The last thing they need is more recalls.
The 5.3 is seriously underpowerd compared to Ford,s 3,5 v6 (400 hp and 500 torque) even the 6.2 has trouble matching the ecoboost motor , and dont give me all this turbo failure crap.
Yea Terry but the Ford sounds like a 4 cylinder and gas mileage is terrible when towing anything! Trucks only deserve V-8’s
The 5.3 is junk, if you have a choice choose the 6.2, much stronger and more reliable.