Used 2016 GMC Canyon Crew Cab Consumer Reviews

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4.0

47 reviews

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Duramax "blew" me away

2dmax2, 02/04/2024

2016 GMC Canyon SLT 4dr Crew Cab 4WD LB (3.6L 6cyl 6A)

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I purchased this vehicle new, and loved it for the first 7 years...then sh!t hit the fan. When I purchased the truck I purchased the 7yr/100,000 mile warranty, since this was the first year of the diesel and wanted some protection from catasrophic failures. At approximately 92k miles (7 days after the warranty ended) the diesel High Pressure Fuel Pump (HPFP) failed, all internal seals were disintegrated (technician's verbage). This is apparently a common problem (but no recall was ever issued), which can lead to premature engine failure due to sending foreign material into the engine. This pump was replaced, however the new pump failed, after 2 days, and required replacement again, May 2023. The total cost for this was $6200, absolutely no help from GMC, even though the technician admitted that the pump had to have been "failing" for quite a while before it got this bad. At 100,450 miles (would have been about 1 week out of the 100k warranty, if not for the time constraint) my engine blew up while driving, 01 Feb 2024. There is a very good chance that when the HPFP pump had failed, 10 months earlier, it in fact send foreign material into the engines cylinders which might have led up to this catastrophic failure. Fortunately, I was on a rural street travelling at about 20 miles an hour, and not on the highway travelling at 70 miles an hour, like I was 10 minutes before this happened. When the engine blew it sent pieces of cast iron flying out the bottom of the truck, on a highway this could have seriously damaged vehicles travelling behind me. When it blew I also lost all 'propulsion', the truck immediately began coasting to a stop, had this happened at high speeds it would have been extremely dangerous because without the engine running the brakes lose pressure, plus the oil leaking out could have caused a loss of traction. From what I have found, while researching online, these 2.8l diesel engines have a fairly high failure rate (often being referred to as "a bomb just waiting to explode"), especially the HPFP, which might be part of the reason the General Motors discontinued using this engine in 2022. I feel that a recall should be done on all current 2.8l Duramax engines to do a complete inspection and replace all suspect components, as well as to reimburse those of us who were placed in harms way when our engines blew up on the road, due to GM's neglect. DO NOT RECOMMEND GENERAL MOTOR PRODUCTS FOR ANYONE I WILL NEVER OWN ANOTHER GM VEHICLE