The way this timing is done on this engine you actually can do it without any specialty timing tools by following this article. There is mentions of specialty tools to time this 2.9L engine in the shop manual, but these tools are not required. If you want to hear more about the story on my brothers truck or see a video of my thoughts on this project, you can read about it in TechTales : GM 2.9L Engine Crazyness. The local shop wanted, what I thought, was an excessive amount of money so I set out to to replace timing chain, guides, and tensioner on his 2.9L engine in my personal garage to save him a lot of cash. I came across working on this GMC Canyon because my brother owns it. I rarely get the opportunity to work on any other brands of vehicles as I do not generally work on the trade in cars. Normally here at Expertswrite, I write articles focused primarily on Ford products because of my job at a Ford dealership. I didn't find much in my search except basic instructions, so I decided to write a detailed how to guide on changing the timing chain on your Chevy Colorado or GMC Canyon specifically, although the guide will work for other makes and models. Since Chevy or GMC products are not my bread and butter, I took to the internet to find a detailed guide on replacing the timing components. Really, the only problem was how the engine was engineered - it took an excessive amount of time to remove all the components in the way of accessing the timing chain. It was no easy feat, but there wasn't really anything difficult about changing the timing chain. If you suspect your engine requires a timing belt or timing chain replacement, talk to a technician about your vehicle's needs.I took on the task of changing the timing chain, guides, tensioner, and sprockets on a 4 cylinder 2.9L GM engine that comes equipped in GMC Canyon, Chevrolet Colorado, Hummer, Isuzu Ascender, and Chevrolet Envoy. Technicians take the time to precisely time your engine to protect the internals and ensure it creates the expected amount of power. In general, timing chains take a lot longer to replace than belts due to their placement inside the front of the engine. The total replacement time depends on the type of timing apparatus used by your engine. The diagnostic process also identifies any other problems contributing to the symptoms you detailed during the consultation. Technicians can quickly and easily confirm the diagnosis of faulty timing belts and chains before proceeding with the replacement. How Technicians Can Help Replace a Timing Belt Rattling or scraping sounds coming from the front of the engine.Misfires, which make the engine shake uncontrollably or run unevenly at idle.The inability to see the timing chain directly makes it difficult to visually detect failing parts. Timing Chain Common signs of a timing chain problem Poor idle that causes the entire car to shake.Large amounts of dark gray exhaust exiting the tailpipe. Hard starts whether the engine is hot or cold.Timing Belt Common signs of a timing belt problem include: The overall condition of your engine and timing components will greatly influence the signs presented as the timing belt or chain wears out. Warning signs for Timing Belt Repair or Timing Chain Replacement Watching for common signs of timing component failures can help you protect your engine. Even when sticking to a schedule, it's possible your vehicle could end up needing the part replacement early. For many vehicles, the manufacturer provides an ideal mileage limit to observe for timing belt and chain replacements.
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