Where is the EGR valve on a LML engine?
On a LML engine, the EGR valve is near the front on the left side, it has a brown connector with a yellow retainer. The cooler bypass valve is at the rear of the passenger side, almost can’t see it below the cowell, but has the same style connector plugged into it.
Is there a warranty on a failed EGR valve?
I have a (bought second hand) 2011 3500HD LML DRW 4×4 with 165,000 miles and the P140a and 2493 Failed EGR Bypass Valve has appeared. I have tried to convince the dealer and GM customer service in TX to honor the warranty to no avail. This was never performed on the truck when VIN was run.
How long does it take to replace EGR cooler?
FWIW, Alldatadiy says it’s 3.0 hours to replace the EGR valve, $323.58 for the EGR valve, dealer list. Additionally, they say 3.1 hours to replace the EGR cooler (EGR valve is attached to the cooler), so maybe 6 hours to pull the cooler and valve, replace the valve on the cooler, and reassemble. This would be for a 2008 2WD.
What can I use to clean an EGR valve?
This is a home experiment and an unbiased use of JLM Diesel Air Intake & EGR Cleaner. Similar products are available. This product is designed to dissolve carbon deposits, gum and varnish build up. It should restore air flow to the engine thus improving power and acceleration while reducing exhaust smoke.
Where is the EGR valve on a Duramax?
Over time, the EGR valve will clog and will need to be replaced. Disconnect the cable on the negative terminal of the battery. Locate the exhaust manifold on the engine. The manifold will be on the right side, or driver’s side, of the engine, but its location will vary slightly depending on the particular Duramax model.
What kind of valve system does a Duramax have?
Duramax diesel engines are installed on many of General Motors light and medium capacity pickup trucks. The engines are all equipped with an EGR valve system, which operates by recycling a portion of the exhaust through the engine.
Why does the EGR valve need to be replaced?
This increases fuel economy by ensuring that all of the diesel fuel has been consumed. It also reduces emissions because it prevents the fuel from being released into the atmosphere. Over time, the EGR valve will clog and will need to be replaced.
Where is the exhaust manifold on a Duramax?
The manifold will be on the right side, or driver’s side, of the engine, but its location will vary slightly depending on the particular Duramax model. Locate the metal tubing that is connected to the exhaust manifold. Follow the tubing to its other end, which will be connected to the EGR system.