What causes a Duramax to surge?
The most common culprit is a tiny air leak in the fuel system somewhere. Inspect the flexable fuel lines from the tank to the fuel pump, if there is even the tinest air leak, surging, hard starting, and infrequently small drops of fuel on the driveway happen.
Is a lope tune bad for your diesel truck?
Lope tunes sound good but are bad for injectors. Something about the waffer plates in them. And the more soot goes through the turbo, the quicker it will “plug up”.
What causes low fuel rail Duramax?
It could be a restriction or a leak on the supply line between the fuel tank and the injection pump. It could be a weak injection pump not able to increase fuel pressure up to the maximum under load. It also could be one or more injectors have high return rate.
Where is the fuel rail pressure sensor located on a 6.6 Duramax?
The sensor is mounted on the right fuel rail under the EGR Cooler.
How much does it cost to replace injectors on a 6.6 Duramax?
How much does it cost to replace injectors on LB7? The total cost to have a mechanic replace 8 injectors on an LB7 Duramax can range from $4000 – $5000 CAD, depending on what other work is performed at the same time.
Are there any issues with the GMC Sierra 2500?
It has been reliable with only a few issues as it began to age. It made me realize some small preferences for the next vehicle, such as: having crew cab with four doors instead of the extended cab. The main issues encountered were: antilock brakes, window motor failure, signal lights always blown, and easily broken center console.
Where can I buy a 2003 GMC Sierra?
2003 Sierra 2500HD listings within 50 miles of your ZIP code. Get answers to buy with confidence. Save when you purchase multiple reports. Get free quotes from dealers near you.
When did the GMC Sierra 2500HD come out?
1st owner purchased on 04/30/03 and owned in CA until 12/23/10 • 2nd owner purchased on 12/23/10 and owned in CA until 02/22/11 • 3rd owner purchased on 05/10/11 and owned in CA until .
Are there any problems with the LLY Duramax?
In terms of LLY injector problems, GM had sorted out the internal failures with the 2004 ½ redesign, but the LLY Duramax would occasionally exhibit a trouble code for the injectors, but in most cases it turned out to be an issue with the injector harness rubbing through and causing a short or open in the wiring.