Question about 2005 GMC Yukon Denali
Outside temperature affects how long it will run before it shuts down. All gauges and power to the engine first sputter then die. Radio and lights work fine all of the time. I can lift the hood for about 5 minutes and it will run again. this works for about 10 miles then it will not move more than a few hundred yards. I don't know what relay / fuse controls the computer and not the other electronics. The truck will idle for as long as I let it. It only shuts down when driving. If it starts acting up shifting into neutral will sometimes stop the engine from dieing. Same goes with shifting it into park. If you catch it quick enough and keep the RPMs up the truck will stabilize. Any help?
Check the fuel pressure under a load also GM is well known for ign module problems..
Posted on Jun 13, 2014
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Posted on Jan 02, 2017
SOURCE: 1999 Gmc Sierra has no power
Sounds like the fuel supply is inadequate. Check for a plugged fuel filter, or possibly the fuel pump is losing pressure. I had a 93 Chevy V6 that acted the same way, and after checking everything else I replaced the fuel pump, which solved the problem.
Posted on Jun 10, 2008
Like to other guy said, give it a tuneup. Also try SEAFOAM to clean carb up of slug. Also check to make sure the butter fly for the choke has not come loose, causing it the choke it down. Failed choke pull-off.
Posted on Feb 02, 2009
SOURCE: Lack of power when accelerating
You really should have a code check done. There are numerous items that can give you similar symptoms. Two places to look are the fuel filter (usually overlooked till they gum up, and the throttle position sensor (but test it first with an ohmeter. You will need a manual (vehicle specific ones are available at most larger parts stores and most of those stores also do code testing free)
Posted on May 27, 2009
Check the fuel cap!! If the vacuum relief is not working it can impede the fuel flow and cause the engine to shut down or not restart after a stop. Waiting usually gives things a chance to stabalize and the engine will restsrt. When this happens again try loosening the cap and see if the engine will restart.....If it restarts immediately, REPLACE the fuel cap..Do Not leave it loose because this will cause other problems. If it is not the fuel cap the problem may be the filter, the fuel pump, or aome other fuel system malfunction.
Posted on Jan 24, 2010
Testimonial: "Great will try it "
Check TPS for smooth and linear electrical response over the entire range of motion. If the response is jumpy or erratic at all, replace TPS.
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Posted on May 11, 2010
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