Question about 2008 Buick Lacrosse
Replaced egr valve and drove over 100 miles thinking it needed to reset itself but light is still on
You may need to disconnect the battery for 60 seconds to get it to reset.
Posted on May 13, 2014
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Posted on Jan 02, 2017
If you have the 3.1 engine, they are prone to having the egr passage clog up in the intake. There are 3 solenoids on the valve that open under differant load conditions. Sometimes during high egr flow demands the passageway is clogged enough for the computer to see not enough change in map or o2 sensor readings. Take off the valve, open up the throttle and see if there is carbon deposits caked up where the egr port is. If so get some GM top engine cleaner spray and a wire and clean the passage. This is a common problem.
Posted on Nov 27, 2008
SOURCE: replace egr valve
Your 2001 Buick has digital linear EGR valve, and should be able to be replaced and the SES light cleared. When the conditions are correct, while driving, the computer will open the EGR valve and watch inputs from the valve itself, as well as the MAP sensor, and Oxygen sensor to verify proper operation of the EGR valve. There is no reprogramming required to change an EGR valve on a 2001 model year Buick. General Motors may have a re-flash available to correct an EGR issue, and sometimes they recommend this re-flash with a new part. I checked my sources for you and could not find any TSB (Technical Service Bulletins) that are associated with EGR valve replacement, or re-flashing of the computer to correct erroneous EGR codes. Regrettably, it sounds like you have an issue with your mechanic, and POSSIBLY a misdiagnosis. Hope this helps!
Posted on Feb 01, 2009
SOURCE: DTS-P 1404(EGR Valve)
unhook the battery for ten minutes and hook it back up... that will clear the code... if your stereo requires a code make sure you know it first.
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Posted on Feb 09, 2009
wow thermostat >>>> shucks i believe its evep emissions code like faulty gas cap ....you can reset any computer the chck eng light will come on in 50 to 100 miles if not fixed....
Posted on May 08, 2009
Have an auto parts store check for the code. It is possible that you have a bad O2 sensor or your catalytic converter is clogged.
Posted on Apr 10, 2010
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