Auto diagnostic tools How to Troubleshoot a Check Engine in a GMC 2002 Denali

How to Troubleshoot a Examine Engine within a GMC 2002 Denali 1Read your scan tool's user manual. Although the approach of applying a scanner is easy to grasp, there are slight variations by brand. The following measures certainly are a generic, generalized version of that procedure. Though you happen to be reading, location a book mark within the section lists generic OBD-II codes and their descriptions. This will typically be toward the back with the manual Auto diagnostic tools, and typically comes in the type of an appendix. You can return to this list later.2Locate the Yukon Denali's diagnostic data link connection. You come across this beneath the dashboard, suitable above the parking brake.3Insert the scan tool's plug in to the diagnostic data link connection. Some scanners may turn themselves on at this point, sensing the OBD-II method. In case your scanner does not, you might want to switch it on.4Either commence the Denali's engine or its electrical program, whichever your brand of scan tool calls for.5Key within a command to "scan" or "read" the codes, in case your brand of scanner did not automatically fetch them.6Look in the codes the moment they appear in your scan tool's screen. Seek the advice of the pages within the scanner's manual which you bookmarked earlier. The descriptions will let you know exactly where inside the engine the issue is situated. When you can not come across the code within the manual Obd2 scanner, you could have to obtain the definition on the net. The Common Motors family members of cars have their very own supplemental OBD-II codes. After you have pinpointed the issue, you can make an educated selection about whether or not you can attempt the repair yourself or seek the advice of a professional mechanic. Related articles: