Hi everybody. First time poster here. I recently acquired a 2005 Chev Tahoe LT in fabulous condition. Runs and drives like a dream, purchased from original owner.
There appears to be an odd problem with the 4WD system. Whenever I start it up, the "4hi" light is on. When I try to switch it to "2wd", the "2wd" button light will flash for about 15 seconds then it will go back to the solid "4hi" light. If I push the "Auto 4wd" button, the light will flash for about 10 seconds then it will stay on in "Auto 4wd". When I turn it off then back on, it will go back to the "4hi" light. There are no sounds coming from underneath that resemble any sort of shifting attempt that I can recognize. The truck does not seem to go into 4WD. The "SERVICE 4WD" notice will appear on the DIC but not constantly. I have not yet had a chance to have the codes pulled. Once in a while, when I start up, it will start in 4hi but it will stay there and no other button will do anything. I could press 2wd and Auto 4wd all I want but no lights will turn on or flash, just the 4hi light stays on solid. If I restart, it will go back to the condition I described above. The "service 4wd" notification appears on the DIC but not on a regular basis or in any predictable pattern. I tried to pull the fuse for the 4wd system. When I did, ALL of the lights came on all at once, including the red "N" light.
Sound familiar to anyone?
There appears to be an odd problem with the 4WD system. Whenever I start it up, the "4hi" light is on. When I try to switch it to "2wd", the "2wd" button light will flash for about 15 seconds then it will go back to the solid "4hi" light. If I push the "Auto 4wd" button, the light will flash for about 10 seconds then it will stay on in "Auto 4wd". When I turn it off then back on, it will go back to the "4hi" light. There are no sounds coming from underneath that resemble any sort of shifting attempt that I can recognize. The truck does not seem to go into 4WD. The "SERVICE 4WD" notice will appear on the DIC but not constantly. I have not yet had a chance to have the codes pulled. Once in a while, when I start up, it will start in 4hi but it will stay there and no other button will do anything. I could press 2wd and Auto 4wd all I want but no lights will turn on or flash, just the 4hi light stays on solid. If I restart, it will go back to the condition I described above. The "service 4wd" notification appears on the DIC but not on a regular basis or in any predictable pattern. I tried to pull the fuse for the 4wd system. When I did, ALL of the lights came on all at once, including the red "N" light.
Sound familiar to anyone?