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2005 GMC Sierra 1500 Questions

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I have a 05 gmc 2wd the trans is stuck in 3rd gear check engine light is on all 10 codes are pointing to all different things in the trans some days it shifts normal and some days it goes into limp mode so i started checking all connections found transmission oil in the sealed connector on shift module would this cause my problems and do i just need to replace my shift module any help would be appreciated no other noises
Have to remove msec fuse to kill engine
Just started now it will not fire
I do not know what to do. IM tired of being stranded. I've pulled fused. Replaced fused. Tore the ignition down. Now what. Now in sick from being stranded for hours. I want to trade my baby in butt I love this truck.
4wd don’t work; wont light up in 2wd . Drive fine but can’t switch it. Start truck and it’s in 4low.
I think it’s electronic problem.
Swapping out my engine, I need to unplug this sensor but cannot figure out how to get it disconnected.
I left the key in the on position overnight , battery died . Shifts hard between 1 and 2 . Tach no longer works . Engine light is on and it say stabilitrak needs service. It’s a 07 gmc 4wd automatic 5.3 Before the battery died, it was perfect
What is it going to cost me to replace the XM antenna on my vehicle? It is failing and I really like my XM radio
FOB transmitter (0-GM904F) programmed correctly but does unlock/lock door. Maybe receiver is problem but cant find it in passenger door.
when driving my anti theft light comes on and shuts off all my gauges of but the battery gauge and turns off the ac it still blows air and drives fine what could be causing this???
From Day one (8/15/05) my Selector switch has given me problems. 2 switches, software update, TCCM replacement (warranty finally) and now I'm being told that my transfer case needs to be completely replaced!!! I'm done! This has been the only consistent issue with this truck and GM will not acknowledge the issue. HD's and Diesels do not have this issue, I have asked anyone and everyone who i see that has this style of truck. Looks on the Silverado 1500 page with this issue and its crazy!!!
Started about two weeks ago. Today's date 12/24/15
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