i don't know when this question was posted but to answer your question more than likely your planetary gear is messed up. The planetary gear is that part of the transmission that take the single direction "clockwise" movement of the engine and convert it to "counter clockwise" motion
what to do if my reverse lights on my 1993 gmc 1500 truck wont work
the starter GMC Yukon?
The GMC Yukon is an American made car. The GMC Yukon is made at the Arlington Assembly plant in Arlington, Texas.
put new speakers in
The 1996 GMC Yukon brake lights work by receiving power from the brake light relay switch. The brake light relay switch is connected to the brake pedal.
The 2009 GMC Yukon has a V8 engine.
The 2012 GMC Yukon has a V8 engine.
The 2015 GMC Yukon has 16 valves.
The 2003 GMC Yukon has 16 valves.
The 2002 GMC Yukon has 16 valves.
The 2010 GMC Yukon has 16 valves.
The 2013 GMC Yukon has 16 valves.