I have a 04 envoy slt xl won’t start none of gages work only battery light comes on, has full battery tho & won’t shift out of park

SOURCE: 04 Trailblazer Will not shift out of park.

Sounds like the cable from the shifter to the transmission probable snaped. It happened to me at the emission inspection station. What a nightmare. To check this you will need some help. Have someone set in the car and apply the brakes as well as the emergency brake just incase. Get under the truck and find the cable from the shifter to the transmission. Have the person in the truck move the shifter lever from park to another gear. If the arm where the cable attaches to the transmission does not move when the lever is moved it is the cable. They are relitively cheap and you should be able to replace it yourself.

SOURCE: battery and brakes light coming on

i don't know about the temp gauge,but i have a 2000 montero sport,and when my brake light and battery light came on,my alternator was going out.another sign for the alternator is the radio going off every once in a while,and then coming back on.

SOURCE: 2007 yukon xl battery dead recharged battery will

We had the same issue with our 2007 Yukon Denali XL. Died on us twice after sitting for short periods of time; once we watched a DVD with the engine off and battery died within 10 minutes. The dealership kept it overnight to troubleshoot why the battery died so quickly. They said the radio was "pulling" too much from the battery. (They supposably fixed it) But again a few days later the battery died again after sitting overnight. We brought it back to the dealership and they brought in a GMC "expert" to replace the entire DVD/CD/Navigation system. They also replaced our battery with a much larger battery, similar to the ones that GMC puts in there diesel trucks. They had our Denali for 5 days, but it appears to be fixed now.
Getting it fixed correctly wasn't without headaches, but it was all covered under warranty, including the battery. And they are updating the nav w/ the new edition disc as well for no charge.

SOURCE: 2001 Yukon XL SLT 4 speed Auto Transmission shift problem!

Sam,

I would start with a transmission fliud and filter service.

I would then have the trasnmission checked out by a transmission shop. The transmission most of the time has the direct drum band is starting to go. The shops can rebuild it no problem, This is a very common failure wiith the trasnmission.

Good Luck

Testimonial: "Thanks alot richtko94'! I'll try that!"

SOURCE: My 2001 Oldsmobile Alero won't shift out of park.

Before you go too far, your problem might be as simple as mine was. The gear shift knob had slipped and was not down far enough on the shaft to engage the release mechanism.