Cluster panel acting sporatic

It's a short in the instrument cluster.
I had the same problem with my 2004 XUV.
It started in early December of 2007.
Intermittent manifestations, than more persistent.
Took it to the GMC Dealer --
Of course, the Truck wouldn't do it's tricks for the Tech.
They replaced the ignition switch and sent me home.
It got progressively worse.
I waited until I was sure it would do it for the tech.
Took it back in to GMC Dealer--
It's a short in the instrument cluster.
They needed to replace the entire cluster.
I bought an extended warranty when I bought the truck.
The warranty is still in effect --
So I only had to pay the $100 deductible.
No Idea what it might cost otherwise.

The stepper motors for those indicators are bad, it is common problem. The cluster can be repaired if you are handy with a soldering iron or you can send it out for repair, check for vendors on Ebay. The stepper motors are available on Ebay as well.

this is the exploded view of tailgate https://www.gmpartscenter.net/v-2004-gmc-envoy-xuv--sle--4-2l-l6-gas/body--tailgate this is removal and working on an xuv https://www.youtube.com/watch?v=MLQLAD8xOPk

the insterment cluster might be covered by warranty GM had some problems with the clusters, you need to have your local GM deailer run you vin# to see if it is under warranty,the door ajar light is probabley just a door latch switch it should not be thet expenceve to repair, mabe $100-$150 that is a lot less then a new suv. i dont know wich seal so i cant comment on that but in this day and age 100,xxx in just geting broke in the truck still has allot of miles left in it.

if it auto transmission , the ratio changes and the speedo reading is affected by the VSS sensor ( around $100 from reports)
if the transmission is running well other than that it will not need a transmission just and transmission oil change
suggest that you find an accredit professional transmission shop and have a proper diagnosis done

More than likely the throttle body needs cleaning

i would say it's long overdue. i would think the manufacturer would recomend changing the trans fluid at 25,000-30,000 miles. the owners manual will have regularly scheduled maintenance routines listed.

cluster in this truck is bad it is a commun problem.

mind did the same thing had it in the shop they replaced the instument cluster, It took three time before we got it finely fixed.

ours did this, it was the guage cluster that went bad. It's about $600 to replace