Probably the stepper motors that control the needles. Common failure and can be ordered on eBay and replaced. We have a how to with pics for the procedure on our enthusiasts forum.
www.trailvoy.com Yes your Ascender is a relative of ours!
speedometer not working can you help
Ascender Corporation was created in 2004.
How do you remove the interior rear door panel on a 2004 isuzu ascender?
where are the spak plugs located on the 2005 ascender?
Vehicle Speed sensor disconnected
there is a recall for this
where is speedometer sensor on 2004 avalanche
245/65R17
the dashboard cluster could have broken. That happened to my 2004 trailblazer and I had to get it replaced
According to my 2006 Ascender owners manual the oil capacity with filter is 7 quarts. This is for the 2006 4.2
A 2004 Buick does not have a speedometer cable. The speedometer signal comes from electronic sensors.
Behind the glove box.