There are 5 screws located under the edge of the dash facing the front seats. There are two more screws located under the speaker covers. A flat blade screw driver can be used to pry up the speaker covers. Once all of these screws are removed, simply pull the dashboard cover toward you a few inches at which point it can be lifted out of the way. Removal of the instrument cluster is fairly obvious. There is a wiring harness that unplugs from the top. You have to squeeze the tabs on the connector and pry it up from the socket. After removing the four screws that hold it in place, be careful not to lift it too far because the shifter indicator (park, reverse, neutral, drive, etc.) is still attached. To completely free the instrument cluster, remove the two screws from the bottom of the cluster and gently remove the shifter indicator. At this point the cluster is free and can be further disassmbled if necessary or simply replaced.
The 1997 Buick Skylark computer is located behind the passenger side dashboard. You will need to remove the passenger side kick plate in order to access the computer.
The 1994 Buick engine control computer is located behind the passenger side dashboard. You will need to remove the glovebox in order to access the computer.
A 2004 Buick does not have a speedometer cable. The speedometer signal comes from electronic sensors.
there is a screw on either side of the dash where the doors open remove them and gently pull the dash out
Remove the fuel tank to gain access to it.
Speedometer cables can dry out over time. Remove the cable from the back of the speedometer, and lube the cable with graphite. This should fix the issue.
On a fuel injected Buick you must remove the fuel tank in order to access the fuel pump.
On the dashboard
Located in fuel tank - remove tank to access
Remove the entire headlight assembly to gain access to the bulbs.
Located in the fuel tank - probably have to remove for access
Located in the fuel tank - may have to remove for access.