check for a faulty speed buffer module
speedometer is not working 91 astro van other instruments are
Where is the temp sensor on a 91 Chevy astro
My 89Chevrolet astro van digital speedometer stop working. How do I fix it
where is the oxygen sensor in a 2004 astro van
heater sensor circuit Chevy astro 2000
Broken speed cable. probably doesn't have a cable it works off of a vehicle speed sensor. it could be bad
location of 3 sensor of 97 Chevy astro van?
On a 2004 Chevy Astro, the camshaft sensor is located in the front of the engine. It is on the left side of the timing cover behind the camshaft sensor.
no MAP sensor, just mass air flow sensor
That year did not USE a Crank sensor.
Try replacing the distributor cap.
Try replacing the plugs and wires