SOURCE: Can I down load the codes from my 2001 chevy astro?
on a 2001 you need to go to any parts store and they can read the codes for you.. good luck keith..p.s. this service is free to the public..
SOURCE: 2001 astro chevy van 4.3 engines need to set the timing
The distributor in that engine can only be installed in one position. The hold down is built onto the distributor meaning when it is installed and the engine runs the computer is responsible for the timing. The distributor will move a little but won't correct major timing errors.
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