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Astro 'crankshaft variation relearn' problem
Hey everyone. I have a '04 Chevy Astro van, 4.3, 2wd, auto that refuses to relearn the crank variation. I recently replaced the pcm for a charging problem and have run the relearn procedure several time with a Genisys scantool to remove the po315 but I'm not h... Login to read more. 
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19 Replies Received
19 Replies Received
| Engine | 4.3 L |
| Trans | 4-speed Automatic (Electronic) |
Vehicle Data
2004 Chevrolet Astro 4.3L
| Engine | 4.3 L |
| Trans | 4-speed Automatic (Electronic) |
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