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Old 11-23-2010, 05:55 PM
777stickman 777stickman is offline
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Re: 98 Tahoe 5.7 ecm/pcm relearn.

Never had to do this, but I'll relate what my '98 C/K service manual says.

1. Original knock sensor chip needs to be in the new VCM
2. Passlock needs to be reprogrammed.
3. CKP Variation Learn Procedure needs to be run. ( High-end scan tool required for this.)
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