97 bonnaville surging with the torque convertor locked
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Certified GM nut
Joined: Feb 2003
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From: Georgia
Cool stuff eh....No it'll probably cost more than $25 but just know that thats how much it actually costed him to do it. The haggle is over how much his time and tools are worth 
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Joined: Jun 2004
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From: Glendale, AZ
so the update that would be done would be all those things listed? sounds like maybe that would help prolong the life of the UIM? this sounds like the cheapest route to try next, and i really believe it'* a pcm issue that'* been plaguing so many bonnies.
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From: Georgia
Originally Posted by macho_mike21
Can anyone besides a dealer do it?
Originally Posted by DrJay
If you decide to take it in to get it worked on know that because of a law the dealership ISN'T the only one with the capability to update it. Also, if the shop you take it to can do it don't let them charge you too much. It costs between $20-25 to get a 'one-day pass' to the GM information database and only a few mins to flash it.
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From: Pamana City, Florida
GM Vehicle Calibration Information webpage not working
I've tried the website several times and never get past the "Getting Calibration Information ......" screen 
Has anyone had any luck with this site?
Has anyone had any luck with this site?
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From: Pamana City, Florida
I tried that too and it didn't help. What did work was trying it at work this morning. It came right up. Might be a business hours only computer. Anyway, I called the local Chevy service dept. and got a quote of $70 for one hours labor, to upgrade/flash my PCM, though I can't see it taking more than 30 minutes. (EVERYONE at the local Pontiac dealership is named Richard Cranium, and they wanted $85. Last resort only!). What I'd like to know is... Has anyone done this had it fix their surging/slipping/whatever tranny?