Where, besides dealers, to get PCM updates - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat
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1992-1999 Series I L27 (1992-1994 SE,SLE, SSE) & Series II L36 (1995-1999 SE, SSE, SLE) and common problems for the Series I and II L67 (all supercharged models 92-99) Including Olds 88's, Olds LSS's and Buick Lesabres Please use General Chat for non-mechanical issues, and Performance and Brainstorming for improvements.

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Old 07-14-2011, 12:40 AM   #1
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Default Where, besides dealers, to get PCM updates

I recently decided to look around and see if there were any dealers that could re-program my PCM to fix the common '97 fuel sender issue.

I emailed a few local GM dealers a link to the relevant TSB, and luckily, they all came back and said the car was certainly not too old to be reprogrammed (as I expected anyway). However, they all wanted to charge me an hour'* labor for the task, since my car is long out of warranty, which for a blip in the gas gauge isn't worth the blip in my wallet.

But, on a whim, I plugged my VIN into calid.gm.com and if I read the data correctly, I'm lacking several updates regarding the fuel gauge, spark timing, throttle, cat diagnostics, transmission shifting, and manifold pressure.

So, a flash might be a worthwhile investment after all. Does anyone know any shops or people besides GM dealers that can download the updates and flash my PCM, hopefully without breaking the bank?
2007 Pontiac G5
1999 Pontiac Grand Prix GT - Stock engine ate transmission.
1997 Pontiac Bonneville SE - Cammed engine ate transmission.
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1997, 3800 series ii, bonneville, computer, control module, ecm, engine, flash, os, p0121, pcm, pontiac, se, software, sse, update

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