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I have an 02 C5 with a Mag SC and high hood from Lingenfelter. it makes about 525hp at the rear tires. I haven't had any trouble with the SC, and when I contacted Magnusen about an install manual just to keep as a reference, they were very responsive. The car is a screamer with a 6-speed...

I had similar, intermittent probs with my '02. I replaaced the stock Group 75 battery with the slightly larger Group 78 and probs vanished. Not sure if it was the old battery acting up or the new one having higher CCA, but no more probs...

Do you suppose plugging in a code reader would reveal anything in the test scenario I mentioned?

Sam, reread my first post. And the response that followed your last one. In my case, replacing the SWPS solved the problem. After other potential causes were ruled-out. To suggest that replacing the SWPS was just a coincidence and didn't fix the prob isn't realistic. If you want to validate...

If you stick to JUST what GM says and doesn't say, isn't that your first error? :) AH, if engaged, WILL disengage the cruise on a C5, no doubt about it. If TC does it, why wouldn't AH do it?? It's a logical safety feature that both TC and AH would disengage the cruise--and they do. Just...

A fault in the AHS would cause the cruise to disengage, "why wouldn't it?". The SWPS is part of the AHS and if giving a false reading to the AHS, would have disengaged the cruise. Safety feature. The pedal switches had already been adjusted before the SWPS was replaced, that wasn't the prob...

For a year or so, the cruise control in my C5 convertible would disengage for no apparent reason on a flat, smooth piece of road. Initially, no trouble codes were presented. However, as time passed, the cruise would disengage more frequently, until I had to turn-off the active handling system...

My 2002 convertible unfortunately has Specter Werkes C5R Lemans Style headlights. One of the Lexan lenses/covers is cracked and I'm looking for replacements, new or used. Would consider buying a complete kit, new or used, to get the Lexan covers. (Yes, I KNOW these lights are...

My 2002 convertible unfortunately has Specter Werkes C5R Lemans Style headlights. One of the Lexan lenses/covers is cracked and I'm looking for replacements, new or used. Would consider buying a complete kit, new or used, to get the Lexan covers. (Yes, I KNOW these lights are...

My 2002 convertible unfortunately has Specter Werkes C5R Lemans Style headlights. One of the Lexan lenses/covers is cracked and I'm looking for replacements, new or used. Would consider buying a complete kit, new or used, to get the Lexan covers. (Yes, I KNOW these lights are...

Very high. Obviously Delphi is as dead as the Vega. There must be a retrofit from a later model C5. Or perhaps a 1998? Buehler? Buehler? Anyone???

Dreemz: The part for a 99 must be different than later C5's (?). (You parts/tech gurus jump in anytime!) The Delco guys told me that the part is actually made by Bosch in Germany! Also, that module is actually two parts: the electronic brain and the hydraulic connection--two boxes...

Does anyone have some detailed instructions for removal (and replacement) of a C5 rocker panel? (They're %#@* glued to the frame rail, ya know.) My 2002 shop manual (Book 3) doesn't say much, just heat them and pry them off. And I didn't have success with a search here on the site. Surely...

Ken, thanks for reminding me to finish my fairy tale! Well, it initially failed the bench test after rebuilding the part, sooooo they had to re-rebuild it and retest and then it passed. So shipping took a little longer. After it was returned and installed it works great! The lifetime...

It all began with the TCS and ABS warning lights coming on in my 2002 'vertible. I checked codes and one code wouldn't reset/clear: TSC 1214 Solenoid Valve Open... Even discontected the battery, no change on reconnect. My mechanic plugged her in and said it was the EBCM (P/N 12216561). Chevy...

Thanks. It's very curious. I suppose it could be just a defect in the radio, but otherwise the radio and CD changer work fine. Never seen this in any of the many GM or other make cars I've owned over the past 30+ years, and no codes to suggest a source of the prob.

My '02 convertible's clock is haunted or something. Sometimes, not always, it shows a time that is several hours off. It may go for weeks or days showing the correct time, but then "picks" a time it likes. I have a brand new Delco G78 battery, so it's not a power problem I don't think. Has...

You DOUBT but don't know Grasshopper. Those party big-wigs over there are now driving Cadillacs MADE there. I don't know what they call them, but the look just like a CTS. Black of course. The party elite and emerging upper middle class there have money to burn and will be buying lots of...

C7 These guys make prototypes and fake prototypes all the time and test them everywhere, so the license plate doesn't mean much. Government Motors (GM) has changed a lot since the C6 rolled-out. They now earn over half their revenue from China and plan to increase investment in China and...

What is the consensus or everyone's experience with oil blow-by from the PCVs on C5s? I'm considering installing a small 2-3 oz. oil/air separator to keep the intake cleaner, but before I do, I'd like to hear from others. The car is an '02 with a supercharger, it has about 26K on the odo...