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No Cats. I have been ignoring it but it is so annoying.
Long story short, I have attempted to clear CEL and SDL with steps recommended by F-Chat members without success. Multiple attempts being...
I had a similar noise after my torque tube was rebalanced and reinstalled. It turned out that a nut was not tightened and was very expensive for...
I've got a 99 456M GTA. Hot Springs is not too awfully far from Germantown. Perhaps when the weather straightens out.
Any update as I am experiencing P0507 and CEL with history of unprovoked idle surges as you described in my 1999 456M GTA?
CCUs are accessible under the hood hinges on my M model. Very easy to install the Dummy Load SDL Bypass by Technistrada.
Excellent! Many thanks for the reference.
Where on a 1999 456M GTA is the CCU located? Is it accessible under the hood or underneath the frame?
I'm mid 60's, quirky and love my 99 456MGTA!
Placed car in PARK, then within a few seconds the revving to 2200 began
Both have been changed within past 2 years when valve guides were replaced.
Recently after short drives, upon putting my 456M GTA in park, the engine revved to 2200 rpm several times for 5-8 seconds returning to idle rpm...
Basis of transmission is GM 4T80E with a custom designed bell housing (to account for placement under the back seats). Majority of internal parts...
Just as I expected. Thanks.
Please share any experiences with this facility. Reviews on website are not too favorable.
GPS results: Speedometer accurate at speeds under 60 mph; Actual speed 5 mph greater than speedo reading over 60 mph. Only tested to speedo...
Lubbock Gasket and Supply was able to fabricate an "unavailable" transmission gasket for me after an exhaustive search. I found them very easy to...
Thanks; will do the math!