pinging hard

[HARLEY]

HI THERE GUYS NEED SOME ASSISTANCE, SINCE AUG 4 NOTICED MY SUV ENGINE PINGING UNDER LIGHT LOAD, NOW IT IS AUG 7 AND PINGING HAS GOTTEN A LOT WORSE, NOTICE TIMING WAS GOING UP IN TO THE 50 DEGREE RANGE WHEN AT PARTIAL THROTTLE UNDER LIGHT TO CRUISING LOAD, WOULD NOT START PINGING UNTILL 3500 RPM AND HIGHER AT WOT BUT WOULD GET LOUD, NOTICED AT PARTIAL THROTTLE UNDER LIGHT LOAD KNOCK WAS GOING AS HI AS 6.24 DEGREES, TRIED TO RETARD TIMING DID NOT HELP, REMOVED 93 TUNE AND INSTALLED 87 TUNE STILL NO CHANGE, INSTALLED FACTORY TUNE BACK IN AND TRIED STILL NO CHANGE, NO CHECK ENGINE LIGHT WAS COMING ON, AND NO INACTIVE CODE IN TUNER.
I LIVE IN REDDEER ALBERTA, CANADA. AIR TEMP HAS BEEN APPROX 28-32 DEGREES C. HERE FOR ABOUT THE LAST MONTH OR SO. ALL ENGINE GAUGES READ NORMAL.
MY TUNER SN# ON THE SIDE OF THE TUNER IS 160948( ON THE SCREEN IT READS 00031).
MFG DATE 09/02
SOFTWARE REV 2.13
HARDWARE REV 1.01
BIOS V-6.01
MY SUV IS A 2001 TAHOE, 5.3L, C.A.I. HELIX 1" T.B. SPACER, DYNAMAX 3" CAT BACK EXH.
IF YOU REQUIRE MORE INFO PLS FEEL FREE TO CONTACT ME ON MY CELL (IF YOU HAVE ACCESS TO IT ON MY PERSONAL FILE).
THANK AGAIN AND WILL BE WAITING TO HEAR FROM SOME ONE SOON.
HARLEY.

[HARLEY]

PS THAT 6.24 DEGREES IS MY KR (BUT IT DOES BOUNCE AROUND A BIT).

[HARLEY]

PSS MY PREDATOR IS U 7198

[mikel]

HI THERE GUYS NEED SOME ASSISTANCE, SINCE AUG 4 NOTICED MY SUV ENGINE PINGING UNDER LIGHT LOAD, NOW IT IS AUG 7 AND PINGING HAS GOTTEN A LOT WORSE, NOTICE TIMING WAS GOING UP IN TO THE 50 DEGREE RANGE WHEN AT PARTIAL THROTTLE UNDER LIGHT TO CRUISING LOAD, WOULD NOT START PINGING UNTILL 3500 RPM AND HIGHER AT WOT BUT WOULD GET LOUD, NOTICED AT PARTIAL THROTTLE UNDER LIGHT LOAD KNOCK WAS GOING AS HI AS 6.24 DEGREES, TRIED TO RETARD TIMING DID NOT HELP, REMOVED 93 TUNE AND INSTALLED 87 TUNE STILL NO CHANGE, INSTALLED FACTORY TUNE BACK IN AND TRIED STILL NO CHANGE, NO CHECK ENGINE LIGHT WAS COMING ON, AND NO INACTIVE CODE IN TUNER.
I LIVE IN REDDEER ALBERTA, CANADA. AIR TEMP HAS BEEN APPROX 28-32 DEGREES C. HERE FOR ABOUT THE LAST MONTH OR SO. ALL ENGINE GAUGES READ NORMAL.
MY TUNER SN# ON THE SIDE OF THE TUNER IS 160948( ON THE SCREEN IT READS 00031).
MFG DATE 09/02
SOFTWARE REV 2.13
HARDWARE REV 1.01
BIOS V-6.01
MY SUV IS A 2001 TAHOE, 5.3L, C.A.I. HELIX 1" T.B. SPACER, DYNAMAX 3" CAT BACK EXH.
IF YOU REQUIRE MORE INFO PLS FEEL FREE TO CONTACT ME ON MY CELL (IF YOU HAVE ACCESS TO IT ON MY PERSONAL FILE).
THANK AGAIN AND WILL BE WAITING TO HEAR FROM SOME ONE SOON.
HARLEY.

The fact that you reinstalled the factory tune, and are still having the issue says that this is not a tune related issue.
I would get this vehicle to a good mechanic and have it looked over thoroughly.

Thanks