How do you set the speed on this truck,I have reset the ECM/TCM no help,he has 285/75/16 and is 5 mph off ? Have EFI ?
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Need hypertech/efi cant do
How do you set the speed on this truck,I have reset the ECM/TCM no help,he has 285/75/16 and is 5 mph off ? Have EFI ?
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2002 GMC 2500HD 4x4 SCLB STOCK MOTOR WITH TOMAN TUNING,FASS 150, M/A TRANS,11.90 ON A GOOD DAY IT'S MY WORK TRUCK,19 TO 21 MPG WITH ME DRIVING,THE TRUCK (OLD RED )HAS 909,000 MILE AND LOVING IT,285/75/16
messure the accual tire size (height) and enter that
285 should equall about 33 but have seen some as low as 31.5 inch tall
97 2500 ecsb 5.7l/4l80e/4x4 411 pcm /thorley tri-y's/dual super 40's with x (catless)/aem cai/msd 6a and coil/zz4 cam/beehive spring/lm-1
stock sucks
Put in 37" still 5 mph off ?
2002 GMC 2500HD 4x4 SCLB STOCK MOTOR WITH TOMAN TUNING,FASS 150, M/A TRANS,11.90 ON A GOOD DAY IT'S MY WORK TRUCK,19 TO 21 MPG WITH ME DRIVING,THE TRUCK (OLD RED )HAS 909,000 MILE AND LOVING IT,285/75/16
The speedometer is 5 MPH off at what speed - 50 , 100, etc. ? Speedometer error is a percentage not a constant.Originally Posted by JST
Post the original (not modified) ECM and TCM tunes, as well the tire manufacturer and model line (i.e. Goodyear manufacturer - RSA model tire - etc.) for the 285/75-16 tires.
Myself or another Forum member will take a look at it for you ..
Regards,
Taz
5 mph at 70 and 3 mph at 35
2002 GMC 2500HD 4x4 SCLB STOCK MOTOR WITH TOMAN TUNING,FASS 150, M/A TRANS,11.90 ON A GOOD DAY IT'S MY WORK TRUCK,19 TO 21 MPG WITH ME DRIVING,THE TRUCK (OLD RED )HAS 909,000 MILE AND LOVING IT,285/75/16
RUSS ROBERTS.tun RUSS ROBERTS TRANS STOCK.tun Had 245/75/16 and now 285/75/16
2002 GMC 2500HD 4x4 SCLB STOCK MOTOR WITH TOMAN TUNING,FASS 150, M/A TRANS,11.90 ON A GOOD DAY IT'S MY WORK TRUCK,19 TO 21 MPG WITH ME DRIVING,THE TRUCK (OLD RED )HAS 909,000 MILE AND LOVING IT,285/75/16
The ECM tune you posted has had the Speedometer parameters altered - need an unaltered stock version. Also need the tire manufacturer and model for the new 285/75-16 tires - to then look up precise tire data. Once I have these pieces to the puzzle, I will try and help out.
Getting late here - probably won't check the Forum again until Monday.
Regards,
Taz
BFG tires,I have tuned 126 trucks to date and set the speedo on 80 % of the trucks,I check it with my GPS after setting it,if you look on the forums a lot of trucks can not get the speedo set with EFI (newer gas trucks) I did reset the H0136 from 370 to 333 no help,2 gas trucks in the area had a tech 2 set it after thay gave up with EFI.
2002 GMC 2500HD 4x4 SCLB STOCK MOTOR WITH TOMAN TUNING,FASS 150, M/A TRANS,11.90 ON A GOOD DAY IT'S MY WORK TRUCK,19 TO 21 MPG WITH ME DRIVING,THE TRUCK (OLD RED )HAS 909,000 MILE AND LOVING IT,285/75/16
Try these.
Head Calibrator
Gwatney Performance Innovation
Jacksonville, AR 501-982-2102
Thank you,let you know
2002 GMC 2500HD 4x4 SCLB STOCK MOTOR WITH TOMAN TUNING,FASS 150, M/A TRANS,11.90 ON A GOOD DAY IT'S MY WORK TRUCK,19 TO 21 MPG WITH ME DRIVING,THE TRUCK (OLD RED )HAS 909,000 MILE AND LOVING IT,285/75/16
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