tried to scan my friends truck to change his speedo, and it wont read the tcm. says Security Access Denied - Invalid Authorization Code. any help? its a 5.3 with a 6speed.
the truck
tried to scan my friends truck to change his speedo, and it wont read the tcm. says Security Access Denied - Invalid Authorization Code. any help? its a 5.3 with a 6speed.
the truck
Last edited by zachsb3; 07-23-2009 at 11:43 PM.
screenshot,
Pull a log and send it along with your file to support.... they may have to add the OS pair into the software with that code coming up. Happened to me with an '09 Envoy Denali as well.
Charlie
2008 GMC Sierra Crew Cab SLT "All Terrain" 4WD
2009 GMC Envoy Denali 4WD
You need the latest beta to read out most 2009 applications.
It doesn't have to be perfect, it just needs to be done in two weeks...
A wise man once said "google it"
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