Type: Posts; User: biggmachz
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i just installed my blackbear tune last week via autocal, 08 avalanche 5.3 ltz
had a hypertech programmer for 3 years ....
there is NO COMPARISON!
i'm not sure about the hp gain, but it pulls...
part # 32004
2007-2008 GM Gasoline
Trucks/SUVs 4.8, 5.3, 6.0L
i have an 08 avalanche with a 5.3 90,000 km
it recently started to idle rough and misses at highway speed.
check engine light is not on and no codes.
guess i'll change plugs and wires before it...
08 ltz here
08 avalanche ltz
both front door lock actuators replaced out of pocket
07-11-2011, 03:01 PM
i owned my ave for 3 years today! only had the back window out once!
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