Question about 2005 Chevrolet Tahoe
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Posted on Jan 02, 2017
SOURCE: engine light on tighten fuel cap
you can try testing the vacuum purge solenoid, remove both lines and plug them, rescan ecm at 2000 rpm. if you have an interactive scanner, try to purge the solenoid manualy and watch for pressure drop! do you have acess to a smoke machine? good luck, marty
Posted on Jun 07, 2009
Large evap leak, most likely evap vent valve or broken,rotted or squished lines from fuelpump to canister or valve. Look for obvious bad lines if not very common for valve to go bad.
Posted on Jun 09, 2010
SOURCE: engine light was coming on
try disconnectin batt cables and touch them both together--if no relief then theres something complex--put a tech ll that runs a data stream for the solution--some caps are sensitive so replacin with and original may work
Posted on May 13, 2011
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