On the 20011 GMC Terrain with the 3.0L engine, the P0017 points to a problem with the crankshaft and exhaust camshaft for bank1 being out of sync. This is more commonly due to a faulty Camshaft Position Actuator Solenoid Valve. This valve plays a role in the variable valve timing system. This system advances/retards the timing to provide the best fuel economy and performance for any given driving condition. When the valve isn’t working properly, the cam-crank will be out of sync. More times than not, then get clogged and do not move to their maximum expected positions. The Bank1 Exhaust Solenoid Vale is located on the passenger’s side of the engine, towards the rear, about midwya down. Carefully inspect the electrical connector and wire harness for any loose, broken or damaged wires. If no problems are found, replacing the Camshaft Position Actuator Solenoid Valve should solve the problem.
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