2003 tahoe reduced engine power

Discussion in 'General Chevy & GM Tech Questions' started by lloyd, Oct 23, 2011.

  1. lloyd

    lloyd New Member

    hey guys,i have a 2003 tahoe ,and every once in awhile it displayes reduced engine power,wont go over 5 mph,i have a scan tool and the code that comes up is P1516,any ideas on what would cause this and any possible solutions would be great any and all help would be greatly appreciated .


    99'HEARTBEAT MODERATOR Staff Member 5+ Years ROTM Winner 1000 Posts Platinum Contributor

    For the Trouble Code......P1516,

    Subject: SES Light And Reduced Engine Power DTC P0120 P0220 P1516 P2135 - keywords accelerator actuator APP blade body connector connection DTC L33 L59 LH6 LR4 LM7 LS1 LS2 LQ4 LQ9 module position reduce sensor #PIP3089B - (10/31/2006)

    Models: 2004-2006 Buick Rainer

    2005-2006 Cadillac CTS-V

    2003-2006 Cadillac Escalade

    2003-2006 Chevrolet Avalanche, Corvette, Express, Monte Carlo, Silverado, SSR, Suburban, Tahoe, Trailblazer

    2003-2006 GMC Envoy, Savana, Sierra, Yukon

    2003-2006 Hummer H2

    2005-2006 Pontiac GTO

    Equipped with a 4.8 5.3 6.0 or 7.0 V-8 Engine


    The following diagnosis might be helpful if the vehicle exhibits the symptom(s) described in this PI.

    A vehicle may be brought into the dealer for a reduced power message, and DTCs P0120, P0220, P1516, P2101, or P2135.

    The Throttle Actuator Control(TAC) Throttle Body Type Trouble Codes, may be caused by a loose wiring crimp at the throttle body connector, or a broken throttle body circuit.

  3. sgtsjj

    sgtsjj Rockstar 3 Years 1000 Posts

    welcome to the club and it looks like mike has you set up pretty well!

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