Timing the High Feature V6 Engine

The following models offer the available 0.043 in. shim and the 5 screw Aisin Stage Two Timing high feature 3.6L V6 engine (RPO LY7, actuators use a 0.063 in. shim. LLT), 2.8L V6 engine (RPO LP1) or 3.0L The engine will need to be rotated 115 V6 engine (RPO LF1, LFW): 2007-2011 Stage One Timing degrees clockwise for stage two timing. CTS, SRX, STS, Acadia, Lacrosse, Allure The marks should align dot to To set the timing on a high feature V6 (Canada only); 2007-2009 G6, AURA; dot. Tool EN 46105-2 or EN 48383-2 engine, start with the engine in stage one 2007-2010 OUTLOOK; 2008-2009 should fit easily on the rear of the on position with tool EN 46105-1, Camshaft Torrent; 2008-2011 Enclave, Malibu, the left bank of the engine. Locking Tool, or EN 48383-1, Camshaft Equinox; 2008-2010 VUE; 2010-2011 Retaining Tool, on the left bank, or bank 2. Camaro; and 2011 Traverse. The circular timing marks on the camshafts The high feature V6 engine family features should be aligned as shown. a camshaft drive system that consists of a primary timing drive chain driven by the crankshaft sprocket. The primary timing drive chain drives two intermediate drive shaft sprockets. Each intermediate drive shaft sprocket drives separate secondary timing drive chains, which drive the respec- tive head's intake and exhaust camshaft position actuators. The following supplemental information may be helpful when timing the high feature V6. Refer to #PIP4384E for addi- tional details and to the appropriate Service Information for complete timing In stage two position, the crankshaft marks procedure information. In stage one position, the circular timing should align dot to dot. marks on the camshafts should be aligned. For additional information, view video EN 48383-3 should be installed on the 10208.01D, January 2008 Emerging right bank, or bank 1. The triangular marks Issues, from the Common Training Website Stage one primary chain alignment for the should be aligned. (U.S.). In Canada, view Tech Assist video crankshaft and the left intermediate gear is 16038.01W, Timing the High Feature 3.6L shown below. The intermediate gear has a V6 Engine, on the LMS website and a triangular shaped timing mark that aligns related video on the GM GlobalConnect with the painted link and the crankshaft Service Library under Technician has a dot-to-dot alignment. Resources >TAC Talk Video Help. Keep these items in mind before beginning the timing procedure: • In a front-wheel-drive vehicle, it may be easier to remove the engine before b e g i n n i n g . • When removing the front cover, be sure to remove the belt tensioner and all the bolts. Damage may occur to the block if this procedure is not followed. The left camshafts will be aligned when in stage two timing position. • When removing the front cover, do not pry against or strike the actuators. This will cause damage to the reluctor or The painted link on the right intermediate a c t u a t o r . shaft should be aligned with the hole in the The intermediate gear has a triangular rear gear. • Intake cam actuators have marks on them shaped timing mark that aligns with the for the Right Bank (R) and the Left Bank painted link and the crankshaft has The left camshafts will be aligned as shown (L). They must be positioned respectively. a dot-to-dot alignment. when in stage two timing position. •Be sure to note the orientation of the in- jector wiring harness. The harness with The right intermediate gear has a triangu- If there are any concerns in identifying the connector should come out on the front lar mark that aligns with the painted link. correct location for the camshafts, check side of the engine. If installed backwards it the number stamped in the rear of the will cause misfires and/or fuel trim DTCs. Remove EN 46105-1 or 48383-1 from the camshaft — RI is right intake, RE is right left bank. exhaust, LI is left intake and LE is left • 4 screw Delphi and 5 screw Aisin cam e x h a u s t . actuators are interchangeable, but will require the correct shim behind them when Thanks to James Bloss applicable. 4 screw Delphi actuators use a

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