Inspect the balance shaft drive chain guides-(3,5, 8) for cracking or wear.Replace the balance shaft drive chain guides if wear exceeds1.12-mm (0.045-in) depth on the chain guidesurface.Inspect the balance shaft drive chain tensioner guide shoefor wear.
Replace the balance shaft drive chain tensioner guide shoe ifwear exceeds 1.12-mm (0.045-in) depth on thechain guide surface.
Inspect the balance shaft drive chain-(7) andsprockets-(2, 4) for wear.Inspect the crankshaft sprocket-(6) faces forsigns of movement.Inspect the alignment notch in the balance shaft for crackingor damage.Inspect the water pump-(1), crankshaft, andbalance shaft sprocket teeth and chain for signs of excessive wear,chipping, or seizure of the balance shaft drive chain links.Inspect the timing chain tensioner-(9) for damageor wear.#PIC5491D: OnStar Will Not Power Up - (Oct 8, 2013)
Subject:OnStar Will Not Power UpModels: 2006-2014 GM Passenger Cars and Truckswith OnStar (UE1) Gen7, Gen8, Gen9, or FCP1This PI was superseded to add STID / Station ID for identification. Please discardPIC5491C.Condition/ConcernA concern may be identified on a Gen7, Gen8, Gen9, or FCP1 VCIM as the ...