The headlamp wiring is protected by fuses. Should the headlamps fail to function, have the headlamp system checked right away.
Chevrolet Cobalt Service & Repair Manual. Timing Chain Tensioner R & R
1.
Disconnect the negative battery cable.
2.
Remove the camshaft cover.
3.
Remove the timing chain tensioner,
Fig. 1.
4.
Remove the seal from the tensioner.
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