Chevrolet Sonic Repair Manual: Ignition Transmission Lock Check
While parked, and with the parking brake set, try to turn the ignition to LOCK/OFF in each shift lever position.
- For automatic transmission vehicles, the ignition should turn to LOCK/OFF only when the shift lever is in P (Park).
- For manual transmission vehicles, the ignition should turn to LOCK/OFF only when the shift lever is in neutral.
On all vehicles, the ignition key should come out only in LOCK/OFF.
Contact your dealer if service is required.
Transmission Adaptive Functions
The 6T30/40/45/50 transmission utilizes a line pressure control system during
upshifts to compensate for the normal wear of transmission components. As the apply
components within the transmission ...
Other materials:
Forward Collision Alert (FCA) System
For vehicles with FCA, this system is intended to help avoid or reduce the harm
caused by front-end crashes. FCA provides a flashing visual alert and beeps when
approaching a vehicle directly ahead too quickly. FCA also provides a visual alert
if following another vehicle much too closely. The ...
How to Identify Plastic Parts
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Plastic parts can be identified by the SAE code, which is usually found on the
rear of the part, and/or by the characteristics of the plastic. Knowing the type
of plastic aids in selecting the proper repair materials and in selecting the proper
repair procedure.
Look for the SAE ...
Inspection/Maintenance System Check
Diagnostic Instructions
Perform the Diagnostic System Check - Vehicle
prior to using this diagnostic procedure.
Review Diagnostic System Check - Vehicle
for an overview of the diagnostic approach.
Diagnostic Procedure Instructions provides
an overview of each diagn ...
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