Ignition coils, crankshaft and camshaft sensors, MAF and MAP sensors, relays, harnesses and motors to General Motors original specification.
Sensors do not simply pass or fail. A crankshaft position sensor with a slightly different air gap tolerance or a mass airflow sensor with a different transfer function returns values that sit inside the plausible range and are still wrong, which produces a driveability complaint with no stored code. This is where original specification matters most and is hardest to verify by eye. Every sensor we supply is manufactured to GM's electrical characteristic, not merely to the same connector and housing.
The module trusts its sensors absolutely. A drifting sensor that never sets a code still moves fuel trim and quietly costs fuel and power.
Replacing a sensor because its code is stored is the most expensive habit in diagnostics. A P0300 series misfire is a symptom, not a coil verdict — confirm with per-cylinder data before parts are ordered.
We supply Electrical & Sensors components across every General Motors division:
Not necessarily. If the vehicle has high mileage and one coil has failed, replacing the set on that bank is reasonable preventive work, but a single failure on a low-mileage engine is often just that.
Because the sensor is reporting a value that is wrong but plausible. The module has no basis to flag it. Comparing live data against the expected value for the operating condition is what identifies these.
Send the VIN and a description. We will identify the correct OE part and quote it back to you.
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