GM Service Manual Online
For 1990-2009 cars only

4.3 L35 LU3 Rattle or Buzz Noise from Engine - kw cable IPC PCV throttle valve

Subject:4.3 L35 LU3 Rattle or Buzz Noise from Engine

Models:.



When servicing the vehicle with the VIN you entered, the following diagnosis might be helpful if the vehicle exhibits the described symptoms.

Condition/Concern:

Rattle or buzz noise from the engine compartment. Some customers may think the noise emanates from the I/P.

Recommendation/Instructions:

Verify the PCV valve is not contacting the accelerator cable. If it is either reroute the accelerator cable or insulated with a rubber hose.

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Please follow this diagnosis process thoroughly and complete each step. If the condition exhibited is resolved without completing every step, the remaining steps do not need to be performed. If these steps do not resolve the condition, please contact GM TAC for further diagnostic assistance. This diagnostic approach was developed for the vehicle with the VIN you entered and should not be automatically be used for other vehicles with similar symptoms.

Models:

(97 Chevrolet S-10) and (97 Chevrolet Blazer) and (97 GMC Sonoma) and (98 Chevrolet S-10) and (98 Chevrolet Blazer) and (98 GMC Sonoma) and (99 Chevrolet S-10) and (99 Chevrolet Blazer) and (99 GMC Sonoma) and (00 Chevrolet S-10) and (00 Chevrolet Blazer) and (00 GMC Sonoma) and (01 Chevrolet S-10) and (01 Chevrolet Blazer) and (01 GMC Sonoma) and (02 Chevrolet S-10) and (02 Chevrolet Blazer) and (02 GMC Sonoma) and (03 Chevrolet S-10) and (03 Chevrolet Blazer) and (03 GMC Sonoma) and (04 Chevrolet S-10) and (04 Chevrolet Blazer) and (04 GMC Sonoma)

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