K 1500 Truck 4WD V8-5.3L VIN T (2000)
Throttle Body: Customer Interest
Throttle Body - Increased Accelerator Pedal Effort
File In Section: 06 Engine/Propulsion System
Bulletin No.: 00-06-04-007B
Date: February, 2001
TECHNICAL
Subject:
Increased Accelerator Pedal Effort (Replace Throttle Body)
Models:
1999-2000 Chevrolet and GMC C/K Pickup Models (Silverado and Sierra) with 4.8L, 5.3L or 6.0L V8 Engine (VINS V, T, U - RPOs LR4, LM7, LQ4)
This bulletin is being revised to include instructions on reading the Date Code, and added text on which Throttle Body Assemblies to replace. Please
discard Corporate Bulletin Number 00-06-04-007A (Section 04 - Engine Controls).
Condition
Some customers may comment on a higher than expected accelerator pedal effort from the idle position.
Cause
Condition may be caused by a tight throttle blade in the throttle body bore when in the closed position.
Correction
Notice:
DO NOT adjust the shipping air screw to rotate the throttle body blade away from the throttle body bore. Adjusting the shipping air screw
compromises the idle speed control, and may lead to other driveability concerns. Adjusting the shipping air screw may lead to reduced Idle Air
Control valve durability.
1.
Verify the cause for this condition is not a damaged or binding throttle cable.
