C 1500 Truck 2WD V8-5.3L VIN T (1999)
Throttle Body: Customer Interest
Throttle Body - Excessive Accelerator Pedal Effort
File In Section: 06 - Engine/Propulsion System
Bulletin No.: 00-06-04-007A
Date: June, 2000
TECHNICAL
Subject:
Increased Accelerator Pedal Effort
(Replace Throttle Body)
Models:
1999-20O0 Chevrolet and GMC C/K Pickup Models (Silverado and Sierra) with 4.8 L, 5.3 L or 6.0 L V8 Engine (VINS V, T, U - RPOs LR4, LM7,
LQ4)
This bulletin is being revised to add additional part numbers and clarify labor operations. Please discard Corporate Bulletin Number 00-06-04-007
(Section 06- 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.
