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No more sticking gas pedal. Thanks for your info. = )
EVAP - MIL ON/Engine Misfiring & DTC P0300 Stored
File In Section: 06 - Engine/Propulsion System
Bulletin No.: 00-06-04-024
Date: June, 2000
TECHNICAL
Subject:
Engine Misfire, Water in Fuel, Service Engine Soon Lamp illuminates, DTC P0300 Set ( Replace EVAP Canister Vent Hose Asm/Replace EVAP Canister If Necessary)
Models:
1999-2000 Chevrolet and GMC C/K Pickup Trucks (Silverado and Sierra) Built Prior to August 31, 1999
Condition
Some drivers may comment about the Service Engine Soon lamp illuminating. The Powertrain Control Module (PCM) may have stored a Diagnostic Trouble Code (DTC) P0300, Engine Misfire Detected. The engine may be exhibiting a misfire, possibly in the # 7 and # 8 cylinders. This condition may also affect the six cylinder models. This condition may be more prevalent in areas with high amounts of rainfall.
Cause
Diagnosis of the fuel system may reveal the presence of water, possibly in the fuel rail near the # 7 and # 8 fuel injector. Water entering through the evaporative emission (EVAP) canister vent solenoid may cause this condition. Because of this, an engine misfire may develop.
Correction
A new EVAP canister vent hose assembly, P/N 15759042, that includes the valve and the solenoid has been developed to correct this condition.
The new solenoid has a revised mounting bracket and a sealant has been applied to the top lid seal surface of the solenoid to address water intrusion. Use the procedure and the part numbers listed below.
If standard diagnostics do not lead to the resolution of the misfire, do the following steps:
1. Remove the fuel rail at the # 7 and # 8 fuel injector from the engine and drain the fuel into a suitable container. Inspect the drained fuel for the presence of water. Refer to the Fuel Rail Assembly Replacement procedure in the applicable Service Manual.
2. If the presence of water is detected in the fuel rail, remove the fuel tank and inspect the fuel for the presence of water. Refer to the Fuel Tank Replacement procedure in the applicable Service Manual.
3. If water is present in the fuel tank (other than from a water enriched fuel fill), replace the EVAP canister vent hose assembly. Refer to the EVAP Vent Valve Replacement procedure in the applicable Service Manual.
4. Disconnect the EVAP canister line connections and remove the canister. Inspect for the presence of water at the canister line connections and inside the canister. If water is present, replace the EVAP canister. Refer to the EVAP Canister Replacement procedure in the applicable Service Manual.
5. Flush and clean the fuel system. Refer to the Fuel System Cleaning procedure in the applicable Service Manual.
Pdowney
:sick:
Toyota, GM Top J.D. Power Quality Survey (Inside Line)
Steve, Host
99 Burb 1500 4X
2000 Trail Harbor -- 380 tongue weight, 4160 dry and 7830 loaded. It pulls like a toy wagon with mine.
Steve, Host
LMMAN
What are my most economical options to resolve this issue? :confuse:
tidester, host
Oh, any other performance enhancing suggestions would be greatly welcomed.
serpentine belt, water hoses, PCV valve, shocks, water pump. Do any or all of these make sense? Other suggestions?
Question: I have heard of many similar cases of the fuel pump issue and failures while driving on interstates thus no power steering or brakes - SAFETY ISSUE! The BCM is also a failure that just shouldn't happen ( you still have brakes but no ABS control). Is anyone aware of a TSB, warranty, recall, action being taken to get GM to cover these issues?
Also I need a new driver seat for this truck, does anyone have a direct bolt in for the 1994 Chevy Suburban?