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Cadillac 1997277 Valve,Evap Emission Canister Purge Solenoid

1999-2004 Cadillac Escalade

GM 1997277 Valve,Evap Emission Canister Purge Solenoid
  • Part Description
    VALVE, Fuel Tank Evaporator/Purge Control
  • Manufacturer
    General Motors
Customer Questions & Answers
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  • Product Specifications

    BrandGenuine Cadillac
    Manufacturer Part Number1997277
    Part DescriptionVALVE, Fuel Tank Evaporator/Purge Control
    Item Dimensions4.6 x 2.9 x 2.9 inches
    Item Weight0.50 Pounds
    ConditionNew
    Fitment TypeDirect Replacement
    ManufacturerGeneral Motors
    SKU1997277
    WarrantyThis genuine GM part is guaranteed by GM's factory warranty.
    Shipping & ReturnShipping Policy Return Policy
    Warning: California’s Proposition 65
  • Vehicle Fitment

    Year Make Model Engine Important vehicle option details
    2002-2004, 1999-2000 Cadillac Escalade8 Cyl 5.7L1 TON CREW CAB, 1/2 TON, 3/4 TON, 4 DOOR 1/2 TON, CLASSIC 4 DOOR 1/2 TON, CREW CAB 1 TON, EXT 1/2 TON, EXTENDED CAB 1 TON, EXTENDED CAB 6'6" BOX 1/2 TON, EXTENDED CAB 6'6" BOX 3/4 TON, EXTENDED CAB 8' BOX 3/4 TON, K2500 CREW CAB, K3500 CAB CHASSIS 135.5, K3500 CAB CHASSIS 159.9, REGULAR CAB 1 TON, REGULAR CAB 3/4 TON, YUKON/DENALI/ESCALADE

Customer Questions & Answers

Q:
I am wonder if this is complete and correct part for my vehicle. Posted by GMPartsGiant Specialist
A:
You can Select Your Vehicle to check if 1997277 fits your vehicle.
Posted by GMPartsGiant Specialist
Q:
What is the role of the fuel evaporative emissions control (EVAP) system,Purge Valve,Fuel Pressure Sensor and Canister for Chevrolet C1500 and K1500? Posted by Customer
A:
The role of the evaporative emissions control (EVAP) system is to manage fuel vapors by absorbing them from the fuel tank and then releasing into the engine's intake system where they will mix with incoming air/fuel mixture. The canister filled with activated charcoal for vapor absorption, purge valve, vent valve, fuel tank pressure sensor, fuel tank itself, and vapor and purge lines are some of the key components that make up this system though there might be slight variations in their components through different years and applications. The charcoal canister is a sealed carrier entered via a check valve by fuel tank vapor on its way through a second hose comprised of capillary slits which have been called vapor hose in order to let out or activate coal store the vapors. When certain conditions are met for instance; engine running or reaching preset temperature, the ECM/PCM opens both the purge valve as well as vent valve. Consequently, intake manifold vacuum drawn through a purge hose causes fumes from canister while normal engine operation consumes this fumes inside intake manifolds including combustion chambers. The EVAP purge solenoid is modulated by ECM/PCM to control the rate at which vapors flow from the canister to intake manifold. In cold conditions and during a hot start time delay, this solenoid remains de-energized according to ECM/PCEM. After warming up to operating temperature range specified for it, engine control module/ power control module (ECM/PCM) regulates purging of vapors into intake manifold based on engine running conditions. By varying energization time of solenoid OBD II models cycle purge valve control solenoid from 5 to 10 times per second for adjusting a flow rate. In such case PCM opens EVAP canister purge valve and closes vent valve during cold engine startup thereby creating vacuum throughout EVAP system after 1996 -2000 OBD-II models. PCM closes purge valve after reaching vacuum level, sealing the system and monitoring fuel tank pressure sensor voltage to set diagnostic code in case of leak detection. In these models, there is also a fuel tank pressure sensor that sends back a signal voltage to the PCM reflecting air pressure inside the fuel tank for detecting leaks. Of note, this system is protected by a five-year/ 50,000-mile warranty as mandated by federal law. In troubleshooting the system, start by checking hoses for damage, disconnection or misrouting. Repair any faulty hoses or replace them as required. For pre-EVAP controls model years check charcoal canister, purge control valve and vacuum hoses for possible problems. Late models contain electronic purge control so it is important to verify related fuses and wiring integrity pertaining to the purge and vent valves. These valves are typically closed with vapor flow starting following activation of PCM's solenoid. Although some limited testing may be performed, a scan tool must be used for thorough examination. If these initial checks do not identify the problem, consult a dealer service department or qualified repair shop. When replacing components, late model EVAP system hoses are equipped with quick-connect fittings requiring a twisting motion to loosen the seal before disconnection is made. The EVAP canister's location varies with the year and application while its removal involve disconnecting these hoses and removing bracket mounting bolt. During removal of early model vehicles, on top of electrical connector detachment one has to remove connecting lock tab on hose then take away mounting nuts/bolt from its intake manifold place or charcoal canister (Allen 83). On 1996-2000 models vent valve is mounted on bracket close to fuel tank which means raising of vehicle will have to occur since you should disconnect electrical connector from it then remove hose next release retainer in order displace vent valve from bracket (Allen 83). In 1996 through 2000 only, fuel tank pressure sensor is located on the fuel pump module hence removal of fuel tank follows disconnection of electrical connector and then releasing retaining clip to get rid of sensor from the pump (Allen 84). Put all replaced components back in place as we have done in reverse order.
Posted by GMPartsGiant Specialist
Q:
What is the purpose of the Evaporative Emissions Control (EVAP) system for the 2013 Chevrolet Express? Posted by Customer
A:
The EVAP system is designed to prevent fuel system vapors, containing unburned hydrocarbons, from escaping into the atmosphere.
Posted by GMPartsGiant Specialist
See expert answers on similar Canister Purge Valves
Q:
What conditions result in the ECM/PCM keeping the EVAP purge valve control solenoid de-energized, and when does it regulate vapor purging into the intake manifold for the 1990 Chevrolet K1500? Posted by Customer
A:
In cold conditions and during a hot start time delay, the ECM/PCM keeps the solenoid de-energized. Once the engine reaches the correct operating temperature, the ECM/PCM regulates vapor purging into the intake manifold based on the engine's running conditions. It does so by cycling the purge valve control solenoid ON and OFF approximately 5 to 10 times per second, adjusting the flow rate.
Posted by GMPartsGiant Specialist
See expert answers on similar Canister Purge Valves
Q:
How do you remove the EVAP canister vent solenoid for the 2007 Chevrolet Silverado? Posted by Customer
A:
To remove the EVAP canister vent solenoid, start by disconnecting the electrical connector and quick-connect fittings from the solenoid. Then, remove it from its mounting bracket.
Posted by GMPartsGiant Specialist
See expert answers on similar Canister Purge Valves
Q:
How do you remove the EVAP canister vent solenoid for the 2011 GMC Sierra? Posted by Customer
A:
To remove the EVAP canister vent solenoid, start by disconnecting the electrical connector and quick-connect fittings from the solenoid. Then, remove it from its mounting bracket.
Posted by GMPartsGiant Specialist
See expert answers on similar Canister Purge Valves
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Genuine GM Part 1997277, the Right Choice

Your vehicle deserves only genuine OEM GM parts and accessories. To ensure reliability, purchase GM part # 1997277 Valve,Evap Emission Canister Purge Solenoid. It is sometimes referred to as Cadillac Canister Purge Valves. Our GM parts and accessories are expedited directly from authorized GM dealers strategically located all across the U.S. and are backed by the manufacturer's 12 month, 12,000 mile warranty. OEM GM parts are the best for restoring your vehicle to factory condition performance. This part fits specific Cadillac Escalade models.

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