Auxiliary Coolant Pump Will Not Connect to Replacement Radiator -kw 03-01-38-007 waterhose - Replacement Radiator Installation Diagnosis

Oct 23, 2026

Uploaded by Marglet

Technician guidance addresses a condition where the auxiliary coolant pump cannot be connected to a replacement radiator. The bulletin instructs discarding the auxiliary coolant pump and hoses since the auxiliary coolant pump is no longer used after 2001MY. It explains that an earlier radiator provision was removed on a second-design radiator, and recommends replacing the pump with a modified heater inlet elbow. Detailed removal steps include draining coolant, disconnecting electrical connectors and hoses, cutting wiring, and preparing the elbow surface. Installation includes hose orientation, routing, and electrical splice sleeve procedures, followed by refilling and rinsing the cooling system.

LanguageEnglish

CategoryHealthcare

FormatPDF

Pages9

Reading Time23 min

AccessFree to download

Auxiliary Coolant Pump Will Not Connect to Replacement Radiator

Recommendation/Instructions

Models

Technician Purpose

Service Procedure: Auxiliary Pump Removal

Service Information

# Auxiliary Coolant Pump Will Not Connect toReplacement Radiator -kw 03-01-38-007 waterhose\#PIP3120-(Aug 25,2004) Aux Coolant Pump Will Not Connect to Replacement Radiator The following diagnosis might be helpful if the vehicle exhibits the symptom described in the PI.Condition/Concern: Technician is not able to connect the auxiliary coolant pump to a replacement radiator. ## Recommendation/Instructions: Discard the auxiliary coolant pump and hoses -no longer used. The auxiliary coolant pump was no longer used after 2001MY.The first design radiator was replacedby a second design radiator that does not have provisions to install the auxiliary coolant pump.TSB 03-01-38-007 discusses the elimination of the auxiliary coolant pump when the pump fails-install heaterinlet elbow assembly. Please follow this diagnosis process thoroughly and complete each step.If the condition exhibited isresolved without completing every step,the remaining steps do not need to be performed.If these stepsdo not resolve the condition,please contact GM TAC for further diagnostic assistance. Models: (00-01 Saturn L-Series 3.0L/L81) GM bulletins are intended for use by professional technicians,NOTa"do-i-yourselfer".They are writen toinform these technicians of conditions that may occur on some vehicles.or to provide infornation that could assistin the proper service of a vehicle.Properly trained technicians have the equipment,tols,safety instructions,andknow-how to do a job properly and safcly.If a condition is described,DONOT assume that the buletin applies toyour vchicle,or that your vehicle will have that condition.See your GM dealer fo intomation on whether yourvehicle may benefit from the infornation. WE SUPPORT VOLUNTARY TECHNICIAN CERTIFICATION Service Information Regarding Elimination ofFront Auxiliary Water Pump and Instructions toInstall Elbow in Place of Pump\#03-01-38-007-(Jun 17,2003) Service Information Regarding Elimination of Front Auxiliary Water Pump and Instructions to InstallElbow in Place of Pump 2000 Saturn L-Series Vehicles with 3.0L V6 Engine(VIN R--RPOL81) Technician Purpose: The auxiliary water pump is not needed for vehicles with V-6engines.Therefore,any time an auxiliarywater pump needs replacing,replace it with a modified heater inlet elbow.Refer to the service procedurein this bulletin to modify and install the elbow. Service Procedure; Auxiliary Pump Removal 1.Drain coolant.(Refer to the proper draining procedure in the 2000 Saturn L-Series Engine ServiceManual.) 2.Disconnect both cooling fan electrical connectors.Move the wiring harnesses and connectors outof the way. 3.Remove the radiator upper mount brackets.This will allow more access to the auxiliary waterpump. 4.Disconnect the auxiliary water pump electrical connector and remove harness from clip. 5.Remove auxiliary water pump inlet hose to auxiliary water pump,leaving clamp on hose. 6.Remove auxiliary water pump outlet hose to auxiliary water pump,leaving clamp on hose. 7.Remove auxiliary water pump to fan shroud by lifting clip tabs with screwdriver and sliding clipsoutward. 8.Remove pump and discard. 9.Using an appropriate metal cutting tool,remove the bracket from the heater inlet elbow,P/N22702079.Discard bracket. 10.Remove any sharp edges from the cut surface using a file. 11.Apply rust inhibiting paint or primer to the cut surface of the elbow.(Refer to the 2000 Saturn L-Series Collision Repair Service Manual.) 12.Install the auxiliary water pump inlet hose to one end of the elbow,making sure to orient theelbow so the outlet hose can be installed at the other end of the elbow. 13.Secure inlet hose to elbow using hose clamp. 14.Install the auxiliary water pump outlet hose to the other end of the elbow. 15.Secure outlet hose to elbow using hose clamp. 16.Using a wire tie strap,secure the elbow to the fan shroud assembly making sure to not interferewith the cooling fan. 17.Cut connector for

FAQs

What condition does TSB 03-01-38-007 address?

It addresses the technician being unable to connect the auxiliary coolant pump to a replacement radiator.

What is the recommended replacement when the auxiliary coolant pump needs to be replaced?

Discard the auxiliary coolant pump and hoses and replace the pump function with a modified heater inlet elbow.

What must be done before removing the auxiliary coolant pump?

Drain the coolant, then disconnect the cooling fan electrical connectors and move the wiring harnesses and connectors out of the way.

Oct 23, 2026

Uploaded by Marglet