NHTSA ID Number: 10126415
Manufacturer Communication Number: GCUS-9-1066
TSB/Document Date: 2017-12-22
Summary
14588A - Special Coverage (revised Part Information and Service Procedure sections). On some 2011-2015 model year Chevrolet
Caprice and 2012-2015 model year Chevrolet Impala police patrol vehicles, idling the engine for extended periods of time can prematurely wear the engine-cooling-fan motor. In this condition, the motor may fail to operate or operate noisily. This condition can also damage motor-control relays in the vehicle's underhood bussed electrical center (UBEC). Dealers are to diagnose and replace fan motors per PI1384 regarding the semi-annual preventative maintenance check for police vehicle cooling fans.
Bulletin No.: 14588A
Date: October 2015
Service Bulletin
SPECIAL COVERAGE
SUBJECT:
Special Coverage Adjustment - Engine Cooling Fan Motor
MODELS:
2011-2015 Chevrolet Caprice
2012-2015 Chevrolet Impala
Equipped as Police Patrol Vehicles (RPO 9C1 or 9C3)
This bulletin has been revised to update the Part Information and Service Procedure sections.
Please discard all copies of bulletin 14588.
CONDITION
On some 2011-2015 model year Chevrolet Caprice and 2012-2015 model year Chevrolet Impala
police patrol vehicles, idling the engine for extended periods of time can prematurely wear the
engine-cooling-fan motor. In this condition, the motor may fail to operate or operate noisily. This
condition can also damage motor-control relays in the vehicle’s underhood bussed electrical center
(UBEC).
SPECIAL COVERAGE ADJUSTMENT
This special coverage covers the condition described above for a period of 6 years or 100,000 miles
(160,000 km), whichever occurs first, from the date the vehicle was originally placed in service,
regardless of ownership.
Dealers are to diagnose and replace fan motors per PI1384 regarding the semi-annual preventative
maintenance check for police vehicle cooling fans. The repairs will be made at no charge to the
customer.
For vehicles covered by Vehicle Service Contracts, all eligible claims with repair orders on or after
July 23, 2015, are covered by this special coverage and must be submitted using the labor operation
codes provided with this bulletin. Claims with repair orders prior to July 23, 2015, must be submitted
to the Service Contract provider.
VEHICLES INVOLVED
All involved vehicles are identified by Vehicle Identification Number on the Applicable Warranties
section in GM Global Warranty Management system. Dealership service personnel should always
check this site to confirm vehicle involvement prior to beginning any required inspections and/or
repairs. It is important to routinely use this tool to verify eligibility because not all similar vehicles
may be involved regardless of description or option content.
Copyright 2015 General Motors. All Rights Reserved.
Page 2
October 2015
Bulletin No.: 14588A
PART INFORMATION
Parts required to complete this special coverage are to be obtained from General Motors Customer
Care and Aftersales (GMCCA).
Note: Use the vehicle identification number (VIN) and the GM Electronic Parts Catalog (EPC) to
determine which part to order.
Part Number
Description
Quantity/Vehicle
22762591
89018696
89018695
89018693
89018691
92191945
84008379
19300089
19300091
12377900
12337820
11561734
MOTOR KIT, ENG CLG FAN
MOTOR KIT, ENG CLG FAN (RIGHT)
MOTOR KIT, ENG CLG FAN (LEFT)
BLADE KIT, ENG CLG FAN (RIGHT)
BLADE KIT, ENG CLG FAN (LEFT)
MOTOR KIT, ENG CLG FAN
RELAY JUMPER HARNESS
DURASEAL SPLICE TUBE
DURASEAL SPLICE TUBE
NYOGEL LUBE
TIE STRAP
RIVET
2
1
1
1
1
2
1
2
4
As Required
4
2
SERVICE PROCEDURE
NOTE: There are multiple Technical Service Bulletins related to the coolant fan motors in these
vehicles. Please refer to SI for proper diagnostic procedures.
CAPRICE ONLY
1.
Using the diagnostic steps in SI and Technical Service Bulletins, determine if the engine
coolant fan motors need to be replaced.
2.
If necessary, replace the coolant fan motors. Refer to Engine Coolant Fan Motor
Replacement in SI.
IMPALA ONLY
Inspect the vehicle and service history to determine if the updated engine cooling fan wiring
harness kit has been installed.
If the revised engine coolant fan wiring harness has been installed, proceed to step #1
below.
If the revised engine coolant fan wiring harness has NOT been installed, proceed to the
Engine Cooling Fan Wiring Harness Installation section below. After completing the wiring
harness installation, proceed to step #1 below.
1.
Using the diagnostic steps in SI, determine if the engine coolant fan motors need to be
replaced.
2.
If necessary, replace the coolant fan motors. Refer to Engine Coolant Fan Motor
Replacement in SI.
ENGINE COOLANT FAN MOTOR WIRING HARNESS INSTALLATION
1.
Disconnect the battery. Refer to Battery Negative Cable Disconnection and Connection in SI.
Page 3
2.
October 2015
Bulletin No.: 14588A
Remove the passenger side motor compartment front cross brace.
4283365
3.
Remove the passenger side head lamp and the G101 ground bolt.
4.
Disconnect the cooling fan wiring harness from the fans. Carefully disengage the retainer
clips of the factory harness from the fan shroud. Use care to not damage the attachment
features on the shroud, they will be reused.
4283367
5.
Cut the cooling fan wiring branch at the headlamp opening area. Measure approximately
100mm from the main wire bundle. This branch contains the White, Black, Grey and Light
Blue wires. Remove and discard the cut off fan harness.
4283368
Page 4
6.
October 2015
Bulletin No.: 14588A
Seal the four cut leads of the harness with four Duraseal Splice Tubes. Wrap the cut harness
section with electrical tape to prevent moisture damage.
4283371
7.
Route the new harness along the bottom of the fan shroud and engage the retainer clips into
the mounting holes in the fan shroud.
8.
Add Nyogel Lube to the terminals of both fan connectors on the new harness. Connect the
fan connectors to the fan motors.
9.
Route the new fan harness into the passenger side headlamp pocket area.
4283372
10. Route the harness through the headlamp area, inboard of the windshield washer fluid bottle,
then outboard of the UBEC. Loosely install three tie straps, do not tighten the straps at this
time.
Page 5
October 2015
Bulletin No.: 14588A
4283373
11. Route the fan control wires (D-GN and D-BU) outboard of the UBEC to the engine harness, in
the area where it enters the UBEC. Place the two harness fuses outboard of the UBEC.
4283375
12. Route the ground wire of the new harness through the passenger side head lamp opening
and install over the G101 ring terminal (see below). Reinstall the ground bolt. Tighten:
Tighten the bolt to 10 +/- 2 N-m.
13. Remove the UBEC cover.
4283378
Page 6
October 2015
Bulletin No.: 14588A
14. Remove the nuts from both UBEC battery studs, and remove all ring terminals. The
convoluted conduit on the left ring terminal may not be present in some vehicles. It may
appear as double-crimped fusible links to a single ring terminal.
4283380
15. Unscrew the four UBEC connector bolts and remove the UBEC.
4283381
16. Remove the engine harness connector and turn over to access the wiring.
17. Find the fan control wires in the engine harness: D-GN wire, 22 AWG, circuit 335 (Cavity H7),
and D-BU wire, 22 AWG, circuit 473 (Cavity C7).
Note: There is 1 additional D-GN/WH stripe wire (22 AWG) and 1 DK-GN wire (20 AWG). The
required D-GN wire is a 22 AWG wire.
18. Extract the D-GN and D-BU control wires and cut the wires. Stagger wire cut points to permit
splices to lay end-to-end. Apply electrical tape to the wire ends going into the UBEC
connector.
Page 7
October 2015
Bulletin No.: 14588A
4283383
19. Splice the new fan relay control wires from new harness (D-GN and D-BU) to the matching
cut wire ends leading to PCM. Apply heat to the heat shrink tubes to seal the splices.
4283386
20. Return the spliced wires into the UBEC splash shield between the connectors, routing them
so they will not be crushed during the UBEC re-installation. Using a tie strap, secure the
spliced wires near the existing tie strap on the engine harness connector.
4283388
21. Use electrical tape to keep the two wire leads in place during UBEC re-installation.
Page 8
October 2015
Bulletin No.: 14588A
4283392
22. Route the two wires out of the UBEC.
23. Install the UBEC back in place and tighten the 4 connector bolts. Tighten: Tighten the bolt to
6 +/- 2 N-m.
4283393
24. Re-install all original ring terminals to the UBEC battery studs. Install the 2 ring terminals
(RED) of the new harness to the studs as follows: route the shortest ring terminal lead to the
RH UBEC stud and the longest lead to the LH battery stud. Orient the ring terminals with the
crimp up and displaced angularly to permit all the ring terminals to lie flat. Reinstall the nuts.
Tighten: Tighten the nuts to 15 +/- 3 N-m.
4283395
Page 9
October 2015
Bulletin No.: 14588A
25. Remove, and discard, both Cooling Fan Fuses in UBEC. They are on each side of the
Cooling Fan Relays.
26. Reinstall the UBEC cover.
4283403
27. Position the relay and bracket assemblies on the upper radiator support as shown, Mark the
drill location with a paint pen. Note that the double relay bracket is located on the passenger
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TSB/Document ID: GCUS-9-1066
Replacement Service Bulletin Number:
MFR Communication Date: 2015-10-20
MFR Internal Campaign ID/Software Version:
Communication Type: Service Bulletin/Repair Instructions
NHTSA Components: ENGINE AND ENGINE COOLING
MFR Component System:
MFR Component Subsystem:
Previous TSB | Next TSB |
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