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Service bulletin 4720

A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.

The communication, as NHTSA indexes it (as of 2026-10-19)
TypeService bulletin
NHTSA id10023746
Published by NHTSA2008-01-30
Manufacturer's number4720
Manufacturer's date2007-12-01
NHTSA componentELECTRICAL SYSTEM:WIRING

NHTSA's summary

MIL, REDUCED ENGINE POWER, DTC P0087 P0089 P0451 P0452 P0628. *NJ

The document

No address for NHTSA's copy can be built for this communication. Ask the dealer for it by the manufacturer's number.

Components

Electrical system, Wiring and fuses

Trouble codes named

P0087, P0089, P0451, P0452, P0628

Vehicles listed
CADILLAC CTS2008

Listing a model year does not mean every vehicle of it is concerned: the document says which.

Other bulletins for the same vehicles and component
100089005G2019-05-13. Service bulletin. This warranty admin bulletin explains to the technician additional information may be needed when submitting transactions when doing wiring repairs.
100089005H2019-03-18. Service bulletin. This warranty admin bulletin explains to the technician additional information may be needed when submitting transactions when doing wiring repairs.
10-00-89-005C2018-06-04. Service bulletin. This informational bulletin is a revision for 10-00-89-005B to add the 2014 model year and labor codes.
10-00-89-005E2018-05-21. Service bulletin. This warranty administration bulletin adds the 2016 model year to a communication which provides dealership personnel revised wiring repair labor operations and required additional information.
13-08-116-0012018-04-16. Service bulletin. This technical bulletin provides a procedure on suspected tampering due to aftermarket ALDL or DLC interface devices causing multiple issues.
100089005D2017-12-22. Service bulletin. This warranty informational bulletin advised the technician that when performing a wiring repair, more information is required.
10-08-42-001D2017-08-15. Service bulletin. This technical bulletin provides a procedure to check the headlamp wiring connector and replace if damaged.
PIC4740C2017-08-15. Service bulletin. This Preliminary Information communication provides information to the technician about vehicles with the Service Engine Soon light is on, Reduced engine power message, no crank, multiple warning lights on, transmission shifts hard, or the door locks cycle while driving. The Transmission Control Module or Engine Control Module may not communicate. With Diagnostic Trouble Codes C0242, C0561, P0575, P0615, P0700, P0856, P1629, P2544, U0073, U0074, U0100, U0109, U0121, U0140, U2100, U2105, and / or U2106 stored. The technician is to inspect the transmission X1 connector terminals for loose or poor fit. Disconnect the X1 connector and carefully tug on each wire to insure pins are fully seated. A side load on the wires may also cause a false positive lock. Technician is to repair the connections as necessary.
PIC60022017-08-15. Service bulletin. This Preliminary Information communication provides information to the technician about vehicles were the Body Control Module was replaced and the vehicle has returned with hood ajar, turn signals inoperative, and trunk will not open. Technician will need to inspect ground circuits 1050 at left trunk hinge area and also G401.
PIT-4730A2011-03-28. Service bulletin. BUICK/CADILLAC/CHEVROLET/GMC/HUMMER/PONTIAC/SATURN: ADDITIONAL DIAGNOSTIC INFORMATION FOR U0140 OR U0073. VEHICLE MAY EXHIBITS SOME SYMPTOM(S) AS DOOR LOCKS CYCLE WHILE DRIVING; INTERMITTENT NO START; SERVICE STABILITRAK DIC MESSAGE; SPEEDOMETER AND TACHOMETER FREEZE WHILE DRIVING. *PE