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Service bulletins for the 2008 Cadillac CTS

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.

1138 on file from NHTSA, as of 2026-10-19.

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Only bulletins with component: Electrical system are shown. Show all

Bulletins, newest first
PIT5074J2016-10-21. Service bulletin. ELECTRICAL SYSTEM. THIS PRELIMINARY INFORMATION COMMUNICATION PROVIDES INFORMATION TO THE TECHNICIAN ABOUT THE USE OF J-35616-64B TERMINAL TEST PROBE, REPLACEMENT TERMINALS, AND TERMINATED LEADS. THE J-35616-64B IS THE LATEST TEST PROBE RELEASED FOR CHECKING TENSION OR PROBING THE .64 SERIES TERMINALS. THE TEST PROBE TERMINAL HAS BEEN RELEASED IN THE TERMINAL REPAIR KIT (J-38125-620H) LOCATED IN LEAR TRAY 7 PART NUMBER 963716-2. THERE ARE 5 TERMINATED LEADS IN A PACKAGE PART NUMBER IS 13505346, WHICH CAN BE ORDERED THROUGH YOUR NORMAL GENERAL MOTORS CUSTOMER CARE AND AFTERSALES PARTS CHANNEL
030603004R2016-10-18. Service bulletin. ENGINE; ELECTRICAL SYSTEM:12V/24V/48V BATTERY. THIS INFORMATIONAL BULLETIN PROVIDES INFORMATION ON HOW TO TEST A BATTERY AND WHAT IS NEEDED TO WARRANTY A BATTERY.
16NA2412016-10-14. Service bulletin. ELECTRICAL SYSTEM. THIS TECHNICAL BULLETIN PROVIDES A PROCEDURE TO CHECK THE CYLINDERS FOR DAMAGED PISTONS AND DETERMINE IF THE USE OF AFTERMARKET CALIBRATIONS OR PERFORMANCE PARTS MAY BE THE CAUSE.
PIP5094A2016-09-26. Service bulletin. ELECTRICAL SYSTEM. THIS PRELIMINARY INFORMATION COMMUNICATION ADVISES THE TECHNICIAN THAT ,WHEN TESTING ANY CIRCUIT FOR OPEN OR RESISTANCE, IT IS IMPERATIVE THAT ALL RELATED TERMINAL PIN FIT AND TENSION BE CHECKED WHEN THE TEST STEPS REQUIRE DISCONNECTION OF THE CONNECTOR OR COMPONENT, PRIOR TO ANY COMPONENT REPLACEMENT. ALWAYS USE THE RECOMMENDED TERMINAL TEST TOOL DURING THESE TESTS.
PIC-4935-E2016-08-17. Service bulletin. ELECTRICAL SYSTEM:12V/24V/48V BATTERY; ELECTRICAL SYSTEM. THIS PRELIMINARY INFORMATION COMMUNICATION PROVIDES INFORMATION TO HELP THE DEALERSHIP TECHNICIANS PERFORM A PARASITIC DRAIN TEST FOR THE ONSTAR MODULE. WHEN PERFORMING BATTERY PARASITIC DRAIN TEST, THERE MAY BE SOME CONFUSION AS TO WHAT THE NORMAL POWER CONSUMPTION READING SHOULD BE FROM THE ONSTAR SYSTEM.
PIC-5050-A2016-08-17. Service bulletin. ELECTRICAL SYSTEM. THIS PRELIMINARY INFORMATION COMMUNICATION ADVISES THE TECHNICIAN THE STEPS ON REPAIRING THE CONCERN. A CUSTOMER MAY IDENTIFY A CONCERN OF UNABLE TO REACTIVATE A VEHICLE'S ONSTAR THAT HAS BEEN PREVIOUSLY DISABLED BY ONSTAR. DEALER IS TO CALL GENERAL MOTORS TECHNICAL ASSISTANCE CENTER FOR FURTHER ASSISTANCE IF THE CONCERN IS STILL PRESENT.
PIC-5260-A2016-08-11. Service bulletin. STRUCTURE:BODY; ELECTRICAL SYSTEM; VISIBILITY:SUN/MOON ROOF ASSEMBLY. THIS PRELIMINARY INFORMATION COMMUNICATION ADVISES THE TECHNICIAN THE STEPS ON DIAGNOSING THE CONCERN. VEHICLE'S SUNROOF OPERATION INTERMITTENT, BIND, NOISE, AUTO-REVERSE, AND/OR WATER LEAKS.
SB-15-06-03-001B2016-08-09. Service bulletin. ELECTRICAL SYSTEM:12V/24V/48V BATTERY. THIS INFORMATIONAL BULLETIN PROVIDES INFORMATION THAT MAY BE USEFUL ON DIAGNOSING BATTERIES THAT HAVE SET FOR A LONG PERIOD OF TIME AND/OR SET IN COLD WEATHER CLIMATES AND TESTING THOSE BATTERIES.
SB-06-08-47-001L2016-08-09. Service bulletin. ELECTRICAL SYSTEM:SOFTWARE. THIS INFORMATIONAL BULLETIN PROVIDES WARRANTY INFORMATION ON USING THE SERVICE PROGRAMMING SYSTEM (SPS) FOR PROGRAMMING CONTROL MODULES
SB-PI-1533B2016-08-06. Service bulletin. ELECTRICAL SYSTEM. THIS PRELIMINARY INFORMATIONAL BULLETIN PROVIDES INFORMATION ON POOR RADIO HANDS-FREE VOICE RECOGNITION PERFORMANCE OR SOUND QUALITY AFTER THE ONSTAR UPGRADE.
PIC60022016-06-22. Service bulletin. EQUIPMENT; ELECTRICAL SYSTEM. SUMMARY TO BE PROVIDED ON A FUTURE DATE.
PIC56302016-06-22. Service bulletin. ELECTRICAL SYSTEM; ENGINE. SUMMARY TO BE PROVIDED ON A FUTURE DATE.
PIC5494D2016-06-17. Service bulletin. ELECTRICAL SYSTEM: INSTRUMENT CLUSTER/PANEL. SUMMARY TO BE PROVIDED ON A FUTURE DATE.
PIC5252A2016-06-17. Service bulletin. ELECTRICAL SYSTEM:IGNITION. SUMMARY TO BE PROVIDED ON A FUTURE DATE.
PB-146482015-06-17. Service bulletin. ELECTRICAL SYSTEM; ELECTRICAL SYSTEM:12V/24V/48V BATTERY. BUICK/CHEVROLET/PONTIAC/SATURN/SAAB/GMC/CADILLAC: TSB CONTAINS AN OWNER NOTIFICATION LETTER. SELECT DOCUMENT SEARCH BUTTON BELOW. IN CERTAIN VEHICLES AND SUVS, ONSTAR MODULE GREEN TELLTALE LIGHT IS ILLUMINATED WHEN VEHICLE IS OFF AND DRAINING BATTERY AND VEHICLE NOT ABLE TO START AFTER FOUR (4) DAYS AND WOULD DISABLE ALL ONSTAR SERVICES. *PE
PIC-46122014-05-15. Service bulletin. ELECTRICAL SYSTEM. GM: THERE MAY BE SIDE OBJECT DETECTION ISSUES. PROCEDURES FOR TROUBLE SHOOTING HINTS TO SUPPLEMENT NORMAL DIAGNOSTICS. *JS
PIP50382012-08-28. Service bulletin. ELECTRICAL SYSTEM:IGNITION; ENGINE. GENERAL MOTORS: SES LIGHT ENGINE MISFIRE AND/OR SHUDDER- INSPECT IGNITION COILS. THIS MAY BE THE RESULT OF A HEAT STRESSED/DAMAGED IGNITION COIL. *JS
PIT5074F2012-05-24. Service bulletin. ELECTRICAL SYSTEM. GM: J-35616-64B TERMINAL TEST PROBE AND REPLACEMENT TERMINAL. ALSO INCLUDED MODELS VERANO, REGAL, LACROSSE, CTS, SRX, VOLT, SONIC, MALIBU, IMPALA, EQUINOX, CRUZE, AVALANCHE, TAHOE SUBURBAN, SILVERADO, SIERRA, YUKON, AND TERRAIN FOR MODEL YEAR 2013. MODEL ESCALADE MODEL YEAR 2012-2013. MODEL PONTIAC G3 MODEL YEAR 2007. MODEL WAVE MODEL YEARS 2005-2010. DENALI MODELS MODEL YEARS 2007-2013. *JS
PB-10037A2011-06-27. Service bulletin. ELECTRICAL SYSTEM. GM: ONSTAR IS MAKING INCOMPLETE CALLS WITHOUT THE DRIVER KNOWING. WHEN HAVE A DATA CONNECTION. *RM
PB-102872011-06-23. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE; ELECTRICAL SYSTEM:SOFTWARE. GM SERVICE CAMPAIGN: SEE DOCUMENT SEARCH BUTTON FOR OWNER LETTER. IN CERTAIN DRIVING CONDITIONS OR IF IT'S BEEN A WHILE BETWEEN OIL CHANGES, THE TIMING CHAIN COULD WEAR PREMATURELY AND CAUSE THE ENGINE LIGHT TO TURN ON. *RM UPDATED 5/23/12. *PE
SB-102562011-06-07. Service bulletin. ELECTRICAL SYSTEM:IGNITION:SWITCH; ELECTRICAL SYSTEM:IGNITION. GM: THERE MAY BE A BIND BETWEEN THE IGNITION LOCK AND THE HOUSING MAKING IT UNABLE TO REMOVE THE KEY FROM THE IGNITION. THE DRIVER MAY NOT BE ABLE TO TURN THE VEHICLE OFF IF IT'S RUNNING. *RM
PIT-4730A2011-03-28. Service bulletin. ELECTRICAL SYSTEM:WIRING; ELECTRICAL SYSTEM: INSTRUMENT CLUSTER/PANEL; ELECTRICAL SYSTEM. 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
PIC-50282009-08-13. Service bulletin. ELECTRICAL SYSTEM:WIRING; ELECTRICAL SYSTEM; ELECTRICAL SYSTEM:WIRING:FUSES AND CIRCUIT BREAKERS. CADILLAC: ONE OR MORE OF THE ELECTRICAL CONCERNS: ABS, STABILITY INDICATOR/WARNING MESSAGES; COMPASS INOP; HEATED SEATS (KB6) INOP; HEATED WASHERS INOP; HEATING VENTILATION AC (HVAC) INOP; MEMORY SEAT INOP; NO START; ONSTAR INOP; POWER WINDOWS INOP; SIR INDICATOR/WARNING MESSAGES WILL LIGHT. AIRBAG IGN 10A/ONSTAR 10A/RDO 15A FUSES MAY BE OPEN. *PE
PIC-4727A2009-03-19. Service bulletin. ELECTRICAL SYSTEM; ENGINE AND ENGINE COOLING:ENGINE. GENERAL MOTORS: THE ENGINE RUNS ROUGH AND THE CHECK ENGINE LIGHT/MALFUNCTION INDICATOR LIGHT (MIL) FLASHES. THE ODD COILS 15A FUSE IS OPEN IN THE UNDER HOOD FUSE BLOCK. *PE
TSB-08259A2009-03-13. Service bulletin. ELECTRICAL SYSTEM:WIRING; EQUIPMENT:ELECTRICAL:NAVIGATIONAL SYSTEM(GLOBAL POSITIONING SYSTEM). BUICK CADILLAC CHEVROLET GMC PONTIAC SATURN SERVICE CAMPAIGN: SEE DOCUMENT SEARCH BUTTON FOR OWNER LETTER. ONSTAR SYSTEM INOPERATIVE; REPLACE ONSTAR MODULE. SOME VEHICLES MAY HAVE AN ONSTAR MODULE WITH A COMPONENT THAT WAS NOT MANUFACTURED TO GM'S SPECIFICATION. CAN RESULT IN AN OPEN CIRCUIT AND AN INABILITY TO CALL OR RECEIVE CALLS FROM ONSTAR. CSC LETTER WAS RECEIVED. *PE

The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.