Service bulletins for the 2008 GMC Savana
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.
1110 on file from NHTSA, as of 2026-10-19.
By type
By component
By trouble code
By topic
| PIT3271F | 2017-08-15. Service bulletin. TIRES; WHEELS. This Preliminary Information communication provides information to the technician about changing the tire and wheel size on vehicles. General Motors will only support a tire calibration for tires that have been sized, tested and designed for the vehicle in question and its applications. Technician should not use the information that is provided by the antilock braking system tire size selection. |
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| PIT3173C | 2017-08-15. Service bulletin. ENGINE AND ENGINE COOLING. This Preliminary Information communication provides information to the technician that fluid contamination may be directed to one of the following testing centers according to the type of fluid needing testing. Dealer should send the correct fluid to the proper testing center. |
| PIC4801E | 2017-08-15. Service bulletin. EQUIPMENT:ELECTRICAL:NAVIGATIONAL SYSTEM(GLOBAL POSITIONING SYSTEM); EQUIPMENT:ELECTRICAL. This Preliminary Information communication provides information to the technician on how to diagnose and repair vehicles that may have an OnStar Turn-By-Turn Navigation the system that is inoperative. Technician verifies there are no Diagnostic Trouble Codes are present in the Antilock Braking System and Vehicle Communication Interface Module of the vehicle. If no Diagnostic Trouble Codes found call OnStar using the Blue button on the OnStar key pad and ask the advisor for a turn by turn route. Also make a OnStar personal call and a call into the vehicle. If normal diagnostics do not lead to a resolution technician will need to call General Motors Technical Assistance Center for further assistance. |
| PIC4310H | 2017-08-15. Service bulletin. EQUIPMENT:ELECTRICAL:NAVIGATIONAL SYSTEM(GLOBAL POSITIONING SYSTEM); EQUIPMENT:ELECTRICAL. This Preliminary Information communication provides information to the technician about vehicle that may have an OnStar system that has progression tones when pressing the blue or red button. Technician will need to call General Motors Technical Assistance Center with the scan tool data from the OnStar system. |
| PIT4733J | 2017-08-15. Service bulletin. EQUIPMENT:ELECTRICAL; ELECTRICAL SYSTEM:SOFTWARE. This Preliminary Information communication provides information to the technician that customers may inquire as to the availability of OnStar bluetooth on their vehicle. Technician should be advised that Vehicles with Regular Production Option Code (UPF or UWE) offer Bluetooth through the OnStar system. |
| PIT4907A | 2017-08-15. Service bulletin. SERVICE BRAKES. This Preliminary Information communication provides information to the technician about brake rotors on new vehicles and replacement parts from General Motors Service Parts Operations. Technician should be advised the costing should not be removed from the brake rotor it will wear off with normal brake usage. Dealer should communicate to the customer this condition is a normal operating characteristic of their vehicle. |
| PIT4815C | 2017-08-15. Service bulletin. ELECTRICAL SYSTEM. This Preliminary Information communication provides information to the technician with additional vehicle speed sensor diagnostic information. Technician may encounter multiple issues when diagnosing a Vehicle Speed Sensor. Technician will find it difficult to follow the speed signal path between the components. To test connect the Fluke meter leads between circuits 821 and 822 and set the meter to Alternating current voltage and then press the hertz button. When the Engine Control Module showing correct miles per hour in the data list however it is setting a Diagnostic Trouble Code for the Vehicle Speed Sensor. To test connect the Fluke meter red lead to circuit 6399 and the black lead to ground, then set the meter to Direct current voltage and press the hertz button. The Instrument Panel Cluster speedo will work correctly when the Engine Control Module or Antilock Braking System Diagnostic Trouble Codes are for the Vehicle Speed Sensor. To test connect the Fluke meter red lead to circuit 1827 and the black lead to ground, then set the meter to Direct current voltage and press the hertz button. When the Antilock Braking System Malfunction Indicator Lamp on with Electronic Brake Control Module Diagnostic Trouble Code C0055 and no other customer complaints, to test connect the Fluke meter red lead to circuit 817 and the black lead to ground, then set the meter to Direct current voltage and press the hertz button. |
| PIT3665C | 2017-08-15. Service bulletin. SERVICE BRAKES; SERVICE BRAKES, HYDRAULIC. This Preliminary Information communication advises the technician that the Hydro-Boost is not serviceable and will need to be replaced if the brake pedal moves or applies on its own at a full turn. |
| PIP4932B | 2017-08-15. Service bulletin. ENGINE AND ENGINE COOLING. This Preliminary Information communication provides information to the technician about vehicles with Service Engine Soon Malfunction Indicator Lamp. Technician may find Diagnostic Trouble Code P0101. Technician should follow published Service Information diagnostics for any Diagnostic Trouble Codes that are set. If during diagnosis the tech has found that the Airflow Leak Equivalency Ratio or Induction System Leak Indication is above or below the specification the tech will have to carefully check for leaks in the air intake. |
| PIT5054A | 2017-08-15. Service bulletin. STRUCTURE:BODY:BUMPERS. This Preliminary Information communication provides information to the technician about vehicles that have a click, clunk, pop type noise coming from the front end. Technician will need to align the bumper. |
| PIT4826B | 2017-08-15. Service bulletin. SERVICE BRAKES, HYDRAULIC:FOUNDATION COMPONENTS:DISC:PADS; SERVICE BRAKES; SERVICE BRAKES, AIR:DISC:PADS. This Preliminary Information communication provides information to the technician about hairline cracks may be noticed in the pad friction material, when performing a brake inspection. Technician should be advised that the hairline cracks do not affect the operation of the brake system and the pads should not be replaced if only hairline cracks are found. |
| PIC5491A | 2017-08-15. Service bulletin. EQUIPMENT:ELECTRICAL. This Preliminary Information communication provides information to the technician about vehicles that have an OnStar system that will not power up. Technician should turn off the ignition and cancel retained accessory power. After the vehicle has powered down, remove power to the OnStar module for five minutes. After the power has been removed for five minutes, if the OnStar system is working release the vehicle. If the OnStar system is still inoperative continue with published Service Information diagnostics. |
| PIC4935D | 2017-08-15. Service bulletin. ELECTRICAL SYSTEM. This Preliminary Information communication provides information to the technician about vehicles that during battery parasitic drain test, there may be some confusion as to what the normal power consumption reading should be from the OnStar system. Technician should understand the power cycles of the various OnStar systems. All Generation 6, 7, 8, and 9 systems are powered up continuously for 48 hours from ignition off. After 120 hours from ignition off, these systems then completely power off. The Onstar modules draw: * IGN ON - 240 to 400 Milliamp. * IGN OFF - 3 to 20 Milliamp for 48 hours or 120 hours on Gen 9 and vehicle communication platforms. * IGN OFF - 0.2 to 0.8 Milliamp after 48 hours or 120 hours on Gen 9 and vehicle communication platforms. |
| PIP5071 | 2017-08-15. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION; POWER TRAIN. This Preliminary Information communication provides information to the technician about vehicle that has a squawk or grunt type noise when shifting from 2nd to 3rd gear. Technician should replace the 3-4 clutch Friction and Steel Clutch Plates along with the Apply Plate and Selective Backing Plate. |
| PIT4648D | 2017-08-15. Service bulletin. ELECTRICAL SYSTEM:WIRING; SERVICE BRAKES, AIR:ANTILOCK:WHEEL SPEED SENSOR. This Preliminary Information communication provides information to the technician about vehicles that have a Antilock Braking System Malfunction Indicator Lamp on and or the service Stability message on. Technician may find Diagnostic Trouble Code C0045 and or C0050 found in the Electronic Brake Control Module. Technician will need to inspect the wires/crimps/terminals at the suspect Wheel Speed Sensor connector. |
| PIT3099J | 2017-08-15. Service bulletin. EQUIPMENT ADAPTIVE/MOBILITY. This Preliminary Information communication provides information to the technician about installing General Motors Accessory parts. Technician can check Service Information for some accessories. Technician can also contact Partech for assistance. |
| PIT3237F | 2017-08-15. Service bulletin. VISIBILITY:GLASS, SIDE/REAR; VISIBILITY:WINDSHIELD. This Preliminary Information communication provides information to the technician about the percentage of Ultraviolet protection or tint offered by the windshield or side glass. Technician should be advised Windshield reduces Ultraviolet rays down to 4% or less. Front side door glass reduces Ultraviolet rays down to 35% or less. Windshields are SOLAR glass with a light transmittance of >/=70%. Front door glass are Solar glass with a light transmission of >/=70%. Rear door glass, quarter windows and back windows can use either Solar glass (>/=70%) or Privacy glass, which has a light transmittance of 20%. |
| PIC5759 | 2017-08-15. Service bulletin. EQUIPMENT:ELECTRICAL; EQUIPMENT:ELECTRICAL:RADIO/TAPE DECK/CD ETC.. This Preliminary Information communication provides information to the technician about vehicles that have a message on the radio "maximum number of phones are currently paired to the vehicle". Dealer should advise the customer this is normal operation of the vehicle due to the maximum number of five phones can be paired to a vehicle. |
| PIC5491D | 2017-08-15. Service bulletin. EQUIPMENT:ELECTRICAL; EQUIPMENT:ELECTRICAL:NAVIGATIONAL SYSTEM(GLOBAL POSITIONING SYSTEM). This Preliminary Information communication provides information to the technician about vehicles that have an OnStar system that will not power up. Technician should turn off the ignition and cancel retained accessory power. After the vehicle has powered down, remove power to the OnStar module for five minutes. After the power has been removed for five minutes, if the OnStar system is working release the vehicle. If the OnStar system is still inoperative continue with published Service Information diagnostics. Technician may need to contact General Motors Technical Assistance Center depending on the STID, Station ID, or OnStar Customer Identifier. |
| PIT4844E | 2017-08-15. Service bulletin. ELECTRICAL SYSTEM; STEERING; VEHICLE SPEED CONTROL:CRUISE CONTROL. This Preliminary Information communication provides information to the technician with the installation of Cruise Control on a vehicle which did not come equipped with the option. Technician will need to contact the Techline Customer Support Center to determine if a calibration is available for the vehicle. If they are able to provide a calibration for the vehicle then order steering wheel with cruise control buttons, steering wheel sir coil, and steering column wiring harness. |
| PIT3237G | 2017-08-15. Service bulletin. VISIBILITY:WINDSHIELD. This Preliminary Information communication provides information to the technician about the percentage of UV protection or tint offered by the windshield or side glass. Technician should be advised Windshield reduces UV rays down to 4% or less. Front side door glass reduces UV rays down to 35% or less. Windshields are SOLAR glass with a light transmittance of >/=70%. Front door glass are Solar glass with a light transmission of >/=70%. Rear door glass, quarter windows and back windows can use either Solar glass (>/=70%) or Privacy glass, which has a light transmittance of 20%. |
| PIT4376G | 2017-08-15. Service bulletin. EQUIPMENT:ELECTRICAL:ANTI-THEFT DEVICES; ELECTRICAL SYSTEM. This Preliminary Information communication advises the technician about key and theft information for Fleet Vehicles equipped with RPO 6E2 or 6E8 and converting to fleet mode. Technician will need to ensure fleet vehicles with RPO 6E2 or 6E8 should be checked to verify that the Theft Deterrent Module is in fleet mode prior to attempting to add keys. |
| PIP5163 | 2017-08-15. Service bulletin. ENGINE AND ENGINE COOLING. This Preliminary Information communication provides information to the technician about engine block of possible cylinder bore damage, scoring or out of round as the possible cause of engine oil consumption, misfire, cylinder leakage or blow by. Technician will need to inspect the engine for Cylinder damage or scoring, An out of round cylinder bore, Dirt intrusion, and Catalytic Converter failure. |
| PIC5932 | 2017-08-15. Service bulletin. EQUIPMENT:ELECTRICAL. This Preliminary Information communication provides information to the technician about customers that may complain of various concerns when using Bluetooth components. Technician should use the Preliminary Information to gather information from the customer on their Bluetooth device and the concern they are having before calling General Motors Technical Assistance Center. |
| 06-08-50-009I | 2017-08-15. Service bulletin. SEATS; SEATS:FRONT ASSEMBLY:SEAT HEATER/COOLER; AIR BAGS:SENSOR:OCCUPANT CLASSIFICATION. This informational bulletin provides Information on Passenger Presence Sensing System (PPS or PSS) Concerns with Custom Upholstery, Accessory Seat Heaters or Other Comfort Enhancing Devices |
The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.