1991 GMC Safari TSBs
9 Technical Service Bulletins across 3 categories
Categories
Engine
4 bulletinsCOLD ENGINE KNOCK. *TW
CALIFORNIA RECALL - GENERAL MOTORS HAS DETERMINED THAT CERTAIN 1991 C/K TRUCKS, M/L AND G VANS WITH 4.3L ENGINES MAY BE...
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EMITTING NON-METHANE HYDROCARBONS IN EXCESS OF CALIFORNIA EMISSION STANDARDS. TO CORRECT THIS CONDITION, DEALERS ARE TO INSTALL A NEW EXHAUST OXYGEN SENSOR. *TW
GENERAL MOTORS: ON ALL 1988-2009 FULL SIZE CHEVROLET/GMC PICKUPS, UTILITIES AND VANS, THE BRAKE PEDAL WILL MOVE DOWN OR...
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SELF APPLY DURING FULL LOCK TURNS OR NEAR FULL LOCK TURNS. CHEVROLET ASTRO AND GMC SAFARI VANS; HUMMER 2 ARE INCLUDED. *PE UPDATED 5/24/11. *PE
WINDOW REGULATOR MOTOR DOES NOT FIT.
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*TT
Transmission
3 bulletinsDIAGNOSIS OF CRACKED OR BROKEN TRANSMISSION CASE.
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*TT 2006 AND PRIOR CARS AND LIGHT DUTY TRUCKS. *TT
TRANSMISSION EXTENTION SEAL LEAKS.
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*TW
DIAGNOSTIC INFORMATION FOR INTERMITTENT TRANSMISSION DOWNSHIFT, SLIP, BUSY/CYCLING TCC OR NOISY COOLING FAN.
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*TT
Other
2 bulletinsUNKNOWN
OIL PRESSURE GAUGE READING CONCERNS.
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*TW