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1990 GMC Safari
6 Technical Service Bulletins (TSBs)
TSB List for the 1990 GMC Safari
Technical Service Bulletins (TSBs) for the 1990 Safari are official communications between GMC & their dealerships that describe processes for troubleshooting or fixing certain common problems. All vehicle manufacturers are required by U.S. law to make their TSBs available to the public.
SERVICE BRAKES, HYDRAULIC:PEDALS AND LINKAGES
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TSB #PIT-3665-A
GENERAL MOTORS: ON ALL 1988-2009 FULL SIZE CHEVROLET/GMC PICKUPS, UTILITIES AND VANS, THE BRAKE PEDAL WILL MOVE DOWN OR SELF APPLY DURING FULL LOCK TURNS OR NEAR FULL LOCK TURNS. CHEVROLET ASTRO AND GMC SAFARI VANS; HUMMER 2 ARE INCLUDED. Read More »
ENGINE AND ENGINE COOLING:ENGINE:GASOLINE
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TSB #376105
COLD ENGINE KNOCK. *TW Read More »
POWER TRAIN
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TSB #990730016A
DIAGNOSTIC INFORMATION FOR INTERMITTENT TRANSMISSION DOWNSHIFT, SLIP, BUSY/CYCLING TCC OR NOISY COOLING FAN. *TT Read More »
POWER TRAIN:AUTOMATIC TRANSMISSION
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TSB #467108
TRANSMISSION EXTENTION SEAL LEAKS. *TW Read More »
POWER TRAIN:AUTOMATIC TRANSMISSION:LEVER AND LINKAGE:COLUMN SHIFT
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TSB #020730024A
DIAGNOSIS OF CRACKED OR BROKEN TRANSMISSION CASE. *TT 2006 AND PRIOR CARS AND LIGHT DUTY TRUCKS. *TT Read More »
VISIBILITY
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TSB #01667
WINDOW REGULATOR MOTOR DOES NOT FIT. *TT Read More »