1991 Chevrolet Astro TSBs
9 Technical Service Bulletins across 3 categories
Categories
Engine
5 bulletinsRECALL 91-C-50 - GENERAL MOTORS HAS DETERMINED THAT CERTAIN 1991 CHEVRTOLET C/K TRUCKS, M/L AND G VANS EQUIPPED WITH...
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4.3L ENGINES [RPO LB4 OR RPO LU2 (M VAN ONLY)] MAY BE EMITTING NON-METHANE HYDROCARBONS (NMHC) IN EXCESS OF CALIFORNIA EMISSIONS STANDARDS. CALIFORNIA EMISSIONS STANDARDS WERE ESTABLISHED TO PROTECT THE PUBLIC HEALTH AND WEALFARE FROM DANGERS OF AIR POLLUTION. EXCESS EMISSION OF NMHC MAY CAUSE A VEHICLE TO FAIL STATE MANDATED EMISSION TESTS. TO CORRECT THIS CONDITION, DEALERS ARE TO INSTALL A NEW OXYGEN SENSOR. *TW
COLD 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
1 bulletinOIL PRESSURE GAUGE READING CONCERNS.
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*TW