Category Archives: Service Bulletins

95-02-2: Accelerator Cable Adjustment

Models Affected: 1994-95 Vehicles With Gasoline Or 6.5L Diesel Engines Some of the above listed Hummer vehicles may experience poor performance driveability symptoms that can be resolved by performing an accelerator cable adjustment. Therefore, before making other adjustments, ensure that the accelerator cable adjustment is achieving wide-open-throttle (WOT) by performing the inspection/adjustment outlined in this…
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95-02-1: Tachometer Installation Kit

Models Affected: All 1995 Vehicles Two tachometer kits have been developed for 1995 vehicles. The installation and mounting hardware for both kits are the same. The only difference between the kits is the tachometer. Kit 05744260 is for installation on the Diesel engine vehicles. Kit 05744261 is for installation on the Gas engine vehicles. INSTALLATION…
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94-29-25: Drive Belt Usage

Models Affected: All 1992 and 1993 Vehicles Reports are being received concerning premature drivebelt wear on 1992 and 1993 vehicles. Various Dealer Service Bulletins have been issued addressing 6.2L diesel engine accessory and drivebelts. These include enhancements for air conditioning compressor mounting brackets, alternator mounting nuts, and proper drivebelt tensioning procedures. During the next service…
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94-12-1: Drive Belt Deficiencies

Models Affected: ALL 92 and 93 Vehicles When installing a new drive belt, the tensioning of the belt is most important to minimize belt slippage. Use the following procedure for setting the tension: Use a belt tension gauge, place the gauge at the center of the greatest span and tension the new alternator belt to…
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94-08-1: Hot Engine Restart

Models Affected: Vehicles with 6.2 and 6.5 liter Diesel Engines Occasionally an engine will not start after a shutdown period of approximately 15-30 minutes. This condition can occur when the ambient temperature is high and the diesel fuel being used is not best suited for the particular climatic conditions. For example, the fuel injection pump…
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