EQUIPMENT
1994 Am General Hummer
Recalls, owner-reported complaints, investigations and safety data
Data refreshed
Overview
Our database contains 2 NHTSA owner-reported complaints for the 1994 Am General Hummer, most frequently naming the body & structure, brakes and heating & air conditioning categories. 4 safety recalls have been issued covering this model year; and 22 manufacturer communications are on file.
Complaints are reports submitted by owners and drivers to NHTSA. They are not verified and do not establish that a defect exists.
Complaint activity over time
When owners filed reports about this model year
Not enough dated records to plot a meaningful trend — 2 months of data.
What owners report
Complaints grouped by the component NHTSA recorded
- Body & structure114.3%
- Brakes114.3%
- Heating & air conditioning114.3%
- Interior & seats114.3%
- Powertrain (other)114.3%
- Transmission114.3%
- Visibility114.3%
Percentages are of component mentions. A single complaint can name more than one component, so these do not sum to the total complaint count.
Safety recalls
4 campaigns cover this model year
Recalls apply to specific vehicles, not to every vehicle of a model year. Check your VIN with NHTSA or your manufacturer's dealer to confirm whether a recall affects your vehicle.
Check a VIN on NHTSA.govVEHICLE SPEED CONTROL:ACCELERATOR PEDAL
VEHICLE SPEED CONTROL
Recent owner complaints
Reports submitted to NHTSA, shown in the owner's own words
STRESS FRACTURES IN THE TRANSFER CASE ALUMINUM INTERCOOLER LOOP OF THE AUTOMATIC TRANSMISSION COOLING CIRCUIT CAUSED DESTRUCTION OF THE TRANSMISSION DUE TO LACK OF TRANSMISSION OIL. THIS SAME DEFECT HAS BEEN NOTED IN AT LEAST THREE AM GENERAL HUMMERS, AND A SUDDEN LOSS OF ATF FLUID MAY RESULT IN A CATASTROPHIC FAILURE OF THE TRANSMISSION AT SPEED, POSSIBLY CAUSING A CRASH. THE TRANSFER CASE INTERCOOLER LOOP IS INSIDE THE TRANSFER CASE OF THE HUMMER. TRANSMISSION FLUID FROM THE 4L80E AUTOMATIC TRANSMISSION CIRCULATES THROUGH THIS ALUMINUM FINNED COOLING LOOP AND TRANSFERS HEAT TO AND FROM THE TRANSFER CASE FLUID, WHICH IS PHYSICALLY ISOLATED FROM THE TRANSMISSION FLUID BY THE INTERCOOLER LOOP, TO THE TRANSMISSION FLUID, WHICH IS THEN CIRCULATED THROUGH THE TRANSMISSION OIL COOLER AT THE FRONT OF THE VEHICLE AND RETURNED TO THE TRANSMISSION. DUE TO IMPROPER DESIGN, THE INTERCOOLER LOOP MOVES AND VIBRATES INSIDE THE TRANSFER CASE AND OVER TIME DEVELOPS STRESS FRACTURES NEAR THE INPUT NIPPLE. THIS CAUSES ATF TO BE PUMPED FROM THE TRANSMISSION INTO THE TRANSFER CASE, AND FROM THERE INTO THE HUMMER VENT SYSTEM WHICH CONNECTS THE GEARED HUBS, DIFFERENTIALS AND AIR CLEANER. THERE IS USUALLY NO EXTERNAL INDICATION OF FLUID LOSS, AND EVENTUALLY, DEPENDING ON THE SEVERITY OF THE CRACKS, LOW ATF LEVELS CAUSE THE TRANSMISSION TO BE DESTROYED, POSSIBLY CATASTROPHICALLY, AND POSSIBLY AT HIGH SPEEDS, WHICH MAY POSE A SEVERE SAFETY HAZARD. IN MY CASE, I NOTICED A CLOUD OF WHITE SMOKE BEHIND MY VEHICLE AS I DROVE AT 75 MPH DOWN I-25 OUTSIDE DENVER. I WAS ABLE TO STOP BEFORE THE TRANSMISSION SEIZED, BUT THE ONLY REASON I NOTICED THE PROBLEM WAS BECAUSE A PLASTIC VENT LINE SOFTENED AND RUPTURED, SPILLING ATF ONTO THE EXHAUST PIPE...WHICH CREATED A SIGNIFICANT FIRE HAZARD. MY TRANSMISSION WAS DAMAGED AND HAD TO BE REPLACED AS A RESULT, AND THE CAUSE OF THE FAILURE WAS TRACED TO THE DEFECTIVE INTERCOOLER LOOP IN THE TRANSFER CASE. THIS INTERCOOLER LOOP FAILURE HAS BEEN EX
- NHTSA ID
- 700469
- Incident
- Oct 1, 1996
HEAT SHIELD RATTLES. MJS
- NHTSA ID
- 511388
- Incident
- Aug 9, 1996
Manufacturer communications
A bulletin sent by a manufacturer to its dealers. Not a recall, and repairs are not necessarily free.
EQUIPMENT:MECHANICAL:WINCH
WINCH CONTROL PACK. *MJ
STRUCTURE:BODY
SUBJECT REGARDING CARGO AREA LINER. *SB
STRUCTURE:BODY:DOOR
SUBJECT REGARDING REVISED FRONT DOOR ARMREST. *TT
EQUIPMENT
THIS BULLETIN MENTIONS THAT STARTING WITH THE SEPTEMBER GENERAL MOTORS TIS UPDATE, HUMMER DIAGNOSTIC INFORMATION IS INCLUDED FOR THE TECH 2 SCANNER. THE SOFTWARE WILL INCLUDE DIAGNOSTIC TROUBLE CODE (DTC) RETRIEVAL, DATA STREAM ACCESS, SNAP SHOT CAPABILITIES, VIN AND CALIBRATION IDENTIFICATION AND MODULE FLASH CAPABILITIES. *TT
VISIBILITY:DEFROSTER/DEFOGGER/HVAC SYSTEM
SUBJECT ON MAIN HVAC UNIT SERVICING. *YC
VISIBILITY:DEFROSTER/DEFOGGER/HVAC SYSTEM
SUBJECT ON HVAC ENHANCEMENT. *YC
Manufacturers file copies of the bulletins they send to dealers with NHTSA. These often describe diagnostic or repair procedures for a known condition. They are not recalls: repairs described in a bulletin are usually only free if the vehicle is still under warranty or the manufacturer has extended coverage.
Compare model years
Complaint and recall counts across every year of this model
Higher-selling and older vehicles accumulate more reports. Counts are not failure rates and are not directly comparable between vehicles that sold in very different numbers. Older model years have had longer for reports to accumulate.