Chevrolet Avalanche 2006 — Reported problems

After purchasing my vehicle through a bank loan, the frame started to deteriorate resulting in suspension components to come loose and fall off. Lastly, rear driveshaft broke off, leaving me inoperable.

The vehicle was sold with significant rust damage to the underbody of the truck. The truck parts are rusted to a point the suspension, and axel are about to fall out. The truck is leaking gasoline due to the amount of rust. The power steering that they fixed after one day driving it had issues when sold is still having issues leaking fluid. It has been deemed unsafe to drive on road. The dealership sold the vehicle in unsafe conditions, and will not rectify the situation. I have documentation, and photos of the damage to the vehicle.

Brake lines rusted out. Apparently this is an issue for this year and many other model year vehicles. Considering the brakes stop the vehicle, this is a big safety issue, and very expensive to be fixed.

I WAS RECENTLY INVOLVED IN AN ACCIDENT WHERE I PASSED OUT WHILE OPERATING MY VEHICLE. I BELIEVE THAT CARBON MONOXIDE POISONING WAS THE CONTRIBUTING FACTOR THAT CAUSED THIS ACCIDENT. FAULTY EXHAUST MANIFOLD FASTENERS SEEMS TO BE AN ISSUE THAT COULD HAVE CAUSED THIS ACCIDENT. I WAS SHOCKED TO SEE THAT THERE IS NO RECALL FOR THIS PROBLEM. I HAVE INCURRED NUMEROUS PERSONAL EXPENSES DUE TO THE ACCIDENT, BUT FEEL LUCKY THAT THERE WERE NO SERIOUS INJURIES OR FATALITIES. I AM WRITING THIS TO CALL ATTENTION TO THE ISSUE IN HOPES THAT YOU WILL DO SOMETHING TO KEEP THIS FROM HAPPENING TO SOMEONE ELSE WHO MIGHT NOT BE AWARE OF THE ISSUE. I AM DISAPPOINTED THAT THERE HAS BEEN NO RECALL ON THIS PRODUCT. THE VEHICLE IS TOTALED, BUT COULD STILL BE EXAMINED TO FIND THE CAUSE.

VEHICLE HIT A TREE AND AIRBAGS DID NOT DEPLOY.

HEATED SEAT COMES ON BY ITSELF ALL THE TIME. IT HAS BURNED MY FATHER'S REAR END. I CHECKED IT OUT AND IT CAME ON 12 TIMES IN 5 MINUTES. MY FATHER IS OLDER AND DID NOT REALIZE HE WAS BURNING UNTIL IT WAS TOO LATE. I WAS TOLD BY THREE DIFFERENT DEALERS THAT THERE ARE NO SAFETY RECALLS FOR THIS. UPON READING HELP FORUMS, I DISCOVERED THEY DO HAVE A RECALL. I AM WAITING FOR A RESPONSE BEFORE I TAKE ANY FURTHER ACTIONS. THANK YOU

DRIVING DOWN THE ROAD THE TRUCK ENGINE WILL BE RUNNING WITH NO ABNORMAL SOUNDS, SMELLS, LEAKS BUT WILL ACT AS IF NOT IN GEAR. RPM'S WILL REV BUT TRUCK WILL NOT MOVE. ONLY AFTER PUTTING TRUCK IN PARK (LOTS OF GRINDING NOISES) THEN PRESSING THE 4WHEEL BUTTON THEN BACK TO 2WHEEL (SOMETIMES THROUGH TWO CYCLES) THE TRUCK WILL BACK INTO GEAR AND OPERATE PROPERLY. TOOK IT TO A TRANSMISSION SHOP PUT IT ON THE DIAGNOSTIC MACHINE AND NO ERROR CODES WERE GIVEN TO GIVE REASON WHY THE TRANSFER CASE DISENGAGES RANDOMLY. REPLACED THE TRANSFER SWITCH PER SHOP RECOMMENDATION "JUST IN CASE"IT WAS OKAY FOR ABOUT A MONTH THEN ONCE AGAIN ISSUES STARTED AGAIN JUST THE SAME AS BEFORE.

THE AIRBAG INDICATOR LIGHT IS ON AND OFF. TOOK IT TO SERIVE CENTERS THE LIGHT CAME OFF FOR A WEEK THEN CAME BACK AGAIN. MECHANIC TOLD ME THE SPRING COUL NEEDS TO BE REPLACED GOT IT REPLACED BUT THE PROBLEM IS STILL THE SAME. WHEN ITHE WEATHER IS COLD THE LIGHTS COMES OFF WHEN ITS WARM THE LIGHTS ARE ONE TOLD THE MECHANICS THEY SAID ITS THE CONNECTION THEY TRIED TO FIX LIGHT WILL COME OF FOR A FEW DAYS THEN BACK AGAIN. THE SECOND PROBLEM IS THE ENGINE LIGHT - THEY TOLD ME ITS THE FUEL EJECTION PUMP GOT IT REPLACED BUT NOT RESOLVED. I KEEP TAKING TTHE TRUCK BACK TO THE SERVICE CENTERS BUT AFTER A WEEK THE LIGHT INDICATORS ARE ON. I ALSO FAILED MY INSPECTIONS DUE TO THIS PROBLEM. THE ONLY REASON I PASS IS THAT IT HAS TO BE FIXED BUT AFTER INSPECTION THE LIGHTS ARE ON AGAIN. I HAVE READ ALL COMPLAINTS ABOUT THIS PROBLEMS BUT GMC MOTORS DOESN'T HAVE AN ACTIVE RECALL FOR IT ITS JUST A COMMUNICATION STATING THE PROBLEM. THE TRUCK IS STILL RUNNING BUT THIS SAFETY ISSUE NEEDS TO BE RESOLVED BY THE COMPANY. AND I THINK THATS PART OF THE REASON TGEY DONT MAKE THE AVALANCE ANYMORE.

BRAKE FAILURE. EXITING PARKING LOT ONTO CITY STREET BRAKES FAILED CAUSING COLLISION. AUTOMOTIVE REPAIR: BRAKE LINE CORRODED. LINES TO WEAK TO REPAIR. REPLACE BRAKE LINES PER GM KIT. REMOVE AND REPLACE ALL METAL BRAKE LINES FRONT AND REAR, PER BRAKE LINE KIT.

POOR QUALITY BRAKE LINES HAVE CORRODED MAKING THE BRAKE SYSTEM FAIL HARD BRAKING, HAD LINE RUPTURE DUE TO CORROSION, NEAR COLLISION DUE TO BRAKE FAILURE

REAR BRAKE LINES BURST WHILE I WAS IN MOTION. I WAS GOING DOWN THE HIGHWAY AND HAD TO USE THE GEARS TO SLOW DOWN. THEY WERE CORRODED THROUGH. SAME THING HAPPENED IN 2016 WITH MY FUEL PUMP LINE CORRODED THROUGH. WAS LEAKING WHILE I WAS DRIVING. DID NOT NOTICE FOR A FEW DAYS UNTIL THERE WAS PUDDLES OF GAS WHERE I PARK. OVER THE PAST FEW YEARS MY CLADDING HAS BEEN FALLING OFF FROM RUST THROUGH ON THE BOTTOM SECURE POINTS.

BRAKE LINES RUSTING OUT ON THESE AUTOS

I PURCHASED THE 2006 VEHICLE USED IN DEC 2013. IN 2014 THE TRANSMISSION WENT BAD. IN 2015 I REPLACED THE TRANSMISSION AND BRAKE PADS & ROADERS.2016 REPLACED THE FUEL PUMP BECAUSE IT ALSO WENT BAD, REPLACED TIRES (NORMAL WEAR), BOUGHT A NEW BATTERY BECAUSE IT DIED. 2017 IT NEEDED TWO HUB BEARING AND BOTH FRONT WHEEL HUB REPLACED. THIS IS AN ONGOING PROBLEM WITH THIS VEHICLE! I JUST FOUND OUT MY AIR BAG SENSOR WILL NEED TO BE REMOVED AND REPLACED. ALL MY MONEY HAS BEEN FLUSHED DOWN TO THIS VEHICLE. I DON'T RECOMMEND ANYONE BUYING A CHEVY TRUCK.

TRANSMISSION SLIPPING. WHEN TRAVELING AT SHIFT POINT 1-2, 2-3 THE ENGINE RPMS SUDDENLY INCREASE THEN RETURN TO NOMINAL SPEED. THE MILEAGE IS WAY TO LOW FOR THIS BEHAVOIR. I BELIEVE GM SHOULD ISSUE (OR PAY FOR) THE PARTS (THE TOUGHENED OR IMPROVED PARTS) TO CORRECT THIS PROBLEM OR RE-REIMBURSE THE CURRENT OWNER FOR THE RETAIL COST OF THE GM (IMPROVED) PARTS IF THE OWNER CHOOSES TO HAVE THE WORK DONE ELSE WHERE. THE SHIFTING ACTION IS NOT FIRM, IT'S SLOPPY. AT TIMES YOU CAN'T FEEL THE SHIFT IN THE CONVENTIONAL WAY BUT YOU CAN HEAR IT.

BRAKES FAILED COMING TO TRAFFIC LIGHT. PEDAL WENT TO FLOOR. WENT HALF WAY THRU BEFORE TRUCK STOPPED. INSPECTED AND FOUND REAR BRAKE STEEL LINE HAD RUSTED THRU AND HAD A HOLE. BRAKES SHOULD NOT RUST THRU IN ONLY TEN YEARS,

SUDDENLY AND WITHOUT ANY WARNING THE BRAKES FAILED WHILE ATTEMPTING TO STOP FOR TRAFFIC ON THE HIGHWAY. THE BRAKE PEDAL WENT TO THE FLOOR AND IT APPEARED THAT ALL BRAKING HAD BEEN LOST. THE CAR WAS NAVIGATED TO THE SHOULDER AND THE PARKING BRAKE WAS USED TO COME TO A FULL STOP. IF THE BRAKE PEDAL WAS ENGAGED AND THE PARKING BRAKE RELEASED, THE CAR WOULD BEGIN TO MOVE AGAIN. THIS APPEARED TO INDICATE ANY REDUNDANCY IN THE SYSTEM WAS ABSENT.

AIR BAGS WARING LIGHT ON.

I BACKED OUT OF MY DRIVEWAY STOPPED MY TRUCK LIKE ALWAYS PUT IT IN D TO DRIVE HEARD A LOUD CLUNK NOISE AND NOW I HAVE 1 AND 2 GEAR ONLY TO USE THE TRUCK WAS STATIONARY WAS ON A MAIN ROAD I CHANGED THE TRANSMISSION FLUID SCREENS FILTERS EVERYTHING FLUSHED IT OUT AND STILL THE SAME THING A LOT OF PEOPLE ARE SAYING IT'S THE SPRAG UNIT I HAVE NO IDEA WHAT THAT IS I HAVE ONLY HAULED A FEW THINGS WITH IT WHEN WE WERE MOVING WE ONLY MOVED EIGHT MILES DOWN THE ROAD USED A TRAILER AND THE TOW GEAR THAT IS ON THE TRUCK. ALSO ABOUT A MONTH BEFORE THIS HAPPENED THE STABILITY SYSTEM LIGHT CAME ON AND SAID DISABLED BUT HAS NOT DONE IT SINCE ALSO MY TRUCK IS VERY CLEAN ALWAYS SERVICED ACCORDING TO THE MANUAL AND IS IN VERY VERY GOOD CONDITION

RUSTED BRAKE LINES

TAKATA RECALL TRANSMISSION SUDDENLY STOPPED. ONLY DRIVES IN FIRST GEAR, HAS 70,000 MILES, HAS BEEN MAINTAINED. WHILE DRIVING ON 128 SOUTH IN DANVERS, MA AT 4:30 THE TRUCK BECAME SLUGGISH, GREW WORSE WITH IN SECONDS CAUSING MY TOP ACCELERATION TO DECREASE TO 20 MPH AT BEST, WAS ABLE TO GET OFF AFTER A MILE AND SPEED DECREASED TO 10 MPH. I LOST ALL GEARS ASIDE FROM FIRST. I HAVE INQUIRED WITH A FEW MECHANICS GETTING MIXED ANSWERS RANGING FROM TOTAL REBUILD TO SOLENOIDS. TRUCK IS DEAD WITH 70,000 MILES.

TL* THE CONTACT OWNS A 2006 CHEVROLET AVALANCHE. THE CONTACT STATED THAT THERE WAS A FUEL ODOR AND THAT FUEL WAS NOTICED LEAKING FROM UNDER THE VEHICLE. THE FAILURE RECURRED. THE VEHICLE WAS TAKEN TO AN INDEPENDENT MECHANIC WHERE THE TECHNICIAN INFORMED THAT THE HOSE WAS RUBBING IN THE FUEL TANK CAUSING A HOLE ON THE FUEL LINE. THE VEHICLE WAS NOT REPAIRED. THE MANUFACTURER WAS NOTIFIED OF THE FAILURE. THE APPROXIMATE FAILURE MILEAGE WAS 165,000.

DRIVING 35MPH ON DRY ROAD. 2WD JUMP OUT OF GEAR ACTED LIKE WENT INTO NEUTRAL I HAD NO DRIVE OR ANY OF MY GEARS CAME TO A COMPLETE STOP WITH NO WARNING. WENT TO PUT IN PARK IT GRIND WITH LOUD NOISE. ONLY WAY TO GET TRUCK TO MOVE WAS TO PUT IN 4WD

I MADE A STOP, UP ON TAKING OFF MY TRUCK MADE IT TO SECOND GEAR AND I HEAR A LOUD BROKEN NOISE, TRANSMISSION WENT OUT ON SECOND GEAR.

FOR NO REASON AND WITHOUT WARNING, AFTER A "CLUNK" NOISE THE TRUCK WAS COASTING. ONLY 1ST, 2ND, AND REVERSE GEARS WORK.

TL* THE CONTACT OWNS A 2006 CHEVROLET AVALANCHE. WHILE DRIVING APPROXIMATELY 25 MPH AND COMING TO A STOP, THE BRAKE LINE DETACHED FROM THE VEHICLE. THE FAILURE RECURRED TWICE. THE VEHICLE WAS NOT DIAGNOSED OR REPAIRED. THE MANUFACTURER WAS NOT MADE AWARE OF THE FAILURE. THE FAILURE MILEAGE WAS 152,000.

THE WARNING FOR AIRBAG MALFUNCTION /INOPERATIVE. CAME ON TOOK INTO DEALER THEY DIAGNOSED IT AS BAD MODULE . THEY REPLACED IT . 6MO LATER SAME ISSUE THE DEALER DIAGNOSED IT AS BAD CONTACTS . SO THE DEALER CLEANED THEM LIGHT WENT OUT FOR 6 MO. AND CAME BACK ON . I CALLED DEALER THEY SAID WARRANTY RAN OUT .BUT I COULD TALK TO DISTRICT MANAGER ABOUT ISSUE . AT WHICH HE TOLD ME I NEEDED A NEW AIRBAG WHICH WOULD COST OUT OF POCKET 3000 DOLLARS . I ANSWERED THAT ISSUE HAS BEEN GOING ON SINCE IT WAS UNDER WARRANTY AND ISSUE STILL NOT SOLVED. HIS ANSWER WAS THEN HE WOULD CHARGE ME 1500 . YEAR LATER THERE WAS A BULLETIN ON THIS ISSUE AS IT WAS THE CLOCK SPRING UNDER THE AIRBAG THAT IS THE ISSUE . HAVE NOT HEARD FROM CHEVROLET SINCE NOW WITH ARCING IN DASH BOARD AND THNP8 CONTROL SWITCH GOING OUT FOR THE SECOND TIME THIS EQUIPMENT ON CHEVROLET VEHICLES DANAGEROUS. *TR

TL*THE CONTACT OWNS A 2006 CHEVROLET AVALANCHE 1500. THE CONTACT STATED THAT WHILE DRIVING AT APPROXIMATELY 55 MPH, THERE WAS SMOKE COMING FROM THE VEHICLE AND IT SUDDENLY CAUGHT ON FIRE WITHOUT WARNING. THE FIRE DEPARTMENT EXTINGUISHED THE FIRE. THE CONTACT DID NOT DISCLOSE IF A POLICE/FIRE REPORT WAS FILED OR NOT. THE VEHICLE WAS TOWED TO AN INDEPENDENT MECHANIC WHERE IT WAS DEEMED DESTROYED. THE MANUFACTURER WAS NOT MADE AWARE OF THE FAILURE. THE APPROXIMATE FAILURE MILEAGE WAS 147,000.

I HIT SOMEONE IN THE BACK OF HIS CAR AND DID A LOT OF DAMAGE ON MY TRUCK AND MY AIR BAGS DID NOT OPEN. THE REPAIR SHOP ALSO ? WHY. THE FRONT OF MY TRUCK WAS PUSHED BACK APPROX. 6 TO 10 INCHES. *TR

TL* THE CONTACT OWNS A 2006 CHEVROLET AVALANCHE. THE CONTACT STATED THAT WHILE STARTING THE IGNITION, A STRONG BURNING ODOR EMITTED INSIDE OF THE VEHICLE. THE CONTACT NOTICED THAT THE HEATER BLOWER WIRE HARNESS AND RESISTOR MELTED. THE CONTACT REPLACED THE RESISTOR PERSONALLY BUT THE FAILURE PERSISTED. THE MANUFACTURER WAS NOT NOTIFIED OF THE FAILURE. THE APPROXIMATE FAILURE MILEAGE WAS 150,000.

TL* THE CONTACT OWNS A 2006 CHEVROLET AVALANCHE. THE CONTACT STATED THAT THE HEADLIGHTS FAILED TO OPERATE PROPERLY. THE CONTACT PERSONALLY DIAGNOSED THE VEHICLE AND FOUND THAT THE AUTOMATIC HEADLIGHT CONTROL SWITCH HAD FAILED. THE VEHICLE WAS REPAIRED BY THE CONTACT. THE MANUFACTURER WAS CONTACTED ABOUT THE FAILURE. THE FAILURE MILEAGE WAS 24,862. UPDATED 12/26/13*LJ THE CONSUMER STATED WHAT HE SAW INSIDE THE SWITCH, WAS OLD BURNT CLEAR PLASTIC MELTED DOWN, HALF OF THE SWITCH WAS WORKING AND THE OTHER HALF WAS MALFUNCTIONING. THE DEFECTIVE SWITCH WAS DRAINING THE BATTERY. UPDATED 12/31/13

TL* THE CONTACT OWNS 2006 CHEVROLET AVALANCHE. THE CONTACT STATED THAT WHILE DRIVING 35 MPH, SHE ATTEMPTED TO APPLY THE BRAKES TO AVOID CRASHING INTO ANOTHER VEHICLE BUT THE BRAKES FAILED. THE CONTACT SHIFTED INTO A LOWER GEAR IN ORDER TO STOP THE VEHICLE. THE VEHICLE WAS TOWED TO THE DEALER FOR INSPECTION WHERE THEY STATED THAT THE BRAKE LINES NEEDED TO BE REPLACED. THE VEHICLE WAS NOT REPAIRED. THE MANUFACTURER WAS NOTIFIED AND STATED THAT THEY WOULD COVER THE REPAIR COSTS. THE FAILURE MILEAGE WAS 44,000. ..UPDATED 01/30/13 *BF UPDATED 2/5/2013 *JS

MY "SERVICE AIR BAG" LIGHT HAS STEADILY BEEN ON FOR A FEW WEEKS, CHECKED THE FUSE, CHECKED BASIC CONNECTORS (NO LOOSE WIRES). HAVE BEEN DOING INTERNET RESEARCH & FOUND MANY FORUM DISCUSSIONS ON THIS TOPIC DATING BACK TO 2003! I SEARCHED THIS SITE & FOUND THAT THERE HAS BEEN NO RECALL RELATED TO THIS ISSUE. CONSIDERING ONCE THIS "SERVICE" LIGHT IS ON, THE AIRBAGS WILL NOT WORK IN THE EVENT OF A CRASH, WHY HASN'T THERE BEEN A RECALL?? I AM DEFINITELY NOT EXCITED ABOUT GOING TO THE DEALER TO SEE WHAT THEY'RE GONNA CHARGE TO LOOK AT THE ISSUE & THEN FIND OUT WHAT THEY WILL CHARGE TO REPAIR THE ISSUE, ALTHOUGH MANY OWNERS HAVE RETURNED TO THEIR DEALERS MULTIPLE TIMES FOR THE SAME "FIX". THIS SHOULD BE FREE OF CHARGE TO DIAGNOSIS & REPAIR CONSIDERING IT IS A MAJOR SAFETY ISSUE! *TR

HVAC BLOWER DID NOT FUNCTION ON CERTAIN OR ALL BLOWER SPEEDS. THE HVAC BLOWER RAN CONTINUALLY WITH THE IGNITION IN THE OFF POSITION AND THE KEY REMOVED. *TR

WHEN TAKING OFF FROM A STOP IT FEELS LIKE I AM BEING BUMPED FROM BEHIND, OR LIKE THE ENGINE JUST DROPPED OUT OF THE VEHICLE. VERY HARD SHIFTING BETWEEN 1ST, 2ND AND 3RD WHEN VEHICLE HAS BEEN DRIVEN ABOUT 50 MILES CONSECUTIVE. CHECK ENGINE LIGHT IS ON BUT WILL GO OFF INTERMITTENTLY. *TR

THE SERVICE AIR BAG LIGHT CAME ON AND HAS REMAINED ON. WHILE RESEARCHING THE ISSUE IT APPEARS THIS IS A VERY COMMON ISSUE IN THIS TRUCK. DUE TO THE SAFETY CONCERNS AND THE QUANTITY OF PROBLEMS, CHEVROLET SHOULD BE REQUIRED TO REPAIR THE ITEM. THEY ARE AWARE OF IT SINCE THEY SENT OUT A SERVICE BULLETIN. *TR *JS

I WAS DRIVING ALONG AT 60 MPH AND LIGHTLY ACCELERATED AND HEARD A CLUNK. I CONTINUED TO DRIVE ALONG AND SLOWED DOWN TO EXIT OFF THE INTERSTATE. THEN WHEN GOT OFF THE INTERSTATE AND CAME UP TO A GREEN ARROW AND TURNED LEFT. THEN AS SOON AS I ACCELERATED AT 25 MPH, I FELT THE TRANSMISSION GO OUT AND HEARD A HIGH PITCH WHINE AND SOME GRINDING. THEN WAS NOT ABLE TO ACCELERATE ANYMORE. *TR

AIRBAG LIGHT CAME ON, DASHBOARD SAYS SERVICE AIRBAG, AFTER VEHICLE SAT FOR AN HOUR AFTER HAVING BEEN DRIVEN FOR OVER 250 MILES THAT DAY. WHEN THE VEHICLE IS STARTED THE LIGHT BLINKS AS IT'S SUPPOSED TO AND GOES OUT, THEN AFTER A FEW SECONDS COMES BACK ON AND STAYS ON. *TR

SERVICE AIR BAG WARNING STAYS ON AT ANY SPEED AND THE AIR BAGS WILL NOT DEPLOY IN AN ACCIDENT! DEALER SAYS GM ONLY HAS A SERVICE BULLETIN ON THE PROBLEM BUT NO RECALL YET! IS GM LIABLE IN AN ACCIDENT IF THE AIR BAGS FAIL TO DEPLOY? *TR

TL*THE CONTACT OWNS A 2006 CHEVROLET AVALANCHE. THE CONTACT STATED THAT THE TRANSMISSION FAILED WHILE HE WAS DRIVING APPROXIMATELY 60 MPH. HE WAS UNABLE TO MOVE FORWARD ALTHOUGH THE RPMS INCREASED. THERE WERE NO WARNING LIGHTS PRIOR TO THE FAILURE. THE VEHICLE WAS TAKEN TO A TRANSMISSION CENTER WHERE THE TRANSMISSION WAS REPLACED. THE CONTACT CALLED THE MANUFACTURER AND FILED A COMPLAINT ABOUT THE FAILURE. THE CURRENT AND FAILURE MILEAGES WERE APPROXIMATELY 90,000.

2006 CHEVROLET AVALANCHE 1500 4WD IN 2WD HI, DRIVING AT 55 MPH WITH TRANSMISSION IN D, ENGINE REVVED FREELY AS IF TRANSMISSION IN NEUTRAL. COASTED TO A STOP ONTO SHOULDER, SHIFTED INTO PARK, RELEASED FOOT BRAKE, VEHICLE BEGAN TO ROLL FORWARD (DOWNHILL), APPARENTLY BECAUSE TRANSFER CASE SHIFTED INTO NEUTRAL. SES INDICATOR NOT ON. TURNED OFF ENGINE. NO CODES (HAD CODE READER IN GLOVE BOX). TURNED ENGINE ON, SHIFTED TRANSMISSION INTO D AND FELT TRANSMISSION ENGAGE (APPARENTLY, TRANSFER CASE HAD ENGAGED FROM NEUTRAL). ACCELERATED GRADUALLY AND DROVE DOWN HIGHWAY FOR 1/4 MILE AND WHEN ACCELERATOR PEDAL WAS RELEASED, TRANSFER CASE SHIFTED INTO NEUTRAL, AGAIN, ENGINE REVVING FREELY WITH TRANSMISSION STILL IN D. COASTED TO A STOP ON SHOULDER, PRESSED 4WD HI AND FELT TRANSFER CASE ENGAGE, PRESSED 2WD HI AND FELT TRANSFER CASE DISENGAGE BUT NOW IN 2WD HI INSTEAD OF NEUTRAL. ACCELERATED GRADUALLY AND DROVE DOWN HIGHWAY AND WHEN ACCELERATOR PEDAL WAS RELEASED, TRANSFER CASE SHIFTED INTO NEUTRAL, AGAIN, ENGINE REVVING FREELY WITH TRANSMISSION STILL IN D. COASTED TO A STOP ON SHOULDER, AND REPEATED ABOVE SEQUENCE ON TRANSFER CASE TO SHIFT INTO 2WD HI. SHIFTED TRANSMISSION INTO 3, ACCELERATED GRADUALLY AND DROVE DOWN HIGHWAY, TRANSFER CASE REMAINED IN 2WD HI. SLOWED DOWN TO A STOP ON SHOULDER, TURNED OFF ENGINE, RESTARTED ENGINE AND SHIFTED TRANSMISSION INTO D, ACCELERATED GRADUALLY AND DROVE DOWN HIGHWAY AND WHEN ACCELERATOR PEDAL WAS RELEASED, TRANSFER CASE SHIFTED INTO NEUTRAL ONCE AGAIN. AFTER COASTING TO A STOP, REPEATED SEQUENCE TO ENGAGE TRANSFER CASE INTO 2WD HI, SHIFTED TRANSMISSION INTO 3 AND DROVE VEHICLE TO MECHANIC. STILL DIAGNOSING ISSUE. *TR