AboutCAJUNSC/RAMBLER390 Expertise 1998 and NEWER questions ONLY!! I WILL REJECT QUESTIONS FROM 1998 BACK. Electrical diagnosis. Brake Diagnosis. Driveability, Service Engine Soon Lights. Some Engine mechanical. Tires and wheels. ABS. HVAC. Air Bag (SIR). Interior, seats, etc... 6.6L Duramax Diesel diagnosis. 6.5L diesel diagnosis. I WILL not answer Alignment questions OR carburetor questions. No heavy internal transmission
I need YEAR, MAKE and MODEL of vehicle, and ENGINE SIZE and TRANSMISSION type, IF applicable to the question.
I work at a Large, Busy GM Dealership
Last thing, my answers are JUST SUGGESTIONS and ADVICE and you should ALWAYS CHECK with your mechanic for proper diagnosis and repair.
Experience 18 Years GM Dealership experience as an "A" line tech. ASE MasterTechnician. 100% GM paper certified and working towards MTC Certification.
Education/Credentials High School graduate. No College or higher learning.
Question I have a 2002 GMC Envoy that has been a great car for the most part. Last month, as I was parking the car, I heard an unusual "blump" sound but thought that it was from turning too sharply. When I returned to the car, the lights would come on, power doors worked, radio, etc but the car wouldn't start. I had it jumped but even after driving it to charge the battery, the battery would not stay charged so I took it in and the mechanic said that it was in fact the battery. (The battery was ONLY 6 months old and I had not left anything on, i.e. lights, door open, etc. TODAY I made a left hand turn into a neighborhood and heard a terrible noise, a loud blump under the car; I thought something had fallen out from under my car. I got out and inspected underneath... nothing was there, not even a screw. Then when I drove away it made a grinding noise which grew louder as the speed increased from zero to 5mph. I pulled into the driveway and now the car won't back up. The stick moves into gear but the car won't. HELP!!!
Answer Hi
It sounds like the reaction sun shell inside the transmission has failed.
It is a fairly common problem.
I do hate to say, though it is an expensive repair.
It can run as high as $2000.00, depending on where you have it repaired and the cost of labor in your area.
I hope this helps
Good Luck
Pawl
