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Prev Professional Automotive Repair Technical Discussions for June 22, 2005
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Open Help Requests for GM
Help Request Answers
1996 Buick Regal 3.8L Cuts out, Stall VIN: 2G4WF5211V
Vehicle came in with a stalling problem. The vehicle will start but stall within 5 seconds. The vehicle will restart every time without hesitation. I am able to keep it running but only if I rev it to 3500 + rpms. If I drop even close or below it, the vehicle ...
1996 Buick Skylark Custom 3.1L anti-theft system VIN: 1G4NJ52M9T
hello techs, i have a 1996 buick skylark that starts, then stalls immediately. i have done the relearn process with the key then it will run. i scaned codes p1573 loss abs serial data in currant codes & p1626 anti-theft system in history codes. the ignition s...
1994 Cadillac DeVille Concours 4.6L Surge VIN: 1G6KF52Y4R
this car has been to two wirer techs two cumputer techs have changed both crank pisition sensors have been all over this car need this thing out of my shop Trouble codes: P0047, P0080, P0107, P0137
1996 Cadillac DeVille 4.6L 4th gear
Vehicle works good until 5 miles or so down the road. When I come to a stop, it shifts all the way through to 4th and 4th does not engage , but just slips. I removed the unit but didn't find any specific reason for this condition. Lower vavle body channel plat...
1992 Chevrolet C2500 Cheyenne 6.2L Solenoid B VIN: 1GCGC24F0N
I have this pickup with a 4L80-E, and code 81 (shift solenoid B circuit). As stated below a new repair harness has been installed, as well as a new TCM from the dealer. We verified that the job was done correctly, and we had the proper voltages. I am familier ...
1994 Chevrolet C2500 Cheyenne 6.5L engine VIN: 2GCFC29S3R
Hello fellow techs, Have a 1994 Chev C2500 with a/c on and using cruise control the vehicle/engine experiences a hiccup (which is quite noticeable and annoying I must say) everytime the a/c cylces on. The vehicle works perfectly as does the a/c as long as you ...
1999 Chevrolet Blazer 4.3L Odometer VIN: 1GNDT13W5X
We have just replaced engine in vehicle and odometer/trip meter only does not illuminate (customer says was working before repair). Speedometer working, cluster illuminates, etc... speedometer reads with scanner and equal to actual speedometer. All connector...
2003 Chevrolet Silverado 2500 6.0L IDC displays "SERVICE BRAKE BOOSTER" VIN: 1GCHC24U23
The Instrument Panel Communications message reads "SERVICE BRAKE BOOSTER" when the key is turned on and comes back on after the engine is started. Finally found that disconnecting the battery turned OFF the message, but to my chagrin, it came ON the next day a...
2004 Chevrolet Corvette Z06 5.7L MIL Lamp on VIN: 1G1YY12S84
after initial install of new maf sensor vehicle driven 68miles reset both codes. I got vehicle and went thru it and reflashed ecm and codes reset in 25miles.When you reset fuel trim in service bay the engine will lope and o2 volts will be at .052 volts,short t... Trouble codes: P0171, P0174
1993 Oldsmobile Cutlass Supreme 3.4L ignition module VIN: 1G3WH51X8P
hi. need some direction here. car was towed in as no start. check electrical systems including sensors. trail led to ignition module. replaced same and car started and ran great- napa module. after short road test car stalled. on restart misfire and no start r...
1993 Oldsmobile Cutlass Ciera 3.3L No Start VIN: 1G3AG53N6P
going no where fast with this cutlass. Drove in for an intermentent no start after it was hot. Got it to act up last week and it had no spark or pulse, but had fuel pressure. Cust dropped the car off on monday and we couldn't get it to act up at all. Decided t...
1998 International 4000 4800 7.6L engine VIN: 1HTSCAAM5W
This truck was brought in for a problem of overheating on the highway. It runs cool in town at about 180 degrees but after driving on the highway in hot temperatures it will run up to the 230 degree mark and spew out anti freeze. We have recently had the radia...
1994 Pontiac Bonneville SE 3.8L TCC Lockup VIN: 1G2HX52L8R
This is a strange one to explain, so please bear with the long description. This is my personal car, so any suggestions are welcome. The first time the transmission shifts into overdrive, it will stay in overdrive for 10 seconds, but then drop back into 3rd ge...
1995 Pontiac Grand Am SE 3.1L No Start VIN: 1G2NE15M0S
Hello, This car was running fine and was shut off normally and has not started since. Has code 82, 3X signal error, which resets as soon as it is cleared and the car is cranked. We have checked the crank sensor and have seen the 3X signal amplitude is good, bu... Trouble codes: 82 (no 3x signal error)
1999 Pontiac Grand Am SE 2.4L Stall VIN: 1G2NE52T3X
i know, no one likes to work on a 2.4 but i figure someone has got to know about this. Customer had a complaint for a "noise" , found a rather big vacuum leak at the elbow of brake booster vacuum line coming out of throttle body. Repaired it. Now car has a sli...
2002 Pontiac Grand Am SE1 3.4L anti theft system VIN: 1G2NF52F92
vehicle starts and runs, but security light is on all the time when the vehicle is running. Any ideas? Thanks Pete

Fixes & Summaries for GM
Fix/Summary Answers
1969 Buick Riviera GS 430CID MAster cylinder? VIN: 494879H945
First, thanks to all of you who took your valuable time to reply. Several suggested checking primary & secondary shoes were placed right. I should've listed in the original post, all basic checks were made, shoe placement, no hydraulic leaks, shoe adjustment, ...
1993 Buick LeSabre Custom 3.8L 2-1 shift VIN: 1G4HP53L8P
thanks to all the professional for your advice. most of the advice pointed at the low roller(sprag) clutch. i did discover that when the trans does goe into neutral if i pull it in to manual low it will go back into gear. here is the kicker... because of the m...
1994 Buick Regal Custom 3.1L Coolant temp guage VIN: 2G4WB55M6R
After double checking all the power and the grounds. We checked the resistance of the sending unit and decided that it should be reading right. We changed back to the old cluster and the only guage that was reading wrong was the coolant temp guage. After runni...
1990 Cadillac Eldorado 4.5L no power VIN: 1G6KS533LU
Thanks for the information. Most replies indicated timing issue \distributor gear. We went back to the scope and double checked every thing...Real lean...We did not check the injectors or the scope pattern closely enough...Blown fuse to 4 injectors...Eddie But...
1997 Chevrolet S10 LS 4.3L Poor Idle Quality VIN: 1GCCS19X8V
thanks to all who replied. the fuel pressure was less than the required minimum. the customer traded the p-u to the dealer. they were going to recheck the pressure and replace the pump as needed. thank you for your help
2000 Chevrolet Blazer LS 4.3L Hesitation, "pops thru intake" VIN: 1GNDT13W7Y
Thank you to all who replied!! DONT FORGET THE BASICS!!! The feul filter took care of it Thanks
2001 Chevrolet Cab & Chassis Silverado 3500 6.0L Hesitation VIN: 1GBJC34U91
well iatn members, seems we have done it again. with your help this truck is fixed. numerous replies stating to check fuel regulator and injector connections. no problems found there. the spark plugs were partially fouled from all the rough running. replaced t...
1999 GMC Sierra 1500 SL 5.3L servics 4wd lamp VIN: 2GTEK190X1
Thank you all for the help. The customer has an appointment for repair next week. I will post again if the switch does not repair the problem. Thanks Again
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