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Prev Professional Automotive Repair Technical Discussions for June 12, 2007
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Open Help Requests for GM
Help Request Answers
1995 Buick LeSabre Custom 3.8L lost ground circuit VIN: 1G4HP52L1S
i need a schematic on the ground circuit for the door locks, window motor and fuel pump. i am loosing ground on these circuits causing a no fuel pump operation. if you have a detailed oem schematic with location and circuit # comes together for a ground i woul...
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2007 Buick LaCrosse CXS 3.6L tpms sensor VIN: 1G2WC12V37
Hello, After replacment of a tire pressure sensor tpms ligth is on and vechile display dashes --- for the right front tire pressure. After disconnecting the battery and driving the car it now the light is out but the pressure reads 129 psi. does the new sensor...
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1998 Cadillac DeVille 4.6L Power Steering VIN: 1G6KD54Y2W
Power steering is inop turning right only, left turns are fine. The problem went from intermittent to full time in a span of about two weeks. I unfortunately dont have a lot of access to testing equipment to check output pressures due to working on a militar...
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2002 Cadillac DeVille 4.6L convertor VIN: 1G6KD54Y82
No codes, no pending codes. Chuggle on light load and sometime barely perceptible on deceleration. Has new torque convertor and solenoid as per Cadillac bulletin. Misfire graphic may show 2 to 4 misfires on an occurance. Problem occurs after driving about 10 m...
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2004 Cadillac DeVille 4.6L Door locks VIN: 1G6KD54Y44
This car has been checked over and over. We are friendly with a GM tech and he checked this with the Tech 2 scan tool and came up blank. I can tell you that the only thing that affects this car is that when you lock the car with the remote, there is a 3.3amp d...
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1993 Chevrolet Camaro Indianapolis 500 Pace Car 5.7L No Start VIN: 2G1FP22P9P
I am replacing the distributor on this camaro because of a no-start condition. After following the factory manual procedure for replacement I discovered the rotor had melted and had spun approximately 45 degrees. Now I don't know EXACTLY where to index the new...
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1999 Chevrolet Astro 4.3L ABS speed sensor VIN: 1GBEL19W3X
Hello. I got this Astro van in with abs light going on while driving and sometimes the abs would activate on stops. Checked it out and found a code for right front abs speed signal erratic. C0223. First I tried cleaning the sensor and the the mounting surface....
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2000 Chevrolet Blazer LS 4.3L Poor Idle Quality, Misfire, MIL Lamp on VIN: 1GNDT13W7Y
hello, i would likeany help on blazer, shows only misfire at #4.ltft on bank 2 only -15% bank 1 near 0. disconnecting small vacuum hose stops misfire count Trouble codes: P0304 (4 cyl. misfire)
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2001 Chevrolet Camaro 3.8L Security System VIN: 2G1FP22KX1
This camaro came in with a bad rap relay internal to the body control module. Replaced the body control module with new one from dealer. Went through the reprogram and relearn procedure specifed in AllData, everything work properly except the theft deterent sy...
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1996 GMC K3500 Sierra SL 6.5L MIL Lamp on, lacks power VIN: 1GTHK39F4T
please help I have a diesel problem if there is any 6.5 guys out there this truck keeps setting p0236 only when pulling a trailer and of course looses power I can not duplicate this problem I have replaced the map(boost)sensor and checked vacuum to waste gate ... Trouble codes: P0236
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1997 GMC Safari 4.3L rear hatch VIN: 1GDDM19W9V
the rear hatch does not open at all. botton dont work either does the key, i tryed to jump the release motor in the back and it acts like there is a short unplug the motor and it works fine with jumper wires any one run intop this or has a digram that they can...
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1992 Pontiac Grand Am SE 2.3L Misfire VIN: 1G2NE54D0N
Vehicle arrived at shop, with misfire problem. Have since found out that the customer installed used engine.Upon checking the complaint,We found an electrical spark happening from the crank pulley to the front cover, coinciding with engine miss fire. WE found ...
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1994 Pontiac Grand Prix SE 3.1L pass key VIN: 1G2W512MOR
is there an easier way to bypass this system other than putting in the proper resistors? All we want to do is use this vehicle for circle track racing. thanks for all your help.
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Fixes & Summaries for GM
Fix/Summary Answers
1989 Chevrolet S10 Blazer 4.3L No Start, Stall VIN: 1GNCT1820K
This vehicle is not fixed yet. The starter took out the flywheel so I have to replace them both before I can continue with the original no start/stall problem. When I get a chance to work on the vehicle again I will post more. Thank you guys for your help, sug... Trouble codes: 33 (MAP Sensor High), 34 (Map Sensor Low).
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1990 Chevrolet Blazer Scottsdale 5.7L No Start, MIL Lamp on VIN: 1GNEV18K71
Thanks for all the help. Replaced carter fuel pump with a delco pump and now runs great.
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1997 Chevrolet C3500 Cheyenne 5.7L Poor Idle Quality, Misfire VIN: 1GCGC34R7V
THIS TRUCK IS FIXED.THE EXHAUST VALVE ON #6 WAS BROKEN.AFTER READING RESPONSES TO MY HELP REQUEST,I REMOVED THE RIGHT VALVE COVER(BECAUSE IT WAS EASIER THAN THE LEFT),REMOVED THE ROCKER ARMS AND TAPPED ALL SPRINGS WITH A HAMMER.ONLY ONE SOUNDED DIFFERENT.INSPE...
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1997 Chevrolet K1500 Suburban LS 5.7L PS Pump, box VIN: 1GNFK16R1V
Here's the scoop. The dealer instructed me to eliminate the EVO and sold me the $160 bypass pipe. Hooking up the correct pump for 1997 will not turn this into a non-EVO system. After the 3rd PS pump I decided to order a CQ reman for 1996 model year, it work...
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1999 Chevrolet Lumina LTZ 3.8L Surge, Poor Fuel Economy, Low Power VIN: 2G1WN52K1X
Thanks to all who replied, I finally found the problem with this one. After exhaustive testing of fuel supply system (pressure, volume, pump amperage waveform), and testing MAF and exhaust system backpressure, I came back to the scan data readings that showed ...
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1999 Chevrolet K1500 Suburban 5.7L Misfire, MIL Lamp on VIN: 1GNFK16R9X
Thanks for all the good advice. I knew that I had an injector problem, so I addressed that first. Thanks for the info about the updated injector assy. I replaced the assy. When I pulled the upper intake off I noticed that there was raw fuel at #8 and the regul... Trouble codes: P0300 (Random cyl misfire).
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2002 Chevrolet Cavalier LS Sport 2.4L Cuts out VIN: 3G1JH12T42
THANKS FOR ALL YOUR HELP. WE REPLACED THE AFTERMARKET CRANK SENSOR WITH A GM UNIT. WE BELIEVE THAT THIS FIXED OUR PROBLEM. AFTER THE CUSTOMER HAD DRIVEN THE VEHICLE FOR A WEEK, HE INFORMED US THAT THE PROBLEM IS CURED. Trouble codes: P0336.
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2001 GMC Jimmy SLE 4.3L hi beam headlight VIN: 1GKDT13WX1
The fix is done. I checked for any wiring chafing or taping where it could of been repaired. Found none. Alldata wire schematic shows right hi beam powered threw the headlamp relay (that circut works ok)and the left hi-beam powered from the DRL Relay. So I sta...
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2002 GMC Safari SL 4.3L Misfire VIN: 1G3NSJW929
Thank for helping tips from many of our fellows ,many said vacuum leaks , injectors...and engine ...valves .. suggest leak down test on the engine we did that already and the result are good , mean no leaking both gauges show equal reading , we replace the in... Trouble codes: 300 (random misfire).
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1995 Oldsmobile 88 Royale 3.8L Surge, Cuts out, Stall, MIL Lamp on VIN: 1G3HN52K2S
Well thanks to everyone who responded. I ended up putting on an OE sensor and the problem still remained. I went through the tests again and still came up with a bad sensor. Then I noticed that sometimes I had sensor readings on the scanner and sometimes I did... Trouble codes: P0101 (mass air flow sensor).
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2000 Pontiac Grand Prix GT 3.8L Cuts out, Stall VIN: 1G2WP12K5Y
as we had come up with it had the feel of a crank sensor and with the very helpful replies we got back from my fellow IATN members we installed a new crank sensor and we have not got a call from the customer so we will say its a-ok --thanks for the help --joe ...
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