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Prev Professional Automotive Repair Technical Discussions for November 24, 2008
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Open Help Requests for GM
Help Request Answers
1996 Buick Regal 3.8L Poor Idle Quality VIN: 2G4WB12K6T
This car is driving me crazy and I don't have far to go. It has a high idle (2200 rpms) only when cold. All of the sensors, powers and grounds test good. There are no codes and scan tool data looks perfect. I cannot find any vacuum leaks. I removed the PCM and...
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2001 Buick Regal LS 3.8L Hesitation, Cuts out VIN: 2G4WB55K71
Replaced fuel pump in march of 08 cust has brought it back since then with no problems them on 11/21/08 customer came back and said ever since we put the fuel pump and fuel filter in the car the car has no power. any help would be greatly appreciated i have re...
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2005 Buick Terraza CX 3.5L warning beep VIN: 5GADX33185
this van came in with a evap code, and was found to have a broken wire in the floor, by the right passengers feet. I used a tech 2 check all modlues for codes and cleared. That is where the problem started. now when you get in the van and start it up to drive....
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1980 Cadillac DeVille 5.7L Brakes Apply when started VIN: BD69NA9213
Hey Guys, This old diesel Caddy is giving me some grief. It was purchased as is by a client and we towed it to the shop to get it running. The Brake lines were rotted off and there was no fluid it system. Rear wheel cylinders, calipers, lines were all install...
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2000 Cadillac Escalade 5.7L park lights VIN: 1GYEK13R9Y
Hello guys and gals. I am working on a 2000 Cadillac Escalade that has the park lights on all the time. I have removed the light switch and the lights stay on,I removed fuse 9 (20A)park lps fuse and the lights stay on. When I remove the Lighting fuse 8 (50A) i...
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1987 Chevrolet Camaro Z28 Iroc-Z 5.7L Excessive Emissions, Poor Idle Quality, Stall, Misfire, Poor Fuel Economy VIN: 1G1FP2189H
hello iatn fellows.i have this car that runs very rough and if i let it run long the exhaust will glow red. it happens intermittently. i dont let it run too long because i dont want to melt the cat. i dont have too much time to check the car when it acts up, b...
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1996 Chevrolet Cavalier 2.2L antitheft VIN: 1G1JC1247T
the car came in no start no spark. custmor say he was in a crash car hit on driver door car stall would not restart he jump started it and it started and stalled and has not started sins.i am thinking passlock sensor assembly but it seems to chick ok i need he...
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1997 Chevrolet S10 4.3L Turn signals &brake lights VIN: 1GCCS14X8V
This truck has some minor front end damage on the right side from a recent deer hit and the customer states that after the accident the lights no longer worked properly. Now the turn signals and flashers don't work and both turn indicators on the dash light up...
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1997 Chevrolet K1500 Suburban 5.7L starter VIN: 1GKFK10554
When I start the engine it turns over with a jerk like a wet dist cap and is trying to break starter like the old chevys with flywheel problems.Cap is flat type with circuit built in.It starts after a couple tries and runs good.I`m thinking dist cap or?Flywhee...
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1998 Chevrolet Cavalier Z24 2.4L Poor Idle Quality, Misfire VIN: 1G1JF12T6W
Car was brought to me after having a water pump installed at another garage. It has a code P0300 Multiple cylinder misfire in it. On my scanner all cylinders are skipping. Car runs fine on road, but has a rough idle, customer said everything was fine until she... Trouble codes: P0300 (multiple cylinder misfire)
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2001 Chevrolet Blazer LS 4.3L Misfire VIN: 1GNDT13W71
This my parents vehicle, they took it to the dealership for the check engine light being on. They said it had a crankshaft code and replaced the crankshaft sensor. My dad picked it up and was driving home and the check engine light came on & then started flash... Trouble codes: P0300 (Random Misfire)
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2001 Chevrolet S10 4.3L hvac VIN: 1GCCT19W81
hey all, this truck has intermitant poor air flow from vents on heating (did not notice problem in summer with a/c). after approx 2 hours of driving hwy the mode switches and almost no air flow can be felt from any one vent, seems to be like a stuck blend door...
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2004 Chevrolet Tahoe LS 4.8L Starter VIN: 1GNEK13V64
Hello Techs, Got an intermittant no start/ no crank. Vehicle was towed into our shop. We started our testing and while my tech was checking for power to the starter the vehicle fired up. This will go 2 days to a week without any problems. Vehicle has strong b...
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2005 Chevrolet Cavalier LS Sport 2.2L Cluster VIN: 1G1JH12F95
Tranny guy looking for help. Repaired the trans for the customer and delivered the car. Customer called a couple of days later saying speedo quit, can I check it out. He dropped it of a few days later and said it is the whole cluster dropping out, not just the...
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2006 Chevrolet Colorado LT 2.8L Cuts out, Stall, Misfire, MIL Lamp on VIN: 1GCCS14896
Hello all, I have picked a new account with colorado delivery trucks. They have 3 trucks with same symptoms and po106 and po300 codes. The trucks range in mileage from 81,000 to 150,000. All have 2.8 engines. This truck is the only one with a po014 code. My co... Trouble codes: P0014, P0106, P0300
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1998 GMC K1500 Sierra SL 5.7L Brakes VIN: 2GTEK19R6W
Vehicle came in with spongy brake pedal. replaced the master cylinder, front calipers, and ABS pump. I have bled the brakes about ten times. Brake pedal still goes almost the whole way to the floor. No visible leaks.
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2004 GMC Savana 3500 6.0L Dash Cluster VIN: 1GDHG31U54
The complete set of gauges will cycle from left to right, all dash indicators will illuminate solid. The front marker lights will also flash intermitantly. The MT 2500 will loose connection with the ABS only. The scanner does not have any issue with any other ...
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2003 Oldsmobile Alero GL 3.4L theft system VIN: 1G3NL12E93
Hi all. I have this alero in for an intermittent horn going off at different times. I have not been able to duplicate the concern. There are several codes in multiple modules. In the bcm history is a B2752 for a horn relay coil circuit low. I am able to manual...
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2006 Pontiac Solstice 2.4L No Start, MIL Lamp on VIN: 1G2MB33B26
Hello again from Hungary I steal did not find the problem with this car. Hope you can point me the right direction. Car was a big wreck body shop and mechanic replace engine and complete wiring in the car did not start for them so they started switching comput... Trouble codes: U2105, B3055, U2113, U2107
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2003 Saturn Vue 3.0L shift lock VIN: 5GZCZ53B03
I have a 2003 Saturn Vue it has a stored B2707 Shift lock code. The code is intermittant and it passes all tests. Have cleared it once and it came back. I have not been able to duplicate the condition in the shop. The customer has never been unable to shift fr...
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Fixes & Summaries for GM
Fix/Summary Answers
1988 Buick Century Limited 3.8L Mechanical VIN: 1G4AL5133J
I guess I wasn't real specific in my first post, because I did not want it to be real long. Anyway I am an automotive Instructor and a 16 year old student did most of the reassembly with me checking as he went along. All of your responses were of great help ...
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2002 Cadillac DeVille DHS 4.6L MIL Lamp on VIN: 1G6KE54Y22
THANKS FOR ALL WHO RESPONED WITH ADVICE THE PROBLEM AFTER ALL WAS WITH FRONT O2 SENSOR READING SLOWLY, HAD PREVIOUSLY INSPECTED FRT O2 SENSOR AND EVERYTHING CHECKED OUT FINE ORIGINALLY FINELY TESTED BAD AND WAS REPLACED AND IT HAS BEEN 4 DAYS AND ALL IS CLEAR.... Trouble codes: 420 (catalyst ineffiency).
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1996 Chevrolet C1500 Cheyenne 4.3L 1-2 3-4 shift VIN: 1GCEC14W9T
i received alot of good info on this.it was a very difficult problem where the ignition switch was malfunctioning inhtermittent.after repairing that it also had a bad seperator plate with the ball pockets in bad shape.this is a awesum service and i want to tha...
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2000 Chevrolet Blazer LS 4.3L Poor Idle Quality, MIL Lamp on VIN: 1GNDT13W4Y
just wanted to say thank you to all 17 replies on this beast. we did a running compression check and found that #4 cyl only had 60 lbs where other cyl. had 110 lbs the customer has declined to have head pulled at this time. thanks again to all replies Trouble codes: P0300.
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2001 Chevrolet Tahoe 5.3L Starting VIN: 1GNEC13T41
Although we felt we crossed all our "t's" and dotted all our "i's," we wanted assurance our diagnosis was correct. (ALLDATA'S color of wiring wasn't very clear.) Seven of 8 replies said ignition switch. We came in this morning and it was much warmer than Fr...
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2001 Chevrolet Suburban 1500 5.3L MIL Lamp on VIN: 3GNEC16T21
I have not seen this vehicle again. It is being driven cross country. Customer reported (by cell phone) that the MIL light went out after 100 miles or so. Vehicle fixed itself? A LOT of very good CONSTRUCTIVE replies. Detailed instructions on testing, backprob... Trouble codes: P0157 (02 Sensor Circuit Low Voltage Bank 2 Sensor 2).
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2002 Chevrolet Impala 3.8L no start VIN: 2G1WF55K02
Well I was all ready to replace the BCM. when checking power and grounds I noticed very high resistance in ground circut. I used a set of jumper cables to go from batt neg to the block, the car started!! I then looked at the connections at battery and block al...
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2003 Chevrolet Silverado 2500 HD 6.0L tcc
Well the truck isn't fixed as of this posting, The coolant temps is at regulated temp, 195F, there are no codes set on this vehicle, I believe that a flash of the PCM or a new PCM will fix this vehicle but have not had the chance to do so at this time. Thanks...
6
2003 Chevrolet Silverado 2500 6.0L engine VIN: 1GCHK29U13
THANKS TO ROSS & ALLAN. TO CENTER OIL PUMP ON CRANK, HAND TIGHTEN BOLTS, USE 2 .002 FEELER GUAGES TO CENTER PUMP, TORQUE BOLTS & RECHECK CLEARANCE ON TOP & BOTTOM & BOTH SIDES. AS FOR TIMING COVER ALIGNMENT WITH OUT TOOL, INSTALL CRANK SEAL IN TIMING COVER & ...
5
2004 Chevrolet Venture LS 3.4L starter VIN: 1GNDX03E04
Thanks for all the feed back This problem turned out to be the ignition key One thing we noticed when diagnosing this problem was the vtdm light was blinking but when looking for codes there were none we were assuming that this must indicate a key communicatio...
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2005 Chevrolet Trailblazer LS 4.2L right front window VIN: 1DSHJCKVJH
thank you all for the quick response but i advise the customer what had to be done and the said the were mot ready to do it because of cost so again thanks
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2006 Chevrolet Impala LS 3.5L washers VIN: 2G1WB58N69
thanks to those who replied.the relay is an integral non servicable item located in the under hood fuse block.replaced the fuse box for 390$ and problem solved after i checked for the proper in puts to the box from the bcm
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