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Prev Professional Automotive Repair Technical Discussions for November 11, 2011
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Open Help Requests for GM
Help Request Answers
2005 Buick Park Avenue 3.8L Misfire, MIL Lamp on VIN: 1G4CW54K55
Hi, This Buick has a misfire on cylinder #1 that occurs exactly at 4200 rpm' or higher. The code that reoccurs is p0300 but live data shows 10,500 misfires on cylinder #1. Does not happen under load or on hoist. I removed the valve cover to check for a broken ... Trouble codes: P0300 (Misfire)
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2007 Cadillac Escalade ESV 6.2L Drivers Heated Seat VIN: 1GYFK66817
On my 2007 escalade esv 4 wheel drive with heated and cooled front seats. My drivers seat heater is inop. Both the upper and lower heat went out at the same time. The indicator on the climate controle panel reflects the inputs from the camand button on the cli...
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1991 Chevrolet S10 2.5L Ing VIN: 1GBCS10A8M
Postal LLV 2.5 cut out while driving, had intermitten spark from coil no spark on cyl #1,2,4 but same spark on #3 as coil had. Replaced dist. and computer also had tune up just two weeks prior. Not sure what to check from here.
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2000 Chevrolet Venture 3.4L Cooling fans
I've already advised customer that he needs to flush the cooling system, replace the leaking gaskets, replace the radiator & water pump on this Van. Radiator and pump replacement based on vehicle age/mileage and clogging of radiator due to neglected coolant se...
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2000 Chevrolet Impala 3.4L MIL Lamp on VIN: 2G1WF55E7Y
Got this one from a shop down the road. Poor guy did all the basics and is still having a code set from time to time. One thing I noticed right off was on both failure records it had when it got here was a BARO pid of 74 in Hg. Wow, that must be a deep hole wh... Trouble codes: P0401
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2002 Chevrolet Cavalier LS Sport 2.2L MIL Lamp on VIN: 1G1JH12F02
We replaced the Fuel Pump Module a while back on this vehicle(unrelated, no-start condition. When this problem occurred, we smoke tested the EVAP, No loss of pressure or leaks were noted, we replaced fuel cap with OEM & Reset & Cleared EVAP Monitor. Vehicle re... Trouble codes: P0440 (The EVAP System is not able to maintain or achieve vacuum during the diagnostic test.)
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2003 Chevrolet Impala 3.4L No Start, Cuts out, Stall, MIL Lamp on VIN: 2G1WF52E93
Car starts when the key is turned but cuts out after 1-2 secs. It will start and stay running on the second attempt(almost always- when it doesnt I must spray ether in to get started). Once it runs past that point of ~2 secs it will never cut out again until k... Trouble codes: P0336
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2004 Chevrolet Monte Carlo SS 3.8L no heat VIN: 2G1WX15K14
this car wont blow any hot/warm air, heater hoses are hot, it has dual side controls and both actuator motors look like there turning, it acted up on them last fall and seemed to correct itself at that time, has no codes, when you slide the temp control levers...
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2006 Chevrolet HHR LS 2.2L Steering VIN: 3GNDA13D46
Had customer stop by with steering problem and check engine light on. Could not leave car but will be returning Monday. Took a quick look at car my solus would not read codes {will not communciate} checked fuses all tested good. The power steering is not worki...
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1992 GMC C2500 Suburban 7.4L 304 Trans Temp VIN: 1GKGC26N3N
After repairing harness was still surprised to see trans temp so high. Pulled connector off trans. Trans temp never changed. Odd. Also noticed i had no tps voltage on trans side of modis but had it on engine side of scanner(modis). After following flow chart t...
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1998 Oldsmobile 88 Royale 3.8L No Start VIN: 1G3HN52K4W
Hi yall, i have a bit of a stumper here, this vehicle was just brought in on the hook. customer stated that they just got out of the store and vehicle would just crank. I checked fuel pressure first off and it is at 50 Psi steady during cranking and holds pres... Trouble codes: P0300
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Fixes & Summaries for GM
Fix/Summary Answers
1986 Chevrolet Monte Carlo SS 5.0L Lighting VIN: 1G1GZ37G1G
thanks to all i did find out that the system was opened up.did bleeding proceedure and no light.the reason for not closing this is that the customer had a death in the family an needed the car.came by just a few hours ago and all is well thanks again.
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1997 Chevrolet Cavalier Z24 2.4L turn signal brake lights VIN: 3G1JF12T1V
Thank you everyone for telling me that the brake/hazard fuse is supplied by the Batt 2 Fuse. The underhood fuse box was clean and power was coming out of Batt2 fuse and past the junction block. After tracing the wire past the junction block I found that the wi...
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1998 Chevrolet C3500 Silverado 5.7L Hesitation, Cuts out, Stall VIN: 1GBGC34R9W
Well, sorry this took so long. The customer was throwing parts at it and ended up putting a ECM in it and it fixed the problem. Runs great. Thanks everyone! Trouble codes: P0300 (Muliple Misfires).
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2000 Chevrolet Monte Carlo SS 3.8L dome light
Thank you for all the responded! The problem indeed did lay in the headlight switch itself. Replaced headlight switch and the flicker went away.
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2002 Chevrolet Suburban 1500 LT 5.3L Temperature control VIN: 1GNFK16ZX2
Thank you all for the quick responses. Once I took a look at the temperature readings things became clear. The inside temp read 15C and the outside read 49C! When unplugged it read 10C. New ambient temp sensor and all is well.
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2003 Chevrolet S10 4.3L Heater Core VIN: 1GCDT19X33
THANK YOU Bruce from California! After reading all of the great suggestions we decided to try Bruce's suggestion. After replacing the heater core we flushed the cooling system again, installed a "voltage sponge" on the heater core to body ground, installed a "...
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2007 Chevrolet Silverado 1500 LTZ 5.3L Excessive Idle Speed VIN: 2GCEK19JX7
Thanks to everyone for the ideas and posts. After going over and over this thing and performing the drive cycle test 3 times. I had my Tech, take his Solus off and use my Verus scanner, which just so happened to have a seperate procedure for KOEO idle relearn,...
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2008 Chevrolet Impala LT 3.5L MIL Lamp on VIN: 2G1WT58M08
THE IMPALA IS FIXED. EVEN THOUGH THE AIR PUMP SOUNDED NORMAL AND MADE PRESSURE IT WASN'T ENOUGHT PRESSURE. I REPLACED THE PUMP AND THE CAR HAS BEEN ON THE ROAD FOR OVER A WEEK WITH NO PROBLEM. THANK U ALL FOR TAKING THE TIME TO HELP ME OUT. Trouble codes: P2440 (Air solenoid remains open).
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2007 Hummer H3 3.7L low speed VIN: 5GTDN13E57
I got lucky yesterday,we had a H3 in the lot to compare voltage readings on the low speed and park circuits.The low speed green wire always read batt. voltage when the key was turned on and the wipers would sweep twice then zero when stopped.The park circuit,y...
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2001 Saturn L300 3.0L Heater VIN: 1G8JW54R41
Thanks for everyone's input. The problem wound up being pieces of RTV sealant that collected in the heater core possibly from a past thermostat installation that floated through the coolant system and accumulated in the core. Removed the trash and heat is blo...
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