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Prev Professional Automotive Repair Technical Discussions for July 30, 2010
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Open Help Requests for GM
Help Request Answers
2003 Buick Rendezvous CX 3.4L No Start VIN: 3G5DA03E23
I have no repair history on this one. After a hot soak on a hot day it occasionally will not start. Cranks fine, apparently has spark and fuel pressure. The other guys in the shop were able to duplicate the complaint on one occasion.They state that there was s...
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2003 Chevrolet Silverado 1500 4.8L Flash Programming VIN: 2GCEC19V43
9 months ago I had another truck this exact model with a low idle complaint, Electronic throttle, I inspected for the throttle body coking of course and checked for the Pcm calibration, it needed the throttle cleaned and the pcm flash to go with it , during th...
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2004 Chevrolet Avalanche 1500 Z66 5.3L OBD II monitor VIN: 3GNEC12T44
Hello everyone, needing some help on this one. Truck has failed multiple times in state emission program due to monitor status. Basically every time you drive this truck and it completes a drive cycle once you turn it off everything resets to "not complete". I...
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2004 Chevrolet Silverado 1500 LS 5.3L Power Steering VIN: 2GCEK19T54
Hi everyone, this is my personal vehicle...The noise, a light belt slip, and a vibration while turning, started a few months ago. It's as if the steering gear was binding and the pump was working hard. No changes at all after the mentioned items were changed. ...
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2005 Chevrolet Suburban 1500 LT 5.3L Electronic VIN: 3GNFK16Z65
This vehicle came in because the customer thought something was wrong with the tranny. When cruising in fourth gear under a light load the engine rpms raise and drop by 100-200 rpm. She thought the tranny was slipping. While test driving I noticed that the ac ...
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2006 GMC Sierra 2500 HD SL 6.6L 1-2 Shift VIN: 1GTHK23D46
Truck came in with 2764 tcc pressure control solonoid circuit low. ohm wires from tcm to solonoid and ohmed good. put a solonoid in it antyway.After driving a few miles truck will fall out of 1st gear and slam into 2nd.Then will set the code. p2764 is the only...
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2002 Oldsmobile Silhouette GLS 3.4L Poor Fuel Economy VIN: 1GHDX03EX2
This van belongs to my father-in-law, so I have to fix it. Previously, gas mileage was 20city and [...]. Lately has dropped to 14city and 19 highway. Brakes are not dragging. I checked the exhaust backpressure (4psi). I thought that was marginal, so I repl...
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2000 Saturn SL 1.9L reverse and drive VIN: 1G8ZH5285Y
Thank you in advance for your assistance with my issue. This vehicle's transmission shifts hard in reverse and sometimes in drive. The fluid is okay and no slippage is felt. There are no transmission codes but scanner pulled two engine codes and U code: P0137,...
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Fixes & Summaries for GM
Fix/Summary Answers
1999 Buick Regal LS 3.8L Cuts out, Stall, Idle Fluctuation VIN: 2G4WB52K0X
Customer never brought vehicle back. I suspect a ground or pcm problem but I'll close this post without a fix. Thanks for all the replies anyways. Adam
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1978 Cadillac Seville 5.7L No Start, Hesitation VIN: 6S69B80466
First let me thank all of you for your help and input. I took the Ecm apart for a look and didn't see much. Double checked the fuse at the ECM, OK. Disconnected the 4 wire connector to the the ess to check for power, OK. Just happened to see the 3 wire trigge...
7
1976 Chevrolet Corvette Stingray 5.7L ride height VIN: 1Z37L6S433
Thank you for all your responses. Unfortunately they were all diffferent. We used the measurment from the frame to the floor which seemed to be the most consistant.
3
1999 Chevrolet Tahoe LS 5.7L Misfire, MIL Lamp on VIN: 1GNEK13R9X
I am calling this problem fixed. However another issue has been manifested as a result of fixing the cylinder misfire issue on #4 & #7 cylinders. Only one of the replies raised the issue of the brand X crank sensor I had installed as I had also raised a concer... Trouble codes: P0304 (Misfire cyl 4), P0307 (Misfire cyl7).
14
2000 Chevrolet Corvette 5.7L ABS pump VIN: 1G1YY32G2Y
well considering i didnt find anything wrong, im gonna lean towards the replies of the the motor just getting stuck after a long period of not getting used. volt drop from fuse to pin at motor was .19V (pullin [...] amps) and ground connection was super cle...
7
2000 Chevrolet K3500 5.7L Steering & Brakes VIN: 1GBHK34R2Y
FIRST OF ALL THANKS TO ALL WHO TOOK THE TIME TO RESPOND TO THE REQUEST THE TRK HAS A STRNG COOLER ALREADY ON THE TRK SO WE PULLED IT A CLEANED/PRESS WASHED IT AND REPLACED THE GM PR STRNG PUMP AGAIN FOR THE THIRD TIME THE TRK LEFT AND HAS NOT BEEN BACK GOING O...
6
2001 Chevrolet Cavalier 2.2L Engine cooling system VIN: 3G1JC52471
Hi guys thanks for all the great advice. Tried a new cap as many suggested with no luck. I looked at how the coolant flows through this engine, flows from thermostat housing through heater core back to cylinder head to water pump and over again. When thermos...
11
2001 Chevrolet Express 2500 5.0L MIL Lamp on VIN: 1GCFG25M91
Thanks to everyone for their help. I finally replaced the O2 sensor with one from another source and this fixed the problem. Trouble codes: P0154.
11
2001 Chevrolet Suburban 1500 LT 5.3L compressor VIN: 15455VGDJJ
orielly auto parts finally found me the correct switch..they had to go across 2 counties for me to get it.istalled the switch,evacuated system,recharged, wah lah..truck cools excellent. this switch was purple in color,all the local auto stores had none of thes...
5
2001 Chevrolet Tahoe LS 5.3L Misfire, MIL Lamp on VIN: 1GNEK13T91
After double and triple checking my findings(wasted 6 hours!). Most of the replies said it was a converter issue. Getting no help from the muffler shop that installed the cats, which said they have never had a bad cat. The only way to resolve this was to put a... Trouble codes: P0430 (Bank 2 cat converter).
9
2003 Chevrolet Silverado 1500 5.3L elusive leak VIN: 1GCEK14V13
thanx guys for the help, i used the shower cap trick in a diff way. after purchasing a new 500.00 epa cert sniffer, i retaced all possible leak prone areas, wrapped the compressor with plastic kitchen wrap and checked next morning with new tester and found a s...
10
2004 GMC Yukon XL 1500 SLT 5.3L No Start, Poor Fuel Pressure VIN: 1GKFK16Z74
Thank everyone who replied. I tested voltage and ground to the pump and got 12 volts and a solid ground. Retested with fuel pump connected and it was the same. I removed the fuel tank again to double check inside the tank at how much fuel it had and saw the... Trouble codes: P171, P174, P116.
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