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Prev Professional Automotive Repair Technical Discussions for October 19, 2010
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Open Help Requests for GM
Help Request Answers
2000 Buick Century Custom 3.1L remote keyless VIN: 2G4WS52J2J
Remote key fob has gone bad, i am purchasing a new one from GM. Do i have to have it programmed by a tech 11 or is there a way without the dealer scan tool??? Thankyou ...
1998 Cadillac Seville STS 4.6L Service Suspension Light Comes On VIN: 1G6KY5495W
We have a service suspension light coming on. Code c1780 loss of steering signal to cvrss from ebtcm or other wize known as antilock brake control module. We did some testing and found no signal coming out of brake control module to continuously variable road ...
1986 Chevrolet Corvette 5.7L Poor Idle Quality, Hesitation, Cuts out, MIL Lamp on VIN: 1G1YY0788G
Car came in not running. R & R engine then upon installation discovered no start / VATS issue . Now the car starts and drives but it is showing codes for mass air flow , burn off and service engine soon light is on . Car is running rough and rich . Tried repla... Trouble codes: 33 (mass air flow), 36 (mass air flow / burn off)
1988 Chevrolet Corvette 5.7L Surge VIN: 1G1YY2184J
car has a surge at idle in closed loop and open loop the only thing that makes a difference is when you unhook the timing connector it will stop surging i have done idle learn at least 10 times any help would be great
1997 Chevrolet Camaro 3.8L Poor Idle Quality, Misfire, MIL Lamp on VIN: 2G1FP22K3V
Thanks ahead of time for any help. The vehicle came in barely running and missing terribly. Would die randomly. Only code in PCM was P0300. First thing was to check coil output and injector pulse. Both were good. Pulled plugs and found #4 plug tip missing and ... Trouble codes: P0300 (Random Misfire)
1998 Chevrolet Blazer LS 4.3L Door locks VIN: 1GNDT13W8W
Just bought this 98 blazer and getting the little bugs worked out of it finally when the rear hatch starts messing up. took the truck out hunting was a rainy day so i opened the hatch and used it as a roof while i ate lunch, since then the rear hatch keeps tr...
1998 Chevrolet Camaro Z28 SS 5.7L Door Locks VIN: 2G1FP32G7W
Vehicle came in with the courtesy fuse blown...which runs the interior lights and the power door locks...with the key off every time you try to lock or unlock the doors the bcm sends a ground signal thru the feed wire which blows the fuse...with the key on eng...
1999 Chevrolet Venture 3.4L MIL Lamp on VIN: 2G1WF55K35
Chevy Venture came in with CEL code P0401 "EGR insufficient Flow". I put a new EGR Valve on. It's the electronic type. Cleared code and a day later the light was on again and gave the came code. Double checked the ports for carbon build up at both the EGR and ... Trouble codes: P0401 (EGR insuficent flow)
2001 Chevrolet Astro 4.3L Fuel Guage VIN: 1GNEL19W71
This van has no fuel level operation my snap-on scanner does not do a guage test in bcm mode my question is should I bite the bullit and send it to chevy I dont throw parts at cars the purple wire has 1.4 volts! powering or grounding makes no diffrence needle ...
2003 Chevrolet Venture LS 3.4L all modules VIN: 1GNDX03EX4
First, thank you for taking the time to read this and offer insight. This vehicle was brought to us by another shop after they got it to replace the alternator. The vehicle was running when they got it. During the alternator repair, the wiring harness that co...
2003 Chevrolet Venture LT 3.4L No Start VIN: 1GNDX03E73
Hi there everyone and thanks for the help on this one that is puzzling me. I have this 03 Venture Van 3.4 in with an intermittent crank no run. The vehicle will never start on the first attempt to crank it. It just cranks and cranks and wont run. If you let of... Trouble codes: P1189 (Oil pressure sensor failure)
2004 Chevrolet Malibu 2.2L Turn Signal VIN: 1G1ZU54874
I have a 2004 Malibu that came in recently for an inability to manually shift to lower gears-I scanned checked it and had a code stored for the shift handle switch which I ordered from the dealer-when the customer returned to have it installed he said that aft...
2006 Chevrolet Cobalt LS 2.2L Electronic VIN: 1G1AK55F26
I have this Cobalt that is driving me crazy. Thanks in advance to all who look. Check engine light on, P0700, went to transmission codes and have P0961 Line pressure control solenoid performance and P0976 2-3 shift solenoid low voltage. Transmission defaults t...
2001 GMC Sierra 1500 SL 5.3L t case VIN: 1GTEK19TX1
hey i have a strange issue with this truck it came in with a t case leak and we found that the housing from the transmission to the t case was broken replaced and re sealed and then returned to customer 3 days later it came back with a vibration and the housin...
2000 Pontiac Bonneville SSEi 3.8L MIL Lamp on VIN: 1G2HZ5412Y
vehicle has a p0440 code and "check gas cap" comes on in info center. customer replaced gas cap but problem still occurs. have smoke tested system and have found no leaks. clear codes and code comes back. anyone come across this on this vehicle? Trouble codes: P0440
2005 Pontiac Montana SV6 3.5L Poor Idle Quality, Surge, Cuts out, MIL Lamp on VIN: 1GMDU23L05
Van came in barely running stalling and hard to start ..scanned and had codes for map sensor and reference voltage ..replaced map sensor ..runs like a charm ..but the ses lite is back on and have code PO641B 5 volt refference 1 circuit ... checked the referenc...
2007 Saturn Ion-2 2.2L Poor Idle Quality, Misfire, MIL Lamp on VIN: 1G8AJ55F27
This vehicle came in a month ago with a p0304. Swapped plug coil and injector missed followed injector, replaced injector. Fine for 3 weeks then came back with a p0304 ( new injector is on 2 due to swapping then replacing just one). Code was stored history lig... Trouble codes: P0304

Fixes & Summaries for GM
Fix/Summary Answers
1999 Cadillac Catera 3.0L No Start VIN: W06VR54R9X
I thank you all for your input which was very similar in most cases,and even though I wasn't getting a CAS code and it tested good ,I replaced crank angle sensor which I knew was the problem and so far car run's fine and start's great!!! thanx again don't forg... Trouble codes: P1141, P0140, P0030.
1991 Chevrolet K2500 Cheyenne 7.4L Hesitation, Surge, MIL Lamp on VIN: 2GCGK29N0M
2005 Chevrolet Equinox LS 3.4L Starting VIN: 2CNDL13F05
Thanks for all those who replied. Sorry it took so long to close but my customer needed some time to save the money to fix this one. Looks like when he jumped it backwards, he fried the ECM, BCM, TCM, Air bag Module, and ABS module. He is definitly wishing h...
2005 Chevrolet Cavalier 2.2L Speed Control VIN: 1G1JH12F75
Thanks to Timothy from Wisconsin, Martin from Florida, and Richard and Rob, both from Michigan. The suggestions were mostly along the lines of installing a new brake switch, which I did, and the problem has not returned. The customer has driven the vehicle for...
2008 Chevrolet Express 1500 4.3L Vent VIN: 1GCFG15X78
After the reply we received I contacted customer and he had 100,000 mile extended warranty. He brought to dealer and they overhauled transmission. Vehicle is fixed.
2003 GMC Sierra 1500 SL 5.3L axle seal VIN: 1G2VC24L46
Thanks for all the replies. Most everybody was right on. I removed the 6 bolts holding the halfshaft to the flange. Some responses said getting the flange to pop out of the differential might be hard were correct. I could not get it out with prybars, i had to...
2000 Oldsmobile Intrigue GL 3.5L Starter VIN: 1G3WS52H2Y
Many thanks to all that posted replies, many suggested the starter and cables but the vehicle has not been back to the shop so i need to close this. I will update a fix when it returns. Thanks again Wiggie
1999 Pontiac Grand Prix GT 3.8L MIL Lamp on VIN: 1G2WP52K4X
Thanks to all the great replies we replaced the vent solenoid and it fixed the problem! Thanks again! Trouble codes: P0440, P0449.
2005 Saturn Relay-2 3.5L MIL Lamp on VIN: 5GZDV03L75
i'm calling this one fixed it has been over a week now and customer says light has not come back. i went with michaels advice from connecticut and wired the connector backwards from the enclosed instructions that comes with the new valve. it should go EDCBA wi... Trouble codes: P0404, P1404.
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