GM Automotive Technicians Technical Discussion and Fixes for Jan 22, 2004 - iATN (Members Only)

×

Join Now

Prev	Professional Automotive Repair Technical Discussions for January 22, 2004 International Automotive Technicians' Network (iATN) - Members Only	Next
(Also Available: All, Asian, Chrysler, European, Ford, GM.)
Vehicle Owners: If you are seeking an automotive repair professional to service your vehicle, visit the iATN Repair Shop Finder.

Open Help Requests for GM

	Help Request	Answers
	1994 Buick Park Avenue 3.8L Fuel Injectors This vehicle was in a front end collision. The bumper and right outside fender are being replaced. The body tech at the shop drove the vehicle up onto a frame straightener. Upon completing the work to pull the right bumper mount back to it's original location,...	View
	1998 Buick Park Avenue Ultra 3.8L steering VIN: 1G4CU5218W Greetings Techs, This car has been to 2 other shops for the same problem. Now we have it. It has a growling noise with vibration when turning to the right. We test drove it in a parking lot and the noise/vibration is very easy to duplicate while making circle...	View
	1999 Buick LeSabre Custom 3.8L Hard Starting VIN: 1G4HP52K3X Thanks to all in advance who can respond & help. This customer is complaining of a hard start/extended crank time in the morning/when vehicle is cold. He states that occasionally it will start ok. When it doesn't want to start, using the gas pedal will make it...	View
	1995 Chevrolet Monte Carlo Z34 3.4L tcc VIN: 2G1WX12X1S Hello all...We have this Monte Carlo that will not lock the TCC up. The trans was rebuilt by Russ Moore in Fortewayne, Indiana. We can controll the solenoid with our Tech 2, and we can hear it click, but it will not apply. My tech is saying that it's internal,...	View
	1996 Chevrolet Caprice Classic 5.7L heater VIN: P8TR125683 Hello, I am having a bit of trouble with this car, and it's my Grandmother's so any help would be appreciated. About one month ago we replaced a stuck thermostat,shut, and car got warm but didn't overheat. This weak it blows cold air sometimes out of the heat ...	View
	1997 Chevrolet Malibu 2.4L water pump we installed a water pump in this car since then we have noise coming from the area of the timing chain. we replaced the first pump which was after market with a factory pump , we also replaced the timing chain tensioner. no help we still have the noise or noi...	View
	1997 Chevrolet S10 2.2L No Start VIN: 1GCCS1442V this truck came in for a no start. cuatomer stated that he stoped to put gas in went to re start and would not restart. checked for spark ok with a spark tester. installed new plugs and wires due to milage. check for injector puls with with noid light ok hooke...	View
	1999 Chevrolet Blazer 4.3L Heater core VIN: 1GNCS13W2X I have a real stumper here guys and gals. This Blazer came in in October with a heater core leak. We replaced the heater core only to have it return a month later with another failed core. Upon inspection, we saw that the area that was leaking had turned black...	View
	2001 Chevrolet Cavalier 2.2L Engine Temp VIN: 1G1JC12411 usually cooling systems are no problems but this one has no rhyme or reason, The customer brought this one in after he replaced the thermostat for a no heat porblem while driving, he stated that while engine was idling engine temp would come up, and would have...	View
	2001 Chevrolet Monte Carlo SS 3.8L Unknown VIN: 2G1WX15K11 Customer's complaint is that the rear of the car feels loose/unstable on slippery roads (buffalo area). He says that the rear of the car feels as though it is going to come around on him even when making a lane change. He has owned it since new and says that i...	View
	1992 GMC Jimmy SLE 4.3L No Start, Hesitation, Stall, Misfire VIN: 1GKDT13WXN done a fuel pressure check 60 psi when pump is running when pump shuts off pressure drops to 10 psi and car will not start i can take off the air intake duct and the car will start and run as sone as i put the duct back on it will not start.could i have gotton...	View
	2003 GMC Sierra 2500 HD SLE 6.6L No Start VIN: 1GTHK24103 Hello I have this 6.6 Diesel that will not start. It cranks over but will not firer.Iam a fish out of water when it comes to these engines. I had a code p1093 and I got the diagnostic tree and followed it, and was led to replaceing the fuel rail pressure senso... Trouble codes: P1093 (Fuel Rail Pressure sensor circuit)	View
	1995 Pontiac Firebird Formula 5.7L Starting VIN: 2G2FV32P7S Car came from another shop, cranks but does not start. After checking wiring we noted that the anti-theft module was not sending the requested 2.5v to the ECU, needed for starting. As all other signals are ok, it seems that the module must be replaced. As w...	View
	1995 Pontiac Trans Sport 3.1L rear heat VIN: 1GMDU06D0S Hello techs This is my own van, i just replaced the vacuum valve/coolant pipe under the hood (it was leaking) and now i cannot get any heat in the rear, all air is purge form system. I found the vacuum lines under the dash on pass side. The one that controls...	View
	1997 Pontiac Sunfire GT 2.4L Mechanical VIN: 1G2JD12T0V Hi, this car came to us with engine noise, we check it and verified. no noise at idle but as you bring it up off idle there is a fairly loud tapping noise. sounds like it is in camshaft area but cannot pinpoint. we know of the chain tensioner problem so we pul...	View

Fixes & Summaries for GM

	Fix/Summary	Answers
	1989 Chevrolet Corvette 5.7L MIL Lamp on VIN: 1G1YY2183K Much appreciation to James [...] who suggested replacing both MAF relays. Both relays, power and burn off, were replaced. The vehicle kept getting test driven and restarted and I could not get the code to reset... Trouble codes: 36 (MAF burn off failure).	5
	1994 Chevrolet G20 Chevy Van 5.0L Excessive Emissions, Surge, Misfire VIN: 1GCEG25H9R I threw myself off the track when I checked egr before manifold gasket replacement / egr ports were plugged solid and didnt recheck egr after the manifold was reinstalled / consensus was egr problem / the control solenoid was allowing vacuum intermittently at ...	7
	1995 Chevrolet Astro 4.3L No Start VIN: 1GCDM19W5S Well, guys I think this one is going down the road with the repair being that it had a bad connection at the plug. I followed up on all the replies I recieved and I looked at the harness very closely. I took the loom apart and looked for signs of rub through n...	13
	1995 Chevrolet C2500 Cheyenne 6.5L Hesitation, MIL Lamp on VIN: 1GCGC29F2S Had a few responses and all said fuel driver module and that did the trick. all is well and thanks for the help. Mike P	3
	1996 Chevrolet C1500 4.3L Starting VIN: 1GCEC14WOK hi all i would like to thank everyone for their input ,after trying alot of the suggestions,i went back to basics and started over.i changed the plugs since they were fuel soaked like a few of you said to check. i replaced the cap and rotor and guess what, the...	29
	1997 Chevrolet Monte Carlo LS 3.1L convertor cycles of and on @ 70 MPH VIN: 2G1WW12M7V Thanks for all the replies although none helped. I have found that the Transmission in the car is supossed to have a 333 differential and a 35- 35 sprocket in it. Some one has changed the transmission out and it now has a 3.29 gear ratio and a 37-32 sprocket i...	5
	1999 GMC Sierra 1500 SL 5.3L No Start, Cuts out VIN: 1GTEK19TXE Special thanks to Jeff [...] with 3 e-mails, Marty [...], and Ken Zanders for the quick responses. Spec is 9-11 amps running. Appears to only have the 1 ground near the filler tube. I never got mo...	8
	1986 Pontiac 6000 LE 2.5L No Start VIN: 1G2AG19R2G I appreciate the help I recieved from all who took the time out to give me a hand. Most of you said to replace the coil. Others were to increase the min idle, check inside distributor for loose connections, double check scan pids, new plugs & change oil. Well ...	22
	1997 Pontiac Grand Am SE 2.4L rear brakes VIN: 1G2NE52T9V I had 6 responces ranging from primary shoe goes foward,groved backing plates,correct shoe adjustment,a tech bulletain 73-15-18 replace all cables,which was done but no help had to leave cable disconnected, customer has not returned	6
	1999 Pontiac Montana 3.4L heat VIN: IGMDX03E2X first of all thanks to everyone who replied to my help request. the vehicle sat here for approx 3-4 weeks before we got the go ahead to do anymore diagnosing. we removed the cylinder heads and found no obvious head gasket problems . so we sent out the heads to...	15
	1999 Pontiac Montana 3.4L heater VIN: 1GMDX03E7X the bleed air door was out of place, thank you all for the help	9

(Also Available: All, Asian, Chrysler, European, Ford, GM.)