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Prev Professional Automotive Repair Technical Discussions for September 22, 2011
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(Also Available: All, Asian, Chrysler, European, Ford, GM.)
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Open Help Requests for GM
Help Request Answers
1994 Chevrolet S10 Blazer 4.3L No Power Aft. 40MPH VIN: 1GNCS13W9R
This is one of those I should have turned away but I'm too hard headed, any way I always like a good challenge. He's very unhappy that the last shop sold him a Fuel pump and Injectors but didn't fix the problem, I told him that if I can't fix it I won't charge...
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2000 Chevrolet Silverado 1500 5.3L abs VIN: 2GCEC19T9Y
hello techs, I'm working on this truck, No codes stored. Activates abs pump when coming to a stop. Data shows rear wheels going 1 mph slower than the front. This truck is from chicago very rusty under it. Any help will be appreciated thanks.
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2004 Chevrolet Aveo 1.6L Misfire VIN: KL1TG66646
Car was towed in barely running, had a p0606. I put another PCM in it and it still ran very poorly, misfiring cylinders 3 and 4. I wasn't getting steady spark, so I replaced all 4 wires. Now I'm getting spark to all cylinders, as well as fuel (I heard each inj...
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2007 Chevrolet Express 3500 6.0L Misfire VIN: 1GAHG39U97
Hey this van came in with a p0354 code and a dead misfire on cylinder 4 we replaced the coil with a new delphi coil and reset light and test drove.van was fine drove perfect.now it just came back about 2 weeks later with the same code,thought maybe a bad coil ... Trouble codes: P0354 (Ignition Coil D Primary/Secondary Circuit Malfunction)
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2007 Chevrolet Impala LS 3.5L Mechanical VIN: 2G1WB58K07
Hey guys. have this impala in here for what we thought was a belt and pulley noise. here is what the noise sounds like. sound like almost like a light belt squeal noise/metallic againt metallic chaffing noise. took thebelt off. noise still there. found a bulle...
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1993 GMC C1500 Suburban SLE 5.7L Stall VIN: 1GKFK16K8P
Hey guys looking for some insight, I have a strange problem on this vehicle. after a few hours of cold soak when engine is started it dies when shifted to reverse but not when shifted to drive, vehicle always starts right back up in park or neutral. This vehic...
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2000 GMC Jimmy SLE 4.3L ignition VIN: 1GKDT13W3Y
good afternoon to all.so here we have this 2000 gmc jimmy ran great except intake was leaking l/s front (yea i know they dont do that too often).we had my coworker reseal the intake and all was good except a constant misfire.the misfire data on scan tool showe...
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2001 GMC Yukon Denali 6.0L Poor Idle Quality, Hesitation VIN: 1GKEK63U11
I also have a just answer GM Tech help me, but with the recommendation of the TAC module; I installed the new TAC module and the original PCM (not new, but the original one) and I still have DTC's: P1125 and P1286. Originally I had DTC's: P0171, P0300, P1276,... Trouble codes: P1125 (p1286-), P1286
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2008 GMC Acadia SLT 3.6L evap core VIN: 1GKER23758
Hey GM guys, We have a 08 GMC Acadia in the bay, it came in for no ac, we sucked out the system and the system was empty, our policy is to recharge the system with dye, and allow the customer to drive the car for a couple of weeks. It came back in and the eva...
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2003 Hummer H2 6.0L Chain & Sprockets VIN: 5GRGN23U63
I have an 03 H2 with Borg 4484 transfer case. Vehicle has rattle sound out of the t-case above 15mph, most noticable between 15-30mph. Replacing the chain made it a little quieter but rattle is still there. Any wise words from you guys out there?
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2002 Oldsmobile Alero GL 2.2L converter readiness VIN: 1G3NL52F62
GM Master Techs kids car won't pass WI emission test. Readiness test for cat. converter won't set. He's followed factory set procedure for readiness tests 3 times and GM Tech line can't figure it out. After disconnecting the battery all readiness tests set exc...
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1999 Saturn SW2 1.9L Stall VIN: 1G8ZK8273X
Vehicle came in on tow truck. Cust. States he backed out of his driveway and started down the street when he came to first stop sign, applied brakes and engine stalled. Restarted fine, but every time brake pedal is pushed, engine will now stall. Complaint veri... Trouble codes: P1583, P1583, P1640 (Quad driver module a)
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2007 Saturn Vue 3.5L No Start VIN: 5GZCZ63417
This Saturn was towed into our shop with the customer requesting a new starter. I went out to the car, and it cranked over, but would not fire. I connected a Tech 2 to the car, and there was no communication with the PCM. I pulled listed codes, along with a fe... Trouble codes: U2105 (Lost Communication with PCM), U2106 (Lost Communication with TCM), U1016 (Lost Class 2 Communication with PCM)
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Fixes & Summaries for GM
Fix/Summary Answers
1988 Chevrolet C1500 Silverado 5.7L Poor Idle Quality, Stall VIN: 2GCDC14K4J
well after all of your welcomed advise i took the tbi apart and on the bottom of the pressure return unit the little pin hole was missing and there was a giant glob of braising in there got a new metering cover and reinstalled vehicle idles like a 88 chevy sho...
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1999 Chevrolet Express 1500 5.0L Surge, Stall, MIL Lamp on VIN: 1GBFG15M2X
Thanks to all that replied. I did ck the voltage with a meter at the sensor and the ecm they read the same as scan tool .03 @ closed throttle but if disconnected the tps and jumped the 5 volt and signal the scan read 5 volt that should mean the ecm and wiring ... Trouble codes: P0122.
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2005 Chevrolet Malibu Maxx LS 3.5L unknown VIN: 1G1ZT62805
sorry for the delay on this one customer has not returned calls so its still sitting here.after a few phone calls and some research this one does need a new column per the serv bull.i also found that the number given under the service bull. has been superseede...
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2004 GMC Sierra 1500 SLE 5.3L RF speed sensor VIN: 2GTEK19T44
Thanks for the replies.The used speed sensor was no good.I installed a shim on the original RF speed sensor and problem is now gone.Also we phoned the GM dealer here and they say you cannot get a sensor seperate from the hub assembly,Maybe you guys can in the ...
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